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IVN Ivanhoe Mines Ltd

20.52
0.80 (4.06%)
04 Oct 2024 - Closed
Delayed by 15 minutes
Share Name Share Symbol Market Type
Ivanhoe Mines Ltd TSX:IVN Toronto Common Stock
  Price Change % Change Share Price Bid Price Offer Price High Price Low Price Open Price Shares Traded Last Trade
  0.80 4.06% 20.52 20.47 20.54 20.91 19.78 19.87 1,603,510 21:12:16

Ivanhoe Mines' Drilling Program Extends Depths of Rich Zinc and Copper Zones at the Kipushi Mine in D.R. Congo

15/04/2014 12:30pm

Marketwired Canada


Robert Friedland, Executive Chairman of Ivanhoe Mines (TSX:IVN), and Lars-Eric
Johansson, Chief Executive Officer, announced today that early results from the
company's underground diamond-drilling program at the Kipushi
copper-zinc-germanium-lead and precious-metals mine have established significant
down-dip extensions of the unmined high-grade Big Zinc Discovery. 


Ivanhoe's drilling has extended the Big Zinc mineralization to a depth of
approximately 1,700 metres below surface, which is an additional 200 metres
deeper than the previous lowest level of the Big Zinc Discovery's historical
Measured and Indicated Resources as they were recorded 20 years ago, before the
Kipushi Mine was placed on care and maintenance by its former owner in 1993. 


"Based on the initial indications we have seen to date, this has been a very
encouraging start to our long anticipated exploration of the principal, known
mineralized assets at Kipushi," said Mr. Friedland. 


The drilling has been designed to confirm and update Kipushi's estimated
historical Resources and to further expand the mineralization on strike and at
depth.


Highlights from the first holes of Ivanhoe's current drilling program 



--  Drilling to date has been conducted from 1,220-metre level and from a
    drill station at the 1,252-metre level. Three holes have been drilled on
    the southern end of the Big Zinc, testing down-plunge continuity and
    extensions to the south. Details of holes KPU001, KPU002 and KPU003 are
    shown in the accompanying cross-section diagrams. 

--  Hole KPU001, drilled at -67 degrees on a bearing of 298 degrees, drilled
    through massive sphalerite and dolomite from 46.4 metres to 399.36
    metres. This approximately 353-metre intersection extends to a depth
    below surface of 1,550 metres. 

--  Hole KPU002, drilled on the same azimuth as KPU001 but at an inclination
    of -61 degrees, also intersected the Big Zinc from 32.05 metres to 372.4
    metres (total intersection length of approximately 340 metres) to a
    depth of 1,590 metres below surface. 

--  Hole KPU003, drilled on a bearing of 273 degrees, aimed to test the
    southern plunge of the Big Zinc. This hole successfully intersected
    massive sphalerite and dolomite from 31 metres to a drilled depth of 550
    metres down-hole, or 1,700 metres below surface. Importantly, the hole
    also intersected significant copper mineralization (chalcopyrite and
    bornite) from 194.4 metres to 225 metres down hole and a breccia-hosted
    zone of copper mineralization (chalcopyrite) from 439 metres to 461.6
    metres. 

--  Drill testing of the Serie Recurrente copper-mineralized zone on the
    northern limb of the Kipushi mineralized system also is ongoing. The
    first hole, KPU004, drilled at an angle of -45 degrees on a bearing of
    005 degrees, successfully intersected a copper-rich mineralized zone
    from 56.5 metres to 71.5 metres down-hole, including zones of massive
    chalcopyrite from 58.4 to 59.4 metres and from 60.0 to 62.1 metres. 



Ivanhoe cautions that the presence of mineralization observed in the drilling to
date at Kipushi is not presented to confirm historical assay results. It
confirms only the presence of mineralization similar in style to that observed
in historical holes drilled by state-owned mining company Gecamines (La Generale
des Carrieres et des Mines). Assays for copper, zinc, lead, germanium and
precious metals are pending for the four initial Ivanhoe Mines drill holes
reviewed in this release. 


Two drill rigs are in operation; a third rig has arrived at the site and soon
will start drilling. Dewatering at the mine in ongoing and access to the
important 1,272-metre-level hanging wall drift is expected this month, which
will allow Ivanhoe to begin the drill program's phase of twinning the historical
drilling.


"Drilling at Kipushi continues to identify thick intersections of strong
sphalerite and chalcopyrite mineralization" said Mr. Johansson. 


"We will continue to carry out more extensional drilling to enable us to
identify potential high-grade material down-plunge below the 1,500-metre level.
Given the close proximity of Kipushi to several copper smelters in neighboring
Zambia, the intersections of copper-rich chalcopyrite and bornite mineralization
encountered in the drill holes below the former mine workings are highly
encouraging."


Crews have been upgrading underground and surface infrastructure to support the
start of the drilling program since access was restored to the mine's principal
working level at 1,150 metres below the surface in December 2013. 


The Kipushi Mine is on the Central African Copperbelt in southern Katanga
Province, approximately 30 kilometres southwest of the provincial capital of
Lubumbashi and less than one kilometre from the international border with
Zambia.


The idled mine flooded in early 2011 due to a lack of pumping maintenance over
an extended period. After acquiring a 68% interest in Kipushi from Gecamines in
November 2011, Ivanhoe Mines assumed responsibility for ongoing rehabilitation
and pumping, which now has dewatered to the 1,265-metre level. Gecamines
continues to hold a 32% interest in Kipushi.  


Big Zinc's grade and tonnage potentially are higher than previously estimated,
new review indicates.


Mr. Johansson also reported that Ivanhoe recently received the findings of an
independent review conducted by MSA Group (Pty.) Ltd., of Johannesburg, based on
results of a comprehensive re-sampling program of historical Kipushi core from
drilling by Gecamines into the Big Zinc Discovery in the early 1990s. 


A total of 384 historical quarter-core (NQ sized) samples were collected and
dispatched to Bureau Veritas Minerals Pty. Ltd.'s laboratory in Australia. A
total of 457 samples, including quality-control samples, were submitted to
Bureau Veritas and analyzed for gold by fire assay, and for multi-elements,
including zinc and copper, by sodium peroxide fusion and ICP-AES/MS finish. The
re-sampling program was conducted over eight complete drill intersections of the
Big Zinc from eight separate section lines and represented 18% of the total
samples in the Big Zinc's historical assay database. 


MSA's review of the recent re-sampling revealed that the zinc assay results
generally report higher - and averaged 5.5% higher - than the assay results
originally reported by Gecamines. MSA also concluded that density applied by
Gecamines for estimating the tonnage in the Big Zinc Discovery was understated
by an average of 9%. Despite the low bias, the review confirms that historical
assay values reported by Gecamines are reasonable and can be replicated within a
reasonable level of error by international accredited laboratories under strict
QA/QC control. This is an important milestone for Ivanhoe as part of its program
to establish current resource estimates for its Kipushi Project.


Known resources at Kipushi's currently identified deposits

Previous mining at Kipushi was conducted to a below-surface depth of 1,207
metres on the Kipushi Fault, a deposit of high-grade, copper-zinc-lead
mineralization that has a strike length of 600 metres. The Fault Zone
mineralization is known to extend to at least 1,800 metres below surface, based
on previous drilling reports prepared by Gecamines. 


The Big Zinc Discovery, adjacent to the Fault Zone on the footwall side, was
discovered shortly before the mine suspended production in 1993 and never has
been mined. 


Accessible from existing underground workings, the Big Zinc has a strike length
of at least 100 metres, a true thickness calculated at 40 to 80 metres, and is
open to depth. Gecamines also reported that multiple, steeply-dipping, Big Zinc
exploratory holes intersected exceptionally high-grade zinc mineralization,
grading 42% to 45% zinc, between the 1,375-metre and 1,600-metre levels, with
estimated, apparent thicknesses of between 60 and 100 metres. 


Kipushi's 68 years of production history 

Following its start-up in 1924 as the Prince Leopold Mine, Kipushi produced a
total of 6.6 million tonnes of zinc and 4.0 million tonnes of copper - from 60
million tonnes of ore grading 11% zinc and approximately 7% copper - until
political instability prompted the suspension of operations in 1993. The mine
also produced 278 tonnes of germanium between 1956 and 1978. 


In addition to the recorded production of copper, zinc, lead and germanium,
historical Gecamines mine-level plans for Kipushi also reported the presence of
precious metals. There is no formal record of gold and silver production; the
mine's concentrate was shipped to Belgium and any recovery of precious metals
was not disclosed during the colonial era. 


To view figures associated with this press release, please visit the following
link: http://media3.marketwire.com/docs/939814_FIGURES.pdf. 


Previous estimate of historical resources 

IMC Group Consulting, which prepared the current Kipushi Technical Report,
considers the historical estimate prepared by Techpro Mining and Metallurgy in
1997 to be the most relevant and reliable. 


Techpro reported the following resources:



----------------------------------------------------------------------------
               Resource Category                 Tonnes    Copper %  Zinc % 
----------------------------------------------------------------------------
                   Measured                     8,899,979    2.53     9.99  
----------------------------------------------------------------------------
                   Indicated                    8,029,127    2.09     24.21 
----------------------------------------------------------------------------
                     Total                     16,929,106    2.32     16.76 
----------------------------------------------------------------------------
                   Inferred                     9,046,352    1.93     23.32 
----------------------------------------------------------------------------
 Totals shown above include the following Big                               
                Zinc resources:                                             
----------------------------------------------------------------------------
                   Measured                      793,086     1.16     33.52 
----------------------------------------------------------------------------
                   Indicated                    3,918,366    0.68     39.57 
----------------------------------------------------------------------------
             Measured & Indicated               4,711,452    0.76     38.55 
----------------------------------------------------------------------------



IMC is of the opinion that the Techpro estimate generally is fair and reasonable
for demonstrated Measured plus Indicated resources and that Inferred mineral
resource estimates largely represent the projection of Kipushi's Fault Zone
mineralization from the 1,500-metre level to the 1,800-metre level.


Although Gecamines' drilling confirmed that the Big Zinc continued down to at
least the 1,640-metre level, the historical Measured and Indicated Resources for
the Big Zinc were stated only to 1,500 metres. 


A Qualified Person has not done sufficient work to classify the historical
estimates as current Mineral Resources and Ivanhoe Mines is not treating such
estimates as current Mineral Resources. The 1997 estimate was prepared in
accordance with the JORC Code. Ivanhoe Mines will validate previous work through
new drilling, sampling, assaying and other procedures to produce a mineral
resource that is current for CIM purposes.


Further information relating to the historical resource estimate is included in
the Kipushi NI 43-101 Technical Report, dated September 2012, prepared by IMC
and available at www.sedar.com and at www.ivanhoemines.com/i/pdf/Kipushi.pdf.


Qualified Person, Quality Control and Assurance

The scientific and technical information in this release has been reviewed and
approved by Stephen Torr, P.Geo., Ivanhoe Mines' Vice President, Project Geology
and Evaluation, a Qualified Person under the terms of National Instrument
43-101. Mr. Torr has verified the technical data disclosed in this press
release.


Ivanhoe Mines maintains a comprehensive chain of custody and QA-QC program on
assays from its Kipushi Project. Half-split core is prepared at its preparation
laboratory in Kolwezi before being shipped to Ultra Trace Geoanalytical
Laboratories in Australia for external assay. Industry-standard certified
reference materials and blanks are inserted into the sample stream prior to
dispatch to Ultra Trace. Ivanhoe Mines' QA-QC program has been set up in
consultation with MSA Group (Pty.) Ltd., of Johannesburg, and is being
independently monitored by them.


About Ivanhoe Mines

Ivanhoe Mines, with offices in Canada, the United Kingdom and South Africa, is
advancing and developing its three principal projects:




--  The Kamoa copper discovery in a previously unknown extension of the
    Central African Copperbelt in the DRC's Katanga Province. 
--  The Platreef Discovery of platinum, palladium, nickel, copper, gold and
    rhodium on the Northern Limb of the Bushveld Complex in South Africa. 
--  The historic, high-grade Kipushi zinc-copper mine, also on the
    Copperbelt in the DRC, which now is being drilled and upgraded following
    an 18-year care-and-maintenance program that ended when Ivanhoe acquired
    its majority interest in the mine in 2011. 



Ivanhoe is evaluating other opportunities as part of its objective to become a
broadly based, international mining company. 


FORWARD-LOOKING STATEMENTS 

Statements in this release that are forward-looking statements are subject to
various risks and uncertainties concerning the specific factors disclosed here
and elsewhere in the company's periodic filings with Canadian securities
regulators. When used in this document, the words such as "could," "plan,"
"estimate," "expect," "intend," "may," "potential," "should" and similar
expressions, are forward-looking statements. Information provided in this
document is necessarily summarized and may not contain all available material
information.


Statements in this release that constitute forward-looking statements or
information include, but are not limited to statements regarding the potential
for Big Zinc grade and tonnage to be potentially higher than previous estimates;
statements regarding the number of drill rigs and drilling progress; and
statements regarding the timing of receipt of assays and similar analytical
results.


Forward-looking statements involve significant risks and uncertainties, should
not be read as guarantees of future performance or results, and will not
necessarily be accurate indicators of whether or not such results will be
achieved. All such forward-looking information and statements are based on
certain assumptions and analyses made by Ivanhoe Mines' management in light of
their experience and perception of historical trends, current conditions and
expected future developments, as well as other factors management believe are
appropriate in the circumstances. These statements, however, are subject to a
variety of risks and uncertainties and other factors that could cause actual
events or results to differ materially from those projected in the
forward-looking information or statements including, but not limited to,
unexpected changes in laws, rules or regulations, or their enforcement by
applicable authorities; the failure of parties to contracts to perform as
agreed; social or labour unrest; changes in commodity prices; and the failure of
exploration programs or studies to deliver anticipated results or results that
would justify and support continued exploration, studies, development or
operations. Other important factors that could cause actual results to differ
from these forward-looking statements also include those described under the
heading "Risk Factors" in the company's most recently filed MD&A as well as in
the most recent Annual Information Form filed by Ivanhoe Mines. Readers are
cautioned not to place undue reliance on forward-looking information or
statements.


FOR FURTHER INFORMATION PLEASE CONTACT: 
Ivanhoe Mines Ltd. - Investors
Bill Trenaman
+1.604.331.9834


Ivanhoe Mines Ltd. - Media
North America:
Bob Williamson
+1.604.512.4856


South Africa:
Jeremy Michaels
+27.11.088.4300
Website: www.ivanhoemines.com

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