Form 6-K
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 OF
THE SECURITIES EXCHANGE ACT OF 1934
From: September 28, 2010
IVANHOE MINES LTD.
(Translation of Registrants Name into English)
Suite 654 999 CANADA PLACE, VANCOUVER, BRITISH COLUMBIA V6C 3E1
(Address of Principal Executive Offices)
(Indicate by check mark whether the registrant files or will file annual reports under cover of
Form 20-F or Form 40-F.)
Form 20-F- o Form 40-F- þ
(Indicate by check mark whether the registrant by furnishing the information contained in this form
is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the
Securities Exchange Act of 1934.)
Yes: o No: þ
(If Yes is marked, indicate below the file number assigned to the registrant in connection with
Rule 12g3-2(b): 82-___________.)
Enclosed:
News Release
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September 28, 2010 |
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New drill hole at Oyu Tolgoi intercepts 938 metres
of near-continuous copper/gold mineralization
between Heruga Deposit and Southern Oyu deposits
Intercepts of up to 10 grams of gold/tonne near bottom of hole
in discovery area now known as Heruga North
ULAANBAATAR, MONGOLIA Robert Friedland, Executive Chairman of Ivanhoe Mines Ltd., and Richard
Gosse, Vice-President, Exploration, announced today that the company has intercepted almost one
kilometre of near-continuous gold and copper mineralization in drill hole OTD1510 at Oyu Tolgoi,
making it the longest exploration drill intercept of gold and copper mineralization recorded since
Ivanhoe began drilling at the Oyu Tolgoi Project in 2001.
Hole OTD1510 intercepted 112 metres grading 1.36 grams of gold per tonne (g/t) and 0.34% copper,
with a copper equivalent grade of 1.21% (CuEq), at a down-hole depth of between 2,286 and 2,398
metres. The intercept included 20 metres grading 3.78 g/t gold and 0.64% copper, with a CuEq grade
of 3.06%, at a down-hole depth of between 2376 and 2396 metres, and six metres of 8.4 g/t gold and
0.66% copper, with a CuEq grade of 6.05%, at a down-hole depth of between 2388 and 2394 metres.
Individual two-metre samples near the bottom of hole OTD1510 returned gold assays of approximately
10 grams per tonne among the highest gold grades ever drilled at Oyu Tolgoi.
Over the entire 938-metre intercept, OTD1510 averaged 0.42 g/t gold and 0.46% copper, with a CuEq
grade of 0.76%, at a down-hole depth of between 1460 and 2398 metres (true depth below surface of
between approximately 1200 and 1885 metres).
To intercept almost one kilometre of copper and gold mineralization in a new drill hole is a
remarkable development, considering that we already have drilled more than 1,650 holes totalling
almost 900 kilometres at the project during the past 10 years, Mr. Friedland said.
Drill hole OTD1510 extends the Oyu Tolgoi mineralized system and demonstrates yet again the
incredible potential to significantly add to the presently defined copper and gold resources. While
Oyu Tolgoi already is one of the worlds largest deposits of gold and copper, hole OTD1510 is
consistent with our long-held view that the Oyu Tolgoi mineralized system contains significantly
more gold and copper than we have delineated to date under NI 43-101 standards. We are particularly
pleased to see this outstanding intersection in hole OTD1510, right where the advanced technology,
induced-polarization section indicated it would be found.
Maps and sections of the Oyu Tolgoi discovery are attached at the back of this release.
The area, previously known as the New Discovery Zone, now has been renamed Heruga North. The
OTD1510 intercept indicates that Heruga North is part of a 2.5-kilometre, gold-rich mineralized
extension of the Heruga Deposit, stretching north from the southern border of the Oyu Tolgoi mining
licence to the Southern Oyu deposits.
Based on interpreted geology and a large, coincident, gradient-array induced polarization (IP)
chargeability anomaly identified by proprietary, deep-exploration technology, Hole OTD1510 was
targeted on a critical, 600-metre gap in the known mineralization between the northern,
fault-controlled limit of the Heruga Deposit and the former New Discovery Zone.
Heruga North discovery confirms ongoing potential to expand Oyu Tolgoi system
The 938-metre Heruga North intercept in Hole OTD1510 covers a horizontal distance of 643 metres and
a vertical distance of 681 metres. The hole was stopped after it entered the West Bat Fault, which
appears to form the western boundary of the high-grade mineralization. Ivanhoe has begun drilling a
daughter hole OTD1510B to better delineate the extent of the gold-rich mineralization
encountered in OTD1510.
Highlighted Heruga North drill holes previously reported by Ivanhoe include:
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OTD1487A 2.13 g/t gold and 0.82% copper (CuEq grade 2.24%) over 78 metres from 2258 and
2336 metres. |
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OTD1487A 0.85 g/t gold and 0.54% copper (CuEq grade 1.12%) over 358 metres from 1978 and
2336 metres. |
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OTD1487 0.10 g/t gold and 1.65% copper (CuEq grade 1.73%) over 16 metres from 1978 and
1994 metres. |
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OTD1487 0.85 g/t gold and 0.89% copper (CuEq grade 1.47%) over 25.7 metres from 2028 and
2053.7 metres. |
Mr. Friedland said that the discovery of additional, multi-kilometre-long zones of gold-rich
porphyry mineralization, like Heruga North, allows for considerable flexibility in future
development phases at Oyu Tolgoi. Its possible that Heruga and Heruga North eventually could be
developed together as one of the worlds largest underground gold mines.
Construction of Oyu Tolgoi is on schedule to begin initial production in late 2012.
Heruga North extends the Heruga Deposit
Ivanhoes deep diamond drilling between the Heruga Deposit and the Southwest Oyu deposits first
identified the zone, now named Heruga North, in December 2008. Since the initial discovery, Ivanhoe
has completed approximately 43,500 metres of wide-spaced diamond drilling into the Heruga North
zone. The name Heruga means supreme happiness.
Geological modelling indicates that Heruga North is the northern continuation of the Heruga
Deposit, with a horizontal displacement of more than 500 metres along a fault between the two
zones. The top of Heruga North is approximately 1,100 metres below surface and slopes gradually
downward as it extends to the north. The Solongo Fault forms the current northern limit of
mineralization. Although the overall limits of the system have yet to be defined, an approximate
2.5-kilometre, northeast-trending corridor from the Heruga Deposit in the south to the Solongo
Fault in the north is potentially mineralized over a height of at least 700 metres and width of up
to 700 metres.
Mineralized intercepts in Hole OTD1510 and other recent Heruga North drill holes:
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From |
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To |
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Interval |
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Gold |
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Copper |
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Mo |
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Hole |
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(m) |
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(m) |
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(m) |
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g/t |
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% |
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ppm |
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CuEq |
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OTD1500A |
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1462 |
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1506 |
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44 |
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0.09 |
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0.55 |
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55 |
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0.64 |
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OTD1501 |
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1662 |
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1682 |
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20 |
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0.12 |
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1.06 |
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12 |
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1.14 |
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including |
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1724 |
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1730 |
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6 |
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0.07 |
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1.23 |
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30 |
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1.29 |
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1754 |
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1776 |
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22 |
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0.03 |
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0.59 |
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39 |
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0.63 |
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OTD1502 |
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1496 |
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1542 |
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46 |
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0.01 |
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0.33 |
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64 |
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0.37 |
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1970 |
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1982 |
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12 |
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0.10 |
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0.99 |
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38 |
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1.07 |
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OTD1500B |
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2066 |
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2094 |
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28 |
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2.30 |
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1.35 |
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200 |
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2.92 |
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2182 |
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2276 |
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94 |
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0.91 |
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0.60 |
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60 |
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1.21 |
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OTD1510 |
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1460 |
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2398 |
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938 |
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0.42 |
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0.46 |
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72 |
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0.76 |
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including |
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1460 |
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1492 |
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32 |
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0.08 |
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0.66 |
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22 |
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0.72 |
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and |
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1504 |
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1742 |
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238 |
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0.11 |
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0.41 |
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37 |
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0.50 |
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and |
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1758 |
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1780 |
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22 |
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0.39 |
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0.59 |
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140 |
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0.91 |
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and |
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1792 |
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1976 |
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184 |
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0.55 |
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0.59 |
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74 |
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0.98 |
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and |
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1986 |
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2006 |
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20 |
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0.60 |
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0.53 |
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83 |
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0.96 |
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and |
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2012 |
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2074 |
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62 |
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1.08 |
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1.11 |
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235 |
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1.93 |
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and |
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2090 |
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2162 |
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72 |
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0.18 |
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0.36 |
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139 |
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0.55 |
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and |
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2166 |
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2184 |
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18 |
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0.13 |
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0.57 |
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225 |
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0.77 |
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and |
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2214 |
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2232 |
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18 |
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0.19 |
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0.55 |
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166 |
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0.75 |
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and |
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2246 |
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2264 |
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18 |
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0.21 |
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0.46 |
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132 |
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0.67 |
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and |
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2286 |
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2398 |
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112 |
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1.36 |
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0.34 |
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14 |
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1.21 |
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including |
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2272 |
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2312 |
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40 |
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0.87 |
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0.49 |
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92 |
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1.09 |
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and |
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2326 |
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2354 |
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28 |
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1.32 |
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0.39 |
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8 |
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1.23 |
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and |
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2364 |
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2398 |
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34 |
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2.44 |
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0.47 |
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6 |
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2.03 |
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including |
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2376 |
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2396 |
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20 |
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3.78 |
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0.64 |
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6 |
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3.06 |
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including |
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2388 |
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2394 |
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6 |
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8.44 |
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0.66 |
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5 |
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6.05 |
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OTD1502A |
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Drilling underway. |
OTD1510B |
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Drilling underway. |
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* |
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The copper equivalent grade (CuEq) was calculated using assumed metal prices of $1.35/lb for
copper, $650/oz for gold and $10/lb for molybdenum. For convenience, the formula is: CuEq =
%Cu+((g/tAu*18.98)+(Mo*0.01586))/29.76. Earlier Heruga North drilling data is contained in
Ivanhoes 2010 Annual Information Form (AIF) available on SEDAR or Ivanhoes website. |
There has been insufficient drilling to define a mineral resource at Heruga North. However, given
the current dimensions of the copper-gold-molybdenum mineralized zone defined to date and drill
results, Ivanhoe believes that the Heruga North exploration target could have similar tonnage and
grade to the adjoining Heruga Deposit. As of March 2010, the Heruga Deposit had an estimated
inferred resource of 970 million tonnes grading 0.48% copper, 0.48 g/t gold and 140 ppm molybdenum,
for a copper equivalent grade of 0.86%, using a 0.60% copper equivalent cut-off grade. Based on the
March 2010 estimate, the Heruga Deposit contains an estimated 10.2 billion pounds of copper and 15
million ounces of gold.
See Ivanhoes March 2010 AIF on www.ivanhoemines.com or www.sedar.com for details of the Heruga
resource estimate. Mineral resources are not mineral reserves until they have demonstrated economic
viability based on a feasibility study or pre-feasibility study.
Heruga North a major new gold-rich mineralized zone
Ivanhoe has two diamond rigs drilling additional holes from surface into Heruga North to advance
the discovery toward an initial inferred resource estimate. The estimated size of Heruga North is
based on wide-spaced drilling that Ivanhoe believes has not fully delineated the higher-grade,
gold-rich zone.
Mr. Gosse said that some of the deeper drill intercepts in Heruga North have some of the highest
gold grades (up to 10 g/t gold) and gold-to-copper ratios (higher than 10-to-1 g/t gold to %
copper) identified to date at Oyu Tolgoi. The gold-rich zone in Heruga North is analogous to the
gold-rich zone at the Heruga Deposit.
Based on the high gold and copper grades, as well as the high gold-to-copper ratio encountered and
the style and tenor of the porphyry mineralization, the significance of Heruga North compares
favourably to the major deposits that currently comprise the Oyu Tolgoi Project, Mr. Gosse said.
Quality Assurance and Quality Control
Dr. David Crane, R.P.Geo., Ivanhoe Mines Mongolia Exploration Manager, a member of the Australian
Institute of Geoscientists and a qualified person as required by NI 43-101, supervised the
preparation of the information in this news release.
The QA/QC program used at the Oyu Tolgoi Project was developed by Dr. Barry Smee, P.Geo., an
independent quality control consultant, and adopted in April 2002. Oyu Tolgoi LLCs sampling
procedure comprises collection of core samples taken on continuous two-metre intervals down each
drill hole, excluding dykes that extend more than 10 metres along the core length. Samples of
one-half of NQ and HQ core, or one-quarter of PQ core, are taken for assaying. The core is marked
with a continuous cutting line along the middle, parallel to the long axis for the purpose of
preventing a sampling bias during splitting. Splitting is done with a rock saw flushed continually
with fresh water. Samples are placed in cloth bags and sent to an on-site preparation facility
operated by SGS Mongolia LLC. In-house, matrix-matched copper-gold-molybdenum standards, and blanks
and duplicates are inserted at the sample preparation lab at the project site for quality-control
monitoring of the assay data. All samples are assayed for gold, copper, molybdenum, arsenic and
silver.
Upon receipt of assay results, values for Standard Reference Material samples and field blanks are
tabulated and compared to those from an established round-robin program. Assay results that deviate
from round-robin program results beyond pre-set tolerance limits are rejected and subject to
re-assay. Oyu Tolgoi also performs check assays on a regular basis at the rate of one per batch of
20 samples.
About Ivanhoe Mines
Ivanhoe Mines (NYSE, NASDAQ & TSX: IVN) is an international mining company with operations focused
in the Asia Pacific region. Assets include the companys 66% interest in the Oyu Tolgoi copper-gold
mine development project in southern Mongolia; its 57% interest in Mongolian coal miner SouthGobi
Resources (TSX: SGQ; HK: 1878); a 63% interest in Ivanhoe Australia (ASX: IVA), a
copper-gold-uranium-molybdenum-rhenium exploration and development company; and a 50% interest in
Altynalmas Gold Ltd., a private company developing the Kyzyl Gold Project in Kazakhstan.
Ivanhoe Mines shares are listed on the New York, NASDAQ and Toronto stock exchanges under the
symbol IVN.
Information contacts
Ivanhoe Mines Investors Relations: Bill Trenaman. Media: Bob Williamson +1.604.688.5755
Forward-Looking Statements. This news release contains forward-looking statements. Forward-looking
statements are statements which relate to future events such as Ivanhoes intent to continue
drilling at the Oyu Tolgoi Project. In some cases, you can identify forward-looking statements by
terminology such as may, should, will, expects, plans, anticipates, believes,
estimates, predicts, potential or continue or the negative of these terms or other
comparable terminology. Forward-looking statements within this release include, but are not limited
to, Ivanhoes belief that Heruga North could have similar tonnage and grade to the adjoining Heruga
Deposit; the initial inferred resource estimate for Heruga North; the statement that Oyu Tolgoi is
scheduled to begin initial production in late 2012; and the statement that Heruga and Heruga North
could be eventually developed together as one of the worlds largest underground gold mines. These
statements are only predictions and involve known and unknown risks, uncertainties and other
factors that may cause our or our industrys actual results, levels of activity, performance or
achievements to be materially different from any future results, levels of activity, performance or
achievements expressed or implied by these forward-looking statements. While these forward-looking
statements, and any assumptions upon which they are based, are made in good faith and reflect our
current judgment regarding the direction of our business, actual results almost always will vary,
sometimes materially, from any estimates, predictions, projections, assumptions or other future
performance suggested herein. Readers are referred to the sections entitled Risk Factors in
Ivanhoe Mines periodic filings with Canadian and US Securities Commissions.
The news release also contains references to estimates of mineral resources. The estimation of
resources is inherently uncertain and involves subjective judgments about many relevant factors.
The accuracy of any such estimates is a function of the quantity and quality of available data, and
of the assumptions made and judgments used in engineering and geological interpretation, which may
prove to be unreliable. There can be no assurance that these estimates will be accurate or that
such mineral reserves and mineral resources can be mined or processed profitably. Mineral resources
that are not mineral reserves do not have demonstrated economic viability. Except as required by
law, the Company does not assume the obligation to revise or update these forward-looking
statements after the date of this document or to revise them to reflect the occurrence of future
unanticipated events.
Oyu Tolgoi Longitudinal Section
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused
this report to be signed on its behalf by the undersigned, thereunto duly authorized.
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IVANHOE MINES LTD.
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Date: September 28, 2010 |
By: |
/s Beverly A. Bartlett
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BEVERLY A. BARTLETT |
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Vice President &
Corporate Secretary |
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