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| Share Name | Share Symbol | Market | Type | Share ISIN | Share Description |
|---|---|---|---|---|---|
| Base Resources Limited | AQSE:BSE.GB | Aquis Stock Exchange | Ordinary Share | AU000000BSE5 |
| Price Change | % Change | Share Price | Bid Price | Offer Price | High Price | Low Price | Open Price | Shares Traded | Last Trade | |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.50 | 3.57% | 14.50 | 13.50 | 15.50 | 14.50 | 14.00 | 14.00 | 20,703 | 10:00:01 |
| Industry Sector | Turnover | Profit | EPS - Basic | PE Ratio | Market Cap |
|---|---|---|---|---|---|
| 0 | 0 | N/A | 0 |
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TIDMBSE
AIM and Media Release
8 May 2023
BASE RESOURCES LIMITED
Tanzanian exploration - Umba South Phase 1 drill results
Key Points
* Phase 1 reverse circulation drilling program completed at the Umba South
prospect in northern Tanzania, with 3,015m in 122 holes drilled.
* Assay results confirm the presence of rutile mineralisation, which averages
approximately 20% of the heavy mineral but is highly variable and can range
from 5 to 50% of the heavy mineral.
* Three primary geological domains were identified:
+ Soil/colluvial cover sequence (the primary exploration target) -
typically quite thin (1-2m) but can be locally up to 9m thick and has
demonstrated widespread rutile mineralisation.
+ Underlying saprolite material - variable thickness with sporadic rutile
mineralisation, and does not appear to be sufficiently weathered to
represent free-dig material from which rutile is readily liberated.
+ Bedrock - heavy mineral content is variable but typically high grade
(20%); however it is dominated by pyrite - a known deleterious element
for mineral sands processing, requiring dedicated tailings handling and
storage.
* Preliminary mineralogical assessment of drill samples is yet to be
completed, with the presence of rutile calculated based on XRF analysis of
the non-magnetic fraction of heavy mineral.
* While graphite is present in some drill samples, analysis suggests the
overall grade and distribution of mineralisation is not significant.
* A Phase 2 infill drilling program to assess the continuity of saprolite
mineralisation has been completed, with the results expected to be
available in the September 2023 quarter. These results will assist in
planning future exploration activity at Umba South and elsewhere along the
prospective geological zone once necessary approvals are obtained.
Base Resources Limited (ASX & AIM: BSE) (Base Resources or the Company) is
pleased to provide assay results from the first phase of drilling at its Umba
South Project (Umba South) in northern Tanzania (Phase 1).
Figures referenced in this release have been omitted. A full PDF version of
this release, including all figures, is available from the Company's website:
www.baseresources.com.au. A glossary of key terms used in this release is set
out at the end of this release.
Location of Phase 1 drilling and other exploration activities
Umba South is located near the junction of the Umba and Bombo Rivers in
northern Tanzania, approximately 75km west-south-west of the Company's Kwale
Operations in Kenya (refer to Figure 1). Exploration at Umba South was
designed to test the southern extremity of a prominent north-south trending
ridge of quartzite and gneiss that extends 35km north to the Kuranze region of
Kenya, where initial rock chip and soil sampling indicated the presence of
rutile. With the Company unable to carry out exploration activities in Kuranze
due to its prospecting licence applications for that area being on hold
following the Government of Kenya's ongoing moratorium on issuance of new
mineral rights, efforts were instead directed to the southern portion of the
ridge in Tanzania.
Exploration activity in Tanzania has so far been confined to areas south of the
Umba River, while the Company seeks to obtain the necessary approvals from
various government departments to explore in the Mkomazi Game Controlled Area
to the north which hosts the target ridge feature extending north to the Kenyan
border (refer to Figure 2).
Details about exploration activities
Exploration at Umba South targeted a high-grade metamorphic sequence within the
Mozambique Belt that comprises paragneiss (quartzo-feldspathic gneiss) and
sillimanite-kyanite(-garnet) schists. The sequence includes accessory minerals
pyrite, rutile, magnetite and graphite, with rutile the primary exploration
target. The focus of exploration is secondary rutile mineralisation associated
with alluvial and colluvial deposits eroding from the outcropping linear ridges
of pyritic quartz-feldspar gneiss, and primary rutile mineralisation within the
weathered saprolite material flanking the ridge feature that is sufficiently
weathered to represent free-dig material from which rutile can be readily
liberated.
In early 2022, mechanised auger sampling of the soil profile to approximately
1m depth on a 500m x 500m sample grid was undertaken across the broader
tenement area, with the best results (up to 5% rutile) reported from the flanks
of Kigwase Hill. In the June quarter of 2022, rockchip sampling of the
outcropping ridge confirmed the presence of rutile mineralisation, with grades
of up to 2.5% rutile reported from banded gneiss on Kigwase Hill. Selected
rockchip samples were sent for mineralogical analysis, and this confirmed the
presence of rutile together with pyrite (in fresh samples), Fe-oxides (in
weathered samples), magnetite and altered ilmenite.
A series of test pits were then completed to assess the soil profile, including
the nature of contact with the underlying saprolite. Mapping suggests that
red-brown soil is typically developed within rubbly colluvium overlying the
brown saprolite material. Pit depths ranged from 1.5m to 6.5m and samples of
material collected from the test pits were processed at the Kwale Operations
laboratory. Encouraging results were obtained from several samples with
potential HM products of rutile, leucoxene, altered ilmenite and magnetite
generated using conventional mineral sands processing techniques. One of the
test pits, pit 11, was investigated in detail and reported in-situ grades of
approximately 1% rutile, 1% leucoxene-altered ilmenite and 1% magnetite (refer
to Figure 2).
Following the encouraging results from the reconnaissance exploration, the
Phase 1 program was planned to obtain preliminary data regarding the
sub-surface geology and rutile mineralisation in the vicinity of Kigwase Hill.
A 400m North-South x 200m East-West reconnaissance grid was subsequently
drilled over Kigwase Hill where access was available, with the terrain and the
presence of small-scale gemstone tenure (known as primary mining licences)
restricting complete coverage (refer to Figure 3 for the drill hole collar
locations). A total of 122 holes were drilled for 3,015m using a RC drill rig
with a hammer bit, primarily due to lack of available aircore drill rigs and
concerns regarding the ability of aircore to penetrate both the rubbly
colluvium and the saprolite. As a result of the drill samples being
mechanically pulverised by the hammer bit, the slimes content of samples is
likely to be overstated, the oversize content is likely understated, and the
sand fraction likely contains mechanically generated sand together with natural
sand.
Results from Phase 1 drilling
The sample analysis for rutile has been completed on the sand fraction using
conventional mineral sands techniques (and back-calculated for in-situ grades).
There is the potential that rutile assays reported may not reflect true
in-situ grade and/or represent rutile that is readily amenable to conventional
mineral sands processing. Analysis of selected oversize fractions confirmed
significant rutile is present in the oversize. For holes TN092 to TN122, the
oversize fraction from the first stage of sample processing was crushed and
added to the sand fraction prior to HM analysis - such that these holes report
a "total" rutile grade (assuming no loss to the slimes fraction), whereas holes
TN001 to TN091 report only the rutile from the sand fraction and may therefore
only be a "partial" rutile grade.
Drill logging has identified three primary geological domains, as follows:
* Red-brown soil and colluvium with abundant gravel - typically 1-2m thick on
the eastern flank of Kigwase Hill and 2-4m thick on the western flank of
Kigwase Hill. Consistently mineralised and reports high levels of
ferruginous HM and significant TiO2 in the magnetic fraction. The HM is
enriched in the upper part of the profile. This domain is confirmed as a
viable exploration target for the province, but lacks the depth/thickness
at Umba South to have significant economic potential.
* Brown saprolite and saprock - weathered bedrock, subdivided into sandy and
clayey units. It is thought that this reflects the protolith (quartz rich
vs feldspar rich), rather than weathering intensity as there is limited
evidence for a well-developed chemical weathering profile with
remobilisation and volume reduction. Depth of weathering ranges down to
50m but is typically 30m distal to the ridge, and localised variability is
evident. The HM content is highly variable, and often variable HM magnetic
fractions both down and between holes. The saprolite is considered a
viable exploration target for the province, but at Umba South it appears to
lack the consistent intense weathering that concentrates rutile in the
upper profile and promotes free dig mining and simple processing.
* Grey bedrock - fresh gneiss, typically with abundant pyrite. Garnet gneiss
logged distal to the ridge, but logging has not attempted to classify the
bedrock lithology in detail. The HM content is variable but typically high
grade (20% HM) although dominated by pyrite. The bedrock is not
considered a viable exploration target for rutile due to cost and
complexity that would be introduced by hard rock mining and comminution,
and the negative impact of pyrite mineralisation on mineral processing
recoveries and tails storage - with results only reported for geological
interest.
Set out in the table below are notable hole intercepts. Due to the variability
of mineralisation between the geological domains - and potential mining,
mineral processing and tailings handling and storage implications - the rutile
mineralisation has been reported by domain and not by total hole intercepts.
For a list of all Phase 1 assay results, refer to Table 1 in Appendix 1.
Refer also to the cross sections in Figures 4 to 6 for a detailed rutile HM
analysis of each drill hole.
Notable drill hole intercepts
Colluvium Saprolite Bedrock
* TN042 - 8m at 1.39% * TN038 - 15m at 2.54% * TN015 - 4m at 3.48%
rutile from surface rutile from 18m rutile from 18m
* TN094 - 4m at 1.40% * TN011 - 10m at 2.55% * TN009 - 9m at 1.52%
rutile from surface rutile from 13m rutile from 10m
* TN095 - 4m at 1.24% * TN015 - 11m at 1.99% * TN056 - 6m at 2.11%
rutile from surface rutile from 7m rutile from 20m
* TN093 - 3m at 1.50% * TN051 - 17.5m at 1.15%
rutile from surface rutile from 0.5m
* TN039 - 7m at 2.02%
rutile from 6m
* TN056 - 6m at 2.02%
rutile from 13m
Graphite is a common accessory mineral within the paragneiss sequence being
explored and is routinely observed during panning and logging of the drill
samples. Approximately 320 samples from all geological domains were randomly
selected for analysis to assess the graphite mineralisation potential, with
around a third of samples reporting below detection and the remainder averaging
around 0.5% Total Graphitic Carbon including peak values up to 2.5% TGC. The
graphite mineralisation is not typically coincident with rutile mineralisation
and appears confined to specific stratigraphic units within the drilled
sequence. Preliminary assessment suggests that graphite does not represent a
viable exploration target due to unfavourable grade and distribution of
mineralisation but may have value as a potential co-product where it occurs
coincident with rutile.
For further details in respect of the results, refer to the Appendices to this
release, containing a table of all assay results (refer to Appendix 1) and
information provided for the purposes of Sections 1 and 2 of Table 1 of the
JORC Code (refer to Appendix 2).
Phase 2 infill drilling and further planned activities
With the Phase 1 program drill spacing unable to establish geological and grade
continuity of saprolite mineralisation, an infill drilling program was
undertaken in the first quarter of 2023, with 86 holes drilled for 2,128m (
Phase 2). Assay results from Phase 2 are expected to be available in the
September quarter of 2023, due to delays associated with the export of samples
from Tanzania to Kenya and prioritisation of operational assay requirements and
near-mine exploration assays at the Kwale Operations laboratory. The Phase 2
results should provide the Company with a more fulsome understanding of the
Umba South mineralisation, which will assist in planning future exploration
activity at Umba South and elsewhere along the prospective geological zone.
Other further work planned includes:
* Geostatistical assessment of data to establish grade continuity parameters.
* A program of shallow trenching to expose the saprolite and conduct rock
chip channel sampling, geological mapping, and collection of saprolite
samples to assess physical properties related to mining and processing
characteristics.
* Seek to progress approvals to allow exploration access to granted
prospecting licences north of the Umba River, particularly PL11686/2021,
and conduct reconnaissance exploration in this area to establish if broad
areas of rutile mineralisation are present within either colluvial/alluvial
material shedding from the prospective ridge line, or strongly weathered
saprolite associated with the targeted prospective zone.
Competent Person's Statement
The information in this release that relates to the Umba South exploration
results is based on, and fairly represents, information and supporting
documentation prepared by Mr. Ian Reudavey. Mr. Reudavey is a member of the
Australasian Institute of Geoscientists. Mr. Reudavey is employed by Base
Resources. Mr. Reudavey has sufficient experience that is relevant to the
style of mineralisation and type of deposit under consideration and to the
activity which he is undertaking to qualify as a Competent Person as defined in
the JORC Code and as Qualified Person for the purposes of the AIM Rules for
Companies. Mr. Reudavey has reviewed this release and consents to the
inclusion in this release of the Umba South exploration results and the
supporting information in the form and context in which the relevant
information appears.
Appendix 1
Table 1: Umba South Exploration Project drill hole table. All drill holes have
dip of -90 degrees and azimuth of 360 degrees (i.e. vertical).
Section Hole Easting Northing RL Survey Hole Unit Interval From To HM (%) Rut
N ID SRTM Depth (%)
9500978 TN001 474096 9500978 222 HHGPS 8 TOTAL 8 0 8 - NSR
TN002 473895 9500977 219 HHGPS 17 TOTAL 17 0 17 - NSR
TN003 473297 9500983 234 HHGPS 19 TOTAL 19 0 19 - NSR
TN004 473098 9500980 242 HHGPS 13 TOTAL 13 0 13 - NSR
9500578 TN005 473494 9500579 233 HHGPS 13 TOTAL 13 0 13 - NSR
TN006 473696 9500578 228 HHGPS 4 TOTAL 4 0 4 - NSR
TN007 473897 9500576 238 HHGPS 28 TOTAL 28 0 28 - NSR
TN008 474091 9500583 245 HHGPS 11 TOTAL 11 0 11 - NSR
TN009 474293 9500578 239 HHGPS 19 CS 1 0 1 5.9 0.75
SAP 9 1 10 5.3 0.89
BDR 9 10 19 22.3 1.52
TOTAL 19 0 19 13.4 1.18
TN117 475491 9500576 225.5 HHGPS 19 TOTAL 19 0 19 - NSR
TN118 475297 9500582 227.5 HHGPS 13 TOTAL 11 - NSR
TN119 475096 9500575 230 HHGPS 22 TOTAL 22 0 22 - NSR
TN120 474901 9500579 231.5 HHGPS 19 TOTAL 19 0 19 - NSR
9500178 TN010 474297 9500174 260.5 HHGPS 22 TOTAL 22 0 22 - NSR
TN011 474499 9500183 253.5 HHGPS 32 CS 1 0 1 7.2 1.32
SAP 12 1 13 - NSR
SAP 11 13 24 8.0 2.34
including SAP 10 13 23 8.6 2.55
BDR 8 24 32 - NSR
TOTAL 32 0 32 6.0 0.99
TN012 474701 9500175 246.5 HHGPS 22 TOTAL 22 0 22 - NSR
TN013 475095 9500180 239 HHGPS 28 TOTAL 28 0 28 - NSR
TN112 475298 9500179 234 HHGPS 40 TOTAL 40 0 40 - NSR
TN113 475497 9500186 231 HHGPS 20 TOTAL 20 0 20 - NSR
TN114 475696 9500180 224.5 HHGPS 18 TOTAL 18 0 18 - NSR
TN115 475885 9500183 218 HHGPS 19 TOTAL 19 0 19 - NSR
TN116 476095 9500179 213 HHGPS 11 TOTAL 11 0 11 - NSR
TN121 473698 9500171 251.5 HHGPS 19 CS 1 0 1 - NSR
SAP 9 1 10 - NSR
SAP 5 10 15 33.6 1.60
BDR 4 15 19 - NSR
TOTAL 19 0 19 29.5 0.73
TN122 473498 9500174 236.5 HHGPS 14 TOTAL 14 0 14 - NSR
9499778 TN014 475096 9499786 244 HHGPS 25 TOTAL 25 0 25 - NSR
TN015 474700 9499779 255 HHGPS 22 CS 1 0 1 - NSR
SAP 17 1 18 35.6 1.48
including SAP 11 7 18 8.9 1.99
BDR 4 18 22 34.4 3.48
TOTAL 22 0 22 19.6 1.78
TN016 474501 9499785 261 HHGPS 28 TOTAL 28 0 28 - NSR
TN017 474296 9499775 272 HHGPS 20 CS 1 0 1 9.4 1.00
SAP 12 1 13 4.7 0.78
including SAP 9 4 13 5.6 0.91
SAP 5 13 18 - NSR
BDR 2 18 20 - NSR
TOTAL 20 0 20 - NSR
9499378 TN018 474460 9499377 273.5 HHGPS 7 CS 1 0 1 5.9 0.98
SAP 2 1 3 11.9 1.00
BDR 4 3 7 15.8 0.77
TOTAL 7 0 7 14.4 0.86
TN019 474696 9499380 259.5 HHGPS 16 CS 1 0 1 56.3 1.87
SAP 11 1 12 13.9 0.77
including SAP 2 7 9 10.7 1.43
BDR 4 12 16 20.9 0.89
TOTAL 16 0 16 18.3 0.87
TN020 475097 9499384 244 HHGPS 32 TOTAL 32 0 32 - NSR
TN021 475301 9499370 238 HHGPS 26 CS 1 0 1 - NSR
SAP 21 1 22 8.0 0.25
including SAP 3 1 4 5.2 0.95
BDR 4 22 26 - NSR
TOTAL 26 0 26 - NSR
TN035 475499 9499375 227 HHGPS 19 TOTAL 19 0 19 - NSR
TN099 473491 9499373 253 HHGPS 38 CS 7 0 7 1.9 0.29
including CS 2 0 2 4.0 0.72
SAP 27 7 34 - NSR
BDR 4 34 38 - NSR
TOTAL 38 0 38 - NSR
TN108 473299 9499383 246.5 HHGPS 28 TOTAL 28 0 28 - NSR
TN109 473097 9499375 255.5 HHGPS 31 TOTAL 31 0 31 - NSR
TN110 473693 9499377 261 HHGPS 33 CS 8 0 8 4.7 0.78
including CS 3 0 3 7.2 1.41
SAP 21 8 29 - NSR
BDR 4 29 33 - NSR
TOTAL 33 0 33 - NSR
TN111 474088 9499373 275 HHGPS 20 CS 1 0 1 21.4 1.90
SAP 16 1 17 - NSR
BDR 3 17 20 - NSR
TOTAL 20 0 20 - NSR
9498978 TN022 475299 9498977 229 HHGPS 17 CS 6 0 6 - NSR
SAP 8 6 14 17.2 0.60
including SAP 4 6 10 16.5 0.82
BDR 3 14 17 - NSR
TOTAL 17 0 17 - NSR
TN023 475098 9498967 235 HHGPS 25 CS 5 0 5 7.1 0.67
including CS 3 0 3 6.9 0.84
SAP 17 5 22 - NSR
BDR 2 22 25 - NSR
TOTAL 25 0 25 - NSR
TN024 474890 9498980 248 HHGPS 24 CS 3 0 3 6.7 1.24
SAP 17 3 20 - NSR
BDR 4 20 24 - NSR
TOTAL 24 0 24 - NSR
TN025 474715 9498970 256.5 HHGPS 13 CS 1 0 1 4.5 0.93
SAP 8 1 9 4.7 0.53
including SAP 4 3 7 5.0 0.92
BDR 4 9 13 - NSR
TOTAL 13 0 13 - NSR
TN026 474501 9498979 275 HHGPS 3 CS 0.5 0 1 12.4 1.96
BDR 2.5 0.5 3 25.9 2.14
TOTAL 3 0 3 23.6 2.11
TN032 475495 9498978 225.5 HHGPS 16 TOTAL 16 0 16 - NSR
TN033 475696 9498976 223 HHGPS 14 TOTAL 14 0 14 - NSR
TN034 475832 9498981 225 HHGPS 19 TOTAL 19 0 19 - NSR
TN096 473495 9498973 264 HHGPS 44 CS 6 0 6 3.8 0.60
including CS 2 0 2 6.8 1.07
SAP 34 6 40 10.8 0.39
including SAP 4 6 10 5.5 0.83
including SAP 3 37 40 46.0 0.79
BDR 4 40 44 - NSR
TOTAL 44 0 44 - NSR
TN097 473690 9498974 269 HHGPS 40 CS 8 0 8 4.3 0.44
including CS 1 0 1 10.0 1.14
SAP 27 8 35 7.4 0.49
including SAP 10 10 20 5.8 0.89
BDR 5 35 40 35.2 1.63
TOTAL 40 0 40 - NSR
TN098 473899 9498982 271.5 HHGPS 51 CS 5 0 5 8.8 0.57
including CS 2 0 2 14.1 0.84
SAP 42 5 47 - NSR
BDR 4 47 51 - NSR
TOTAL 51 0 51 - NSR
TN100 473297 9498979 256.5 HHGPS 36 TOTAL 36 0 36 - NSR
TN101 473092 9498973 257 HHGPS 31 TOTAL 31 0 31 - NSR
TN102 472902 9498980 256.5 HHGPS 31 CS 5 0 5 1.0 0.25
including CS 1 0 1 2.7 0.86
SAP 22 5 27 - NSR
BDR 4 27 31 28.1 1.33
TOTAL 31 0 31 - NSR
9498578 TN027 474695 9498578 266 HHGPS 22 CS 1 0 1 7.5 0.71
SAP 17 1 18 - NSR
BDR 4 18 22 25.4 1.00
TOTAL 18 0 18 - NSR
TN028 474899 9498575 254 HHGPS 42 CS 1 0 1 7.1 1.18
SAP 4 1 42 - NSR
TOTAL 42 0 42 - NSR
TN029 475099 9498577 241 HHGPS 25 CS 2 0 2 6.9 0.58
including CS 1 0 1 9.8 0.97
SAP 21 1 22 - NSR
BDR 3 22 25 - NSR
TOTAL 25 0 25 - NSR
TN030 475297 9498577 229.5 HHGPS 16 CS 1 0 1 - NSR
SAP 10 1 11 - NSR
BDR 5 11 16 15.0 0.61
including BDR 2 11 13 18.2 1.10
TOTAL 16 0 16 14.2 0.51
TN031 475427 9498515 226 HHGPS 23 TOTAL 23 0 23 - NSR
TN092 473296 9498579 266.5 HHGPS 40 CS 7 0 7 - NSR
SAP 29 7 36 5.7 0.47
including SAP 10 19 29 11.6 1.03
BDR 4 36 40 - NSR
TOTAL 40 0 40 - NSR
TN093 473492 9498573 271 HHGPS 43 CS 7 0 7 4.5 0.81
including CS 3 0 3 7.3 1.50
SAP 33 7 40 - NSR
BDR 3 40 43 - NSR
TOTAL 43 0 43 - NSR
TN094 473696 9498579 276 HHGPS 36 CS 6 0 6 6.1 1.05
including CS 4 0 4 7.6 1.40
SAP 25 6 31 5.9 0.65
including SAP 5 6 11 3.4 0.70
including SAP 14 17 31 7.0 0.81
BDR 2 34 36 40.7 2.25
TOTAL 36 0 36 8.7 0.79
TN095 473897 9498579 286.5 HHGPS 48 CS 7 0 7 6.1 0.92
including CS 4 0 4 7.3 1.24
SAP 37 7 44 6.8 0.30
including SAP 9 13 22 18.0 0.78
BDR 4 44 48 - NSR
TOTAL 48 0 48 - NSR
TN103 472898 9498579 265 HHGPS 34 CS 7 0 7 3.0 0.47
including CS 3 0 3 3.0 0.89
SAP 23 7 30 - NSR
BDR 4 30 34 - NSR
TOTAL 34 0 34 - NSR
TN104 473092 9498576 265.5 HHGPS 31 TOTAL 31 0 31 - NSR
9498178 TN036 475096 9498177 242.5 HHGPS 25 CS 4 0 4 6.6 0.46
including CS 1 0 1 15.2 1.29
SAP 17 4 21 - NSR
BDR 4 21 25 - NSR
TOTAL 25 0 25 - NSR
TN037 475295 9498179 233.5 HHGPS 16 TOTAL 16 0 16 - NSR
TN038 474899 9498176 250 HHGPS 46 CS 1 0 1 - NSR
SAP 38 1 39 3.0 1.13
including SAP 15 18 33 5.3 2.54
BDR 7 39 46 - NSR
TOTAL 46 0 46 3.6 0.96
TN039 474699 9498179 265.5 HHGPS 21 CS 1 0 1 5.0 0.98
SAP 15 1 16 3.7 1.21
including SAP 7 6 13 5.4 2.02
BDR 5 16 21 - NSR
TOTAL 21 0 21 5.7 1.06
TN088 473490 9498175 275 HHGPS 49 CS 5 0 5 4.0 0.58
including CS 2 0 2 5.7 0.98
SAP 41 5 46 - NSR
BDR 3 46 49 - NSR
TOTAL 49 0 49 - NSR
TN089 473697 9498177 282 HHGPS 54 CS 9 0 9 5.4 0.76
including CS 3 0 3 7.8 1.06
SAP 39 9 48 - NSR
BDR 6 48 54 - NSR
TOTAL 54 0 54 - NSR
TN090 473893 9498179 289 HHGPS 16 CS 2 0 2 8.7 1.69
SAP 10 2 12 3.6 0.65
including SAP 6 2 8 4.3 0.82
BDR 4 12 16 23.2 1.28
TOTAL 16 0 16 9.1 0.94
TN091 474095 9498176 307 HHGPS 23 TOTAL 23 0 23 - NSR
TN105 473295 9498177 273 HHGPS 17 TOTAL 17 0 17 - NSR
TN106 473089 9498176 271 HHGPS 19 CS 1 0 1 11.2 0.87
SAP 15 1 16 - NSR
BDR 3 16 19 - NSR
TOTAL 19 0 19 - NSR
TN107 472897 9498177 271 HHGPS 34 TOTAL 34 0 34 - NSR
9497778 TN040 475094 9497776 242 HHGPS 30 TOTAL 30 0 30 - NSR
TN041 474895 9497776 254 HHGPS 40 CS 5 0 5 5.4 0.55
including CS 1 0 1 18.1 1.43
SAP 29 5 34 - NSR
BDR 6 34 40 29.1 0.79
TOTAL 40 0 40 - NSR
TN042 474695 9497779 262 HHGPS 25 CS 8 0 8 6.1 1.39
SAP 12 8 20 6.2 0.51
including SAP 3 8 11 3.1 0.85
BDR 5 20 25 15.9 0.71
TOTAL 25 0 25 8.1 0.83
TN043 474493 9497771 278 HHGPS 7 CS 4 0 4 13.5 0.66
including CS 3 0 3 16.8 0.83
BDR 3 4 7 20.4 1.29
TOTAL 7 0 7 16.4 0.93
TN044 475289 9497777 235 HHGPS 19 TOTAL 19 0 19 - NSR
TN081 473894 9497776 285 HHGPS 26 CS 2 0 2 6.0 0.92
SAP 20 2 22 12.9 0.47
including SAP 3 17 21 13.5 0.79
BDR 4 22 26 - NSR
TOTAL 26 0 26 - NSR
TN082 474093 9497777 300 HHGPS 19 CS 1 0 1 8.9 0.80
SAP 14 1 15 - NSR
BDR 4 15 19 - NSR
TOTAL 19 0 19 - NSR
TN083 473695 9497777 281.5 HHGPS 52 CS 2 0 2 6.1 1.42
SAP 46 2 48 - NSR
BDR 4 48 52 - NSR
TOTAL 52 0 52 - NSR
TN084 473494 9497780 276 HHGPS 57 CS 2 0 2 7.0 1.00
SAP 49 3 52 - NSR
BDR 5 52 57 - NSR
TOTAL 57 0 57 - NSR
TN085 473295 9497775 270.5 HHGPS 31 CS 2 0 2 - NSR
SAP 25 2 27 8.3 0.46
including SAP 7 16 23 12.9 0.83
BDR 4 27 31 - NSR
TOTAL 31 0 31 - NSR
TN086 473094 9497777 272 HHGPS 25 TOTAL 25 0 25 - NSR
TN087 472897 9497777 273 HHGPS 31 CS 1 0 1 5.3 1.00
SAP 26 1 27 - NSR
BDR 4 27 31 - NSR
TOTAL 31 0 31 - NSR
9497378 TN045 475098 9497377 236 HHGPS 22 TOTAL 22 0 22 - NSR
TN046 475293 9497373 230 HHGPS 15 TOTAL 15 0 15 - NSR
TN047 474896 9497377 244 HHGPS 16 CS 1 0 1 11.2 1.71
SAP 9 1 10 11.1 0.72
including SAP 5 1 6 10.2 0.81
BDR 6 10 16 33.3 1.32
TOTAL 16 0 16 19.4 1.01
TN048 475294 9497371 230 HHGPS 16 TOTAL 16 0 16 - NSR
TN049 474695 9497378 252 HHGPS 16 CS 1 0 1 6.6 1.73
SAP 8 1 9 4.8 1.09
BDR 7 9 16 20.4 1.00
TOTAL 16 0 16 11.7 1.09
TN050 474493 9497371 267 HHGPS 10 CS 1 0 1 9.4 1.22
SAP 5 1 6 6.7 1.35
BDR 4 6 10 19.0 1.43
TOTAL 10 0 10 11.9 1.37
TN075 473099 9497377 270 HHGPS 30 CS 4 0 4 1.5 0.35
including CS 1 0 1 2.4 0.74
SAP 22 4 26 - NSR
BDR 4 26 30 - NSR
TOTAL 30 0 30 - NSR
TN076 473297 9497376 271 HHGPS 31 TOTAL 31 0 31 - NSR
TN077 473495 9497377 270.5 HHGPS 41 CS 3 0 3 5.9 0.62
including CS 2 0 2 6.0 0.92
SAP 33 3 36 - NSR
BDR 5 36 41 - NSR
TOTAL 41 0 41 - NSR
TN078 473694 9497378 273.5 HHGPS 46 CS 9 0 9 9.6 0.62
including CS 2 0 2 9.6 2.06
SAP 33 9 42 - NSR
BDR 4 42 46 - NSR
TOTAL 46 0 46 - NSR
TN079 473892 9497382 281 HHGPS 33 CS 2 0 2 8.5 2.06
SAP 26 2 28 - NSR
BDR 5 28 33 - NSR
TOTAL 33 0 33 - NSR
TN080 474090 9497375 286 HHGPS 4 SAP 1 0 1 9.9 0.73
BDR 3 1 4 21.0 1.27
TOTAL 4 0 4 18.2 1.13
9496978 TN051 474494 9496976 254 HHGPS 23 CS 0.5 0 1 10.4 2.38
SAP 17.5 0.5 18 5.0 1.15
BDR 5 18 23 26.7 1.85
TOTAL 23 0 23 9.9 1.35
TN052 474693 9496976 243.5 HHGPS 16 CS 1 0 1 9.1 1.49
SAP 10 1 11 - NSR
BDR 5 11 16 - NSR
TOTAL 16 0 16 - NSR
TN053 474867 9496978 233 HHGPS 13 TOTAL 13 0 13 - NSR
TN054 475099 9496983 232 HHGPS 13 TOTAL 13 0 13 - NSR
TN055 474290 9496973 265 HHGPS 13 CS 1 0 1 7.2 2.19
SAP 8 1 9 6.7 0.84
BDR 4 9 13 20.8 1.04
TOTAL 13 0 13 11.1 1.01
TN056 474090 9496978 264 HHGPS 26 CS 1 0 1 7.6 1.52
SAP 19 1 20 6.4 0.94
including SAP 6 13 19 14.2 2.02
BDR 6 20 26 30.2 2.11
TOTAL 26 0 26 12.0 1.23
TN057 473897 9496976 265 HHGPS 27 CS 2 0 2 - NSR
SAP 20 2 22 11.0 0.45
including SAP 3 14 17 15.2 1.05
BDR 5 22 27 - NSR
TOTAL 27 0 27 - NSR
TN058 473697 9496978 261 HHGPS 30 CS 4 0 4 6.2 0.94
including CS 2 0 2 8.7 1.60
SAP 21 4 25 - NSR
BDR 5 25 30 - NSR
TOTAL 30 0 30 - NSR
TN059 473496 9496975 258 HHGPS 33 TOTAL 33 0 33 - NSR
TN060 473296 9496976 261 HHGPS 34 TOTAL 34 0 34 - NSR
TN073 473095 9496978 263 HHGPS 32 TOTAL 32 0 32 - NSR
TN074 472899 9496976 263 HHGPS 30 TOTAL 30 0 30 - NSR
9496578 TN061 473496 9496575 253.5 HHGPS 25 TOTAL 25 0 25 - NSR
TN062 473698 9496572 254 HHGPS 25 CS 4 0 4 3.6 0.60
including CS 2 0 2 5.3 1.12
SAP 16 4 20 - NSR
BDR 5 20 25 - NSR
TOTAL 25 0 25 - NSR
TN063 473891 9496579 253.5 HHGPS 22 CS 2 0 2 - NSR
SAP 15 2 17 8.4 0.38
including SAP 2 15 17 17.2 1.31
BDR 5 17 22 17.7 1.50
including BDR 3 19 22 20.6 2.13
TOTAL 22 0 22 - NSR
TN064 474093 9496571 249 HHGPS 25 CS 2 0 2 11.5 0.92
SAP 19 2 21 - NSR
BDR 4 21 25 - NSR
TOTAL 25 0 25 - NSR
TN065 474295 9496576 251 HHGPS 19 CS 2 0 2 12.5 1.00
SAP 13 2 15 6.0 0.53
including SAP 2 2 4 9.7 0.74
BDR 4 15 19 24.7 1.09
TOTAL 19 0 19 11.4 0.71
TN066 474495 9496573 244.5 HHGPS 22 CS 2 0 2 9.4 1.18
SAP 15 2 17 - NSR
BDR 5 17 22 - NSR
TOTAL 22 0 22 - NSR
TN067 474700 9496575 238 HHGPS 20 TOTAL 20 0 20 - NSR
TN068 474833 9496578 233 HHGPS 11 TOTAL 11 0 11 - NSR
9496178 TN069 474698 9496173 235 HHGPS 16 TOTAL 16 0 16 - NSR
TN070 474497 9496176 243 HHGPS 15 TOTAL 15 0 15 - NSR
TN071 474300 9496182 245 HHGPS 22 TOTAL 22 0 22 - NSR
TN072 474095 9496179 243 HHGPS 22 TOTAL 22 0 22 - NSR
Appendix 2
JORC Code, 2012 Edition
Section 1 Sampling Techniques and Data
Criteria Explanation Comment
Sampling Nature and quality of sampling Reverse circulation hammer drilling
techniques (e.g. cut channels, random chips, was used to obtain 1m samples from
or specific specialised industry which approximately 2.0 kg was riffle
standard measurement tools split to produce a sub-sample for HM
appropriate to the minerals under analysis utilizing heavy liquid
investigation, such as down hole separation, magnetic separation and
gamma sondes, or handheld XRF XRF assay.
instruments, etc). These examples
should not be taken as limiting All holes were sampled over
the broad meaning of sampling. consistent 1m intervals.
Include reference to measures All holes were drilled using a
taken to ensure sample reverse circulation method to collect
representivity and the 25% of the sample via cyclone
appropriate calibration of any separation of drill returns with a
measurement tools or systems 4-way splitter attachment at the base
used. of the cyclone discharging into a
calico bag.
Aspects of the determination of
mineralisation that are Material Samples are collected from alternate
to the Public Report. In cases discharge chutes of the splitter, and
where 'industry standard' work assessment of duplicate samples
has been done this would be collected at routine intervals show
relatively simple (e.g. 'reverse that no bias is evident from the
circulation drilling was used to cyclone splitter.
obtain 1m samples from which 3kg
was pulverised to produce a 30g Samples were analysed by mineral
charge for fire assay'). In other sands industry standard techniques of
cases more explanation may be screening, desliming and heavy liquid
required, such as where there is separation using SPT (sodium
coarse gold that has inherent polytungstate: SG = 2.85g/cm3). XRF
sampling problems. Unusual analysis of HM magnetic fractions was
commodities or mineralisation used to define the VHM content.
types (e.g. submarine nodules)
may warrant disclosure of
detailed information.
Drilling Drill type (e.g. core, reverse All drilling was undertaken using a
techniques circulation, open-hole hammer, Smith Capital 10R3H track mounted
rotary air blast, auger, Bangka, reverse circulation drill rig
sonic, etc) and details (e.g. operated by Amazon Mineworks
core diameter, triple or standard Tanzania.
tube, depth of diamond tails,
face-sampling bit or other type, All holes were drilled vertically,
whether core is oriented and if with the drill rig levelled using
so, by what method, etc). hydraulic jacks.
Drill rod diameter is 41/2" with 3m
rods fitted with a face sampling 53/
8" button hammer bit.
Drill sample Method of recording and assessing Sample size is monitored by the rig
recovery core and chip sample recoveries geologist and logged quantitatively
and results assessed. as either good, moderate or poor,
with good meaning not contaminated
Measures taken to maximise sample and appropriate sample size
recovery and ensure (recovery), moderate meaning not
representative nature of the contaminated, but sample over or
samples. under sized, and poor meaning
contaminated or grossly over/
Whether a relationship exists undersized. Samples from the Phase 1
between sample recovery and grade drilling at Umba South were logged as
and whether sample bias may have 80% dry good, 16% dry poor and 3%
occurred due to preferential loss moist good.
/gain of fine/coarse material.
The drill rig uses a face sampling
pneumatic hammer bit and operates at
air pressures of 24 Bar and low
rotation speeds (45-65 rpm) to
maximize sample recovery.
There is no correlation evident
between sample recovery and grade,
resulting in no sample bias.
Logging Whether core and chip samples All samples were visually checked and
have been geologically and logged on site by the rig geologist
geotechnically logged to a level and logged for lithotype, grain size,
of detail to support appropriate colour, hardness, and moisture
Mineral Resource estimation, content.
mining studies and metallurgical
studies. A small subsample was taken for each
drill interval and manually panned
Whether logging is qualitative or for estimation of slimes and HM
quantitative in nature. Core (or content.
costean, channel, etc)
photography. Any relevant comments e.g., water
table, gangue HM components and
The total length and percentage stratigraphic markers were included
of the relevant intersections to aid in the subsequent geological
logged. modelling.
The use of a pneumatic hammer bit is
believed to have modified the grain
size characteristics of the sample,
with potential overstatement of
slimes content and understatement of
the oversize fraction. The drilling
technique makes logging and
assessment of the geotechnical
parameters of the material
unreliable.
Sub-sampling If core, whether cut or sawn and An approximate 25% split of the
techniques whether quarter, half or all core drilled sample interval is collected
and sample taken. from the drill cyclone. The calico
preparation sample bags from site were air dried
If non-core, whether riffled, before sub-sampling. Any material
tube sampled, rotary split, etc that was bound together by clay was
and whether sampled wet or dry. manually attritioned so it would pass
through the splitter.
For all sample types, the nature,
quality and appropriateness of The material was split using a 25 mm
the sample preparation technique. three tier riffle splitter to produce
a sub-sample for assay submission of
Quality control procedures approximately 2.0 kg in a small
adopted for all sub-sampling calico sample bag.
stages to maximise representivity
of samples. For one sample in every 20, an
additional sample was collected from
Measures taken to ensure that the an alternate discharge chute on the
sampling is representative of the cyclone mounted splitter for QAQC
in-situ material collected, purposes.
including for instance results
for field duplicate/second-half Results of field duplicates confirm
sampling. the sampling process is generating
representative results.
Whether sample sizes are
appropriate to the grain size of The sample preparation technique,
the material being sampled. sample size and riffle aperture used
is considered appropriate for mineral
sands analysis.
Quality of The nature, quality and Samples were analysed by conventional
assay data appropriateness of the assaying mineral sands techniques of
and and laboratory procedures used screening, desliming and heavy liquid
laboratory and whether the technique is separation using SPT (sodium
tests considered partial or total. polytungstate: SG = 2.85g/cm3). XRF
analysis of HM magnetic fractions was
For geophysical tools, used to define the VHM content.
spectrometers, handheld XRF
instruments, etc, the parameters All 3,015 drill samples were
used in determining the analysis submitted to the Base Titanium
including instrument make and laboratory at the Kwale Operations in
model, reading times, Kenya.
calibrations factors applied and
their derivation, etc. The separation of HM was by sodium
polytungstate (SPT) at density 2.85 g
Nature of quality control /cc.
procedures adopted (e.g.
standards, blanks, duplicates, All samples were:
external laboratory checks) and (i) Dried, weighed.
whether acceptable levels of (ii) Sample rotary split to produce
accuracy (i.e. lack of bias) and 400 g sample.
precision have been established. Sample wet screened using 45 µm and 1
mm sieves, to generate oversize and
sand fractions, with slimes lost
during screening and calculated by
difference.
(iii) For samples UD2121 to UD3015
the oversize fraction was crushed
until minimal oversize was present,
with heavy liquid separation being
undertaken on the combined mass of as
received sand fraction and lab
generated sand fraction.
(iv) SPT heavy liquid separation of
sand fraction to generate a HM
fraction.
(v) HM fraction subject to magnetic
separation on a roll magnet to
generate a high susceptibility (HS)
fraction, magnetic (Mag) fraction and
non-magnetic (NonMag) fraction.
(vi) XRF analysis of Mag fractions,
with rutile (assumed 95% TiO2)
calculated from TiO2 assay of NonMag
by dividing by 0.95.
(vii) NonMag fraction subject to
Nitric acid dissolution to determine
pyrite content, with rutile grade
adjusted to reflect XRF
normalisation.
Select float fraction samples were
despatched to BV Centurion SA for
analysis of TGC, with assay grades
adjusted to reflect losses to slimes
and oversize.
Various quality control samples were
submitted routinely to assure assay
quality. A total of 150 duplicate
field samples, 301 lab duplicate
sample preparation samples, and an
unspecified number of internal
laboratory standards, repeats and
blanks have been assayed at Kwale
Operations' site laboratory.
Verification The verification of significant Drilling, logging and sampling
of sampling intersections by either undertaken by contract geologists
and assaying independent or alternative following on-site training by Base
company personnel. Titanium's Exploration Manager.
The use of twinned holes. Twinned holes have been completed but
assay results are not yet available
Documentation of primary data, for comparison.
data entry procedures, data
verification, data storage Drill hole logging and site sample
(physical and electronic) data is collected electronically and
protocols. regularly emailed to the exploration
office in Kwale, Kenya. Assay data
Discuss any adjustment to assay is captured electronically via LIMS
data. and merged with logging and sample
data in Datashed.
No adjustment to assay data has been
made - but it is noted that rutile
grades from holes TN001 to TN091
reflect rutile in the sand fraction
only, while for holes TN092 to TN122
the rutile grades reflect the
combined sand and (crushed) oversize
fraction.
Location of Accuracy and quality of surveys Drill hole collars were surveyed
data points used to locate drill holes using handheld GPS.
(collar and down-hole surveys),
trenches, mine workings and other All drill holes are vertical, down
locations used in Mineral hole surveys were deemed unnecessary.
Resource estimation.
Grid system used throughout the
Specification of the grid system program is UTM, Zone 37S, ARC60
used. datum.
Quality and adequacy of Topographic data was derived from a
topographic control. DTM generated from SRTM 30m spaced
point data and all drill collars were
levelled to the SRTM topographic
surface for consistency. The
topographic control is considered
adequate for reporting of exploration
results but will require improved
definition for any future resource
estimation.
Data spacing Data spacing for reporting of The drilling program that forms the
and Exploration Results. basis of this release is based upon
distribution 200m hole spacing along E-W oriented
Whether the data spacing and lines with 400m between lines. The
distribution is sufficient to drill program was designed to test a
establish the degree of prominent N-S trending ridge of
geological and grade continuity quartzite and gneiss that reported
appropriate for the Mineral anomalous rock chip and soil
Resource and Ore Reserve geochemistry.
estimation procedure(s) and
classifications applied. The current data spacing, and
distribution is likely not sufficient
Whether sample compositing has to establish geological and grade
been applied. continuity and additional work
programs are being implemented to
better understand the geological
controls on mineralisation.
No sample compositing has been
applied.
Orientation Whether the orientation of All drill holes were drilled
of data in sampling achieves unbiased vertically. The mineralisation
relation to sampling of possible structures drilled comprises a sub-horizontal
geological and the extent to which this is soil and weathered saprolite profile,
structure known, considering the deposit and primary bedrock. The geological
type. structure of the bedrock comprises 40
° to 50° E dipping metamorphic
If the relationship between the fabric, and it is likely this is also
drilling orientation and the evident in the saprolite as deep /
orientation of key mineralised intense weathering is not evident.
structures is considered to have
introduced a sampling bias, this Drill lines were drilled north -
should be assessed and reported south, east - west within 10 degrees
if material. of the topographic ridgeline that
reflects the strike of the
metamorphic fabric.
A bias to sampling has likely been
introduced via vertical drilling of a
moderately dipping geological unit,
but as the geological controls on
mineralisation are not fully
understood at this time - the
potential bias is still under
assessment. Reported mineralisation
widths in the bedrock and likely
saprolite will be significantly
greater (up to 1.5x) than true width.
Sample The measures taken to ensure All samples from the drilling rig
security sample security. were transported to the Umba South
exploration camp daily, where they
are stored in a shed with a secure
compound. Once sample preparation is
completed, the sub-samples for assay
are placed in drums for transport to
both Tanga (for government
assessment) and ultimately the Kwale
Operations in Kenya.
The samples bags were labelled by
both marker and paper tags with a
unique sample number.
Audits or The results of any audits or No external audits of the sampling
reviews reviews of sampling techniques techniques and data have been carried
and data. out, but the techniques and data have
been reviewed by experienced Base
Titanium and Base Resources
personnel.
The sample analytical procedure has
undergone several internal reviews
with modifications occurring as
required. The results of
mineralogical analysis are awaited to
further review the analytical
procedure.
Section 2 Reporting of Exploration Results
Criteria Explanation Comment
Mineral Type, reference name/number, The Umba South project is located
tenement and location and ownership within Prospecting Licences PL 11686
land tenure including agreements or /2021, PL 11687/2021, and PL 19524/
status material issues with third 2022, which are held by BET Two Ltd,
parties such as joint ventures, Base Resources' wholly owned,
partnerships, overriding Tanzanian subsidiary.
royalties, native title
interests, historical sites, Several Primary Mining Licences
wilderness or national park and (PMLs) for gemstones, up to 10ha in
environmental settings. size, occur at Umba South and BET
Two has entered into access
The security of the tenure held agreements with the PML holders
at the time of reporting along allowing exploration drilling
with any known impediments to activity to be carried out in areas
obtaining a licence to operate of interest.
in the area.
At the time of reporting, the BET
Two tenure is in compliance with all
requirements and there are no known
impediments to obtaining a licence
to operate in the area.
Exploration Acknowledgment and appraisal of No previous exploration for rutile
done by other exploration by other parties. is believed to have been undertaken
parties in the Umba South area, with
historical prospecting limited to
reconnaissance sampling for
gemstones.
Geology Deposit type, geological The project area is underlain by
setting and style of part of the Mozambique Belt - a
mineralisation. major N-S trending geological
structure extending along the
Eastern Coast of Africa. High-grade
metamorphic rocks in the project
area occur as prominent N-S trending
ridgelines, with rutile being a
common accessory mineral together
with reported occurrences of
graphite, pyrite, sillimanite,
kyanite, garnet and gemstones
(primarily tourmaline).
The primary focus of exploration is
eluvial / alluvial HM (rutile)
deposits sourced from the
mineralised ridges, and / or
saprolitic deposits enriched in
rutile that are sufficiently
weathered to represent free-dig
material from which rutile is
readily liberated.
The eluvial profile developed at
Umba South is typically quite thin
(1-2m) but can locally be up to 9m
thick. Rutile mineralisation is
widespread throughout this unit
proximal to the ridgeline at Umba
South and is present as HM grains
within gravelly clayey sand and
soil.
The saprolite present at Umba South
has variable depth and the
weathering profile is not well
developed. Rutile mineralisation
occurs sporadically throughout this
unit and appears related to specific
lithological zones that are enriched
in rutile. The nature of the
saprolite rutile mineralisation has
not been established at this time.
Drill hole A summary of all information BET Two has conducted two drilling
Information material to the understanding programs to date, with this release
of the exploration results relating to the Phase 1
including a tabulation of the reconnaissance drilling for which
following information for all assay results are complete.
Material drill holes:
A total of 122 holes for 3,015m with
* easting and northing of the an average depth of 25m were
drill hole collar completed for Phase 1.
* elevation or RL (Reduced
Level - elevation above sea All holes were drilled vertically.
level in metres) of the
drill hole collar See drill hole location plan -
* dip and azimuth of the hole Figure 2.
* down hole length and
interception depth Drill hole collars and significant
* hole length. assays are presented in Table 1 in
Appendix 1.
If the exclusion of this
information is justified on the
basis that the information is
not Material and this exclusion
does not detract from the
understanding of the report,
the Competent Person should
clearly explain why this is the
case.
Data In reporting Exploration Exploration results are reported as
aggregation Results, weighting averaging length-weighted average grades of
methods techniques, maximum and/or rutile mineralisation using a
minimum grade truncations (e.g. nominal 0.7% rutile cut-off grade.
cutting of high grades) and No top-cutting has been applied.
cut-off grades are usually Grades reflect in-situ rutile
Material and should be stated. content based upon analysis of the
sand fraction.
Where aggregate intercepts
incorporate short lengths of Aggregate downhole significant
high grade results and longer intercepts were calculated using the
lengths of low grade results, following parameters:
the procedure used for such
aggregation should be stated * Minimum 3m interval of
and some typical examples of mineralisation.
such aggregations should be * Maximum 2m interval of internal
shown in detail. "low grade" allowed provided the
aggregate grade exceeds 0.7%,
The assumptions used for any with multiple "low-grade"
reporting of metal equivalent intervals permitted.
values should be clearly
stated. For clarity the aggregate downhole
intercept is also tabulated by
geological domain.
Relationship These relationships are The mineralised eluvial soil horizon
between particularly important in the forms a relatively flat lying
mineralisation reporting of Exploration blanket and is intersected by
widths and Results. vertical holes; hence the intercept
intercept length is approximately equivalent
lengths If the geometry of the to the mineralization thickness.
mineralisation with respect to
the drill hole angle is known, The mineralised saprolite material
its nature should be reported. likely has rutile mineralisation
reflecting the primary metamorphic
If it is not known and only the fabric, as the weathering profile is
down hole lengths are reported, relatively shallow and weak with
there should be a clear minimal mass reduction and chemical
statement to this effect (e.g. mobilisation. The metamorphic
'down hole length, true width fabric dips 40° - 50° to the east
not known'). and this would result in down hole
mineralisation lengths being up to
1.5 times true width.
The mineralised bedrock has rutile
mineralisation aligned with the
primary metamorphic fabric (as
above) and this would result in down
hole mineralisation lengths being up
to 1.5 times true width.
Diagrams Appropriate maps and sections Plan of Drill hole locations see
(with scales) and tabulations Figure 2 and representative drill
of intercepts should be hole cross sections see Figures 4 to
included for any significant 6.
discovery being reported These
should include, but not be Tabulation of drill intercepts see
limited to a plan view of drill Table 1 of Appendix 1.
hole collar locations and
appropriate sectional views. Due to the limited understanding of
geological controls on
mineralisation only simplified
representative cross-sections are
reported at this time.
Balanced Where comprehensive reporting All drill hole collar locations are
reporting of all Exploration Results is tabulated, including those with no
not practicable, representative significant assays.
reporting of both low and high
grades and/or widths should be
practiced to avoid misleading
reporting of Exploration
Results.
Other Other exploration data, if Metallurgical testwork on samples
substantive meaningful and material, should collected from shallow test pits
exploration be reported including (but not within the soil /eluvial domain
data limited to): geological highlighted the presence of altered
observations; geophysical ilmenite (averaging 65% TiO2)
survey results; geochemical within the heavy mineral assemblage.
survey results; bulk samples - Significant TiO2 can be present
size and method of treatment; within the Mags fraction of the HM
metallurgical test results; from rutile mineralised zones, but
bulk density, groundwater, in the absence of mineralogical data
geotechnical and rock and a more refined analytical
characteristics; potential technique it has not been possible
deleterious or contaminating to quantify this TiO2 as an ilmenite
substances. that has economic potential.
The geotechnical characteristics of
the saprolite material being drilled
is not able to be reliably
determined given the RC hammer
drilling method. This is
potentially significant as the
economic potential of the rutile
mineralisation within the saprolite
will be partially determined by the
mining method (cost) and the
processing required to generate
rutile product (e.g. liberation of
rutile grains, efficient recovery
processes). There is a risk that
the saprolite may require drill and
blast hardrock mining methods (at
high cost) and that rutile
mineralisation may require
comminution (at high cost) to
achieve liberation and amenability
to conventional mineral sands
processing methods. If this were
the case a substantially higher
economic cut-off grade would need to
be applied.
Similarly, the bedrock
mineralisation will necessitate hard
rock mining methods and comminution
to achieve rutile liberation - and
there is no certainty that
metallurgical testwork will deliver
economic outcomes.
The bedrock mineralisation also
contains a significant amount of
pyrite - a known deleterious element
for mineral sands processing,
together with its unfavourable
environmental impact necessitating
dedicated tailings handling and
storage.
Further work The nature and scale of planned Once necessary approvals have been
further work (e.g. tests for obtained for the Game Controlled
lateral extensions or depth Area north of the Umba River, future
extensions or large-scale work will consist of reconnaissance
step-out drilling). exploration to establish if broad
Diagrams clearly highlighting areas of rutile mineralisation are
the areas of possible present within either colluvial/
extensions, including the main alluvial material shedding from the
geological interpretations and prospective ridge line, or strongly
future drilling areas, provided weathered saprolite associated with
this information is not the targeted prospective zone.
commercially sensitive.
Samples from Umba South have been
sent for detailed mineralogical
analysis to assist with geological
interpretation, validation of
analytical flowsheet, metallurgical
assessment, and economic potential.
A program of trenching or
core-drilling at Umba South would
provide samples of the saprolite
that will allow geotechnical
assessment and detailed mapping /
logging of the geology and
mineralisation.
Glossary
Base Base Resources' wholly-owned Kenyan subsidiary, Base Titanium Limited.
Titanium
BDR Bedrock geological domain.
BET Two Base Resources' wholly-owned Tanzanian subsidiary, BET Two Limited.
Collar Location of a drill hole.
CS Colluvium and Soil geological domain.
DTM Digital terrain model.
Easting A figure representing eastward distance on a map.
GPS Global positioning system.
HHGPS Handheld global positioning system.
HM Heavy mineral.
JORC Code The Australasian Code for Reporting of Exploration Results, Mineral
Resources and Ore Reserves, as published by the Joint Ore Reserves
Committee of The Australasian Institute of Mining and Metallurgy,
Australian Institute of Geoscientists and Minerals Council of
Australia.
Mag Magnetic fraction of HM.
Non-mag Non magnetic fraction of HM.
Northing A figure representing northward distance on a map.
NSR No significant result.
RC Reverse circulation.
SAP Saprolite (weathered bedrock) geological domain.
SPT Sodium polytungstate solution used for heavy liquid separation.
SRTM Shuttle radar topography mission flown by space shuttle Endeavour to
acquire radar data used to create global land elevation dataset.
TGC Total graphitic carbon.
TiO2 Titanium dioxide.
UD Umba drilling sample prefix.
UTM Universal Transverse Mercator is a plane coordinate grid system.
VHM Valuable heavy mineral.
XRF A spectroscopic method used to determine the chemical composition of a
material through analysis of secondary X-ray emissions, generated by
excitation of a sample with primary X-rays that are characteristic of
a particular element.
ENDS.
For further information contact:
Australian Media Relations UK Media Relations
Citadel Magnus Tavistock Communications
Cameron Gilenko and Michael Weir Jos Simson and Gareth Tredway
Tel: +61 8 6160 4900 Tel: +44 207 920 3150
About Base Resources
Base Resources is an Australian based, African focused, mineral sands producer
and developer with a track record of project delivery and operational
performance. The Company operates the established Kwale Operations in Kenya,
is developing the Toliara Project in Madagascar and is conducting exploration
in Tanzania. Base Resources is an ASX and AIM listed company. Further details
about Base Resources are available at www.baseresources.com.au.
PRINCIPAL & REGISTERED OFFICE
Level 3, 46 Colin Street
West Perth, Western Australia, 6005
Email: info@baseresources.com.au
Phone: +61 8 9413 7400
Fax: +61 8 9322 8912
NOMINATED ADVISOR
RFC Ambrian Limited
Stephen Allen
Phone: +61 8 9480 2500
JOINT BROKER
Berenberg
Matthew Armitt / Detlir Elezi
Phone: +44 20 3207 7800
JOINT BROKER
Canaccord Genuity
Raj Khatri / James Asensio / Patrick Dolaghan
Phone: +44 20 7523 8000
END
(END) Dow Jones Newswires
May 09, 2023 02:00 ET (06:00 GMT)
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