Terrane Reports 36% Expansion of Berg Resource
posted on
May 19, 2009 06:04AM
LOM average 217,000oz/yr Au , 88 million lbs/yr Cu for 15 years on Flagship property (CAPEX payback 2.9 yrs. at $900/oz Au,$2.50Cu)
May 19, 2009 | ||||
Terrane Reports 36% Expansion of Berg Resource
Contained Metals 3.3 Billion lbs Copper, 412 Million lbs Molybdenum, 61 Million ozs Silver |
||||
VANCOUVER, BRITISH COLUMBIA--(Marketwire - May 19, 2009) - Robert Pease, President and CEO of Terrane Metals Corp. ("Terrane" or the "Company") (TSX VENTURE:TRX), is pleased to announce an updated NI 43-101 compliant Mineral Resource estimate for the Company's 100%-owned Berg Project. The updated resource incorporates results from the 31 hole - 11,661 metre core drilling program completed in October 2008. Measured and Indicated Resources have expanded by 36% over the previously reported resource to 506 million tonnes containing 3.3 billion lbs copper, 412 million lbs molybdenum and 61.4 million ozs silver. Inferred Resources contain 0.7 billion lbs copper, 107 million lbs molybdenum and 11.7 million ozs silver. The NI 43-101 Technical Report will be filed on SEDAR within 45 days. "This updated resource estimate continues to demonstrate potential to expand the Berg resource," stated Rob Pease, President and CEO of Terrane Metals Corp. "We successfully converted over 700 million pounds of copper and 120 million pounds of molybdenum from previously Inferred Resources to Measured and Indicated categories. The 2008 drilling program also discovered an additional 739 million pounds copper and 107 million pounds molybdenum of new Inferred Resources." The reported Mineral Resource estimate at a 0.30% copper equivalent cutoff grade is shown in Table I. Copper equivalent grades are calculated using metal prices of US$1.60/lb Cu, US$10/lb Mo, US$10/oz Ag and take into account forecast metallurgical recoveries into separate copper and molybdenum concentrates. TABLE I BERG MINERAL RESOURCE ESTIMATE (1) At 0.30% Copper Equivalent Cutoff Grade -------------------------------------------------------------------------- Tonnes Cu Mo Ag Cu lbs Mo lbs Ag ozs Category (millions) (%) (%) (g/t) (millions) (millions) (millions) -------------------------------------------------------------------------- Measured 53.3 0.48 0.030 4.5 559 36 7.7 -------------------------------------------------------------------------- Indicated 452.7 0.28 0.038 3.7 2,783 376 53.7 -------------------------------------------------------------------------- Measured & Indicated 506.0 0.30 0.037 3.8 3,342 412 61.4 -------------------------------------------------------------------------- -------------------------------------------------------------------------- Inferred 144.6 0.23 0.033 2.5 739 107 11.7 -------------------------------------------------------------------------- Note: (1) Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. The reported estimate is based on a 3-D geologic model where individual block grades were interpolated from 3-metre down-the-hole composites using an anisotropy model and ordinary kriging. High grade outliers were capped based on a statistical review of copper, molybdenum and silver assays. Block grades were then classified into the Indicated Mineral Resource category if the block was estimated using data from at least two drill holes. A subset of densely drilled supergene horizon was classified as Measured Mineral Resource as these blocks were estimated with a minimum of two and an average of four drill holes, with an average composite spacing of 30 metres. Inferred Mineral Resource blocks were estimated using data from only a single drill hole. Only blocks within 450 metres of the surface were included in the resource estimate. Measured, Indicated and Inferred Mineral Resources over a range of copper equivalent cutoff grades are summarized in Table II. TABLE II BERG MINERAL RESOURCE ESTIMATES (1) GRADE - TONNAGE DISTRIBUTION -------------------------------------------------------------------------- MEASURED INDICATED ------------------------------- --------------------------------- CuEQ Ton- Cu Mo Ton- Cu Mo Cut- nes lbs lbs nes lbs lbs off (mill- Cu Mo (mill- (mill- (mill- Cu Mo (mill- (mill- (%) ions) (%) (%) ions) ions) ions) (%) (%) ions) ions) -------------------------------------------------------------------------- 0.20 54.7 0.47 0.030 566 36 586.7 0.25 0.033 3,242 422 -------------------------------------------------------------------------- 0.30 53.3 0.48 0.030 559 36 452.7 0.28 0.038 2,783 376 -------------------------------------------------------------------------- 0.40 50.6 0.49 0.031 541 35 332.1 0.30 0.043 2,218 317 -------------------------------------------------------------------------- 0.50 44.0 0.50 0.034 490 33 218.0 0.33 0.049 1,570 237 -------------------------------------------------------------------------- -------------------------------------------------------------------------- MEASURED AND INDICATED INFERRED ------------------------------- --------------------------------- CuEQ Ton- Cu Mo Ton- Cu Mo Cut- nes lbs lbs nes lbs lbs off (mill- Cu Mo (mill- (mill- (mill- Cu Mo (mill- (mill- (%) ions) (%) (%) ions) ions) ions) (%) (%) ions) ions) -------------------------------------------------------------------------- 0.20 641.5 0.27 0.032 3,808 458 248.6 0.20 0.026 1,109 141 -------------------------------------------------------------------------- 0.30 506.0 0.30 0.037 3,342 412 144.6 0.23 0.033 739 107 -------------------------------------------------------------------------- 0.40 382.6 0.33 0.042 2,759 352 74.0 0.26 0.042 423 69 -------------------------------------------------------------------------- 0.50 262.0 0.36 0.047 2,059 269 30.8 0.30 0.050 202 34 -------------------------------------------------------------------------- Note: (1) Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. The 2008 program better defined the near-surface, flat-lying supergene-enriched copper horizon. The supergene horizon is extensive across the Berg resource area with a vertical thickness ranging from 40 to 200 metres. Supergene mineralization is typically covered by less than 40 metres of leached cap and overburden, and underlain by +700 metres of hypogene mineralization. Preliminary metallurgy work indicates that copper, molybdenum and silver will report to separate copper and molybdenum concentrates. Average recoveries from the supergene-enriched horizon are estimated at 83% Cu, 61% Mo, and 67% Ag. The geometry and near-surface nature of the supergene-enriched copper horizon offers the opportunity for a high-grade starter pit. Table III summarizes the Berg Mineral Resource for the supergene-enriched horizon at a 0.30% copper equivalent cut off. TABLE III BERG MINERAL RESOURCE - SUPERGENE HORIZON (1) At 0.30% Copper Equivalent Cutoff Grade -------------------------------------------------------------------------- Tonnes Cu Mo Ag Cu lbs Mo lbs Ag ozs Category (millions) (%) (%) (g/t) (millions) (millions) (millions) -------------------------------------------------------------------------- Measured 53.3 0.48 0.030 4.5 559 36 7.7 -------------------------------------------------------------------------- Indicated 82.6 0.37 0.026 3.4 679 47 9.0 -------------------------------------------------------------------------- Measured & Indicated 135.9 0.41 0.028 3.8 1,239 83 16.7 -------------------------------------------------------------------------- -------------------------------------------------------------------------- Inferred 17.7 0.33 0.021 1.8 128 8 1.0 -------------------------------------------------------------------------- Note: (1) Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. The 2008 drilling program successfully expanded the molybdenum-rich core zone, defining a steeply-inclined 2 km long panel adjacent to the Berg Stock with an estimated true width ranging from 50 to 120 metres. Molybdenum-rich mineralization has been drill tested to a vertical depth of 850 metres and is open to depth. Notable drill holes that intersected molybdenum-rich mineralization included: Hole 167 with 65.7 metres grading 0.125% Mo, Hole 176 with 75.0 metres grading 0.100% Mo, and Hole 197 with 57.7 metres grading 0.109% Mo. Drill Hole 194 is also notable in that it is the deepest hole completed to date at Berg and returned 844.5 metres grading 0.048% Mo. The hole bottomed in similar mineralization 850 vertical metres below surface. Geometry of the molybdenum-rich core zones and grade distribution within them offers a number of higher grade-lower tonnage development scenarios. Table IV summarizes the Berg Mineral Resource estimate at a 0.030% molybdenum cut off, representative of the molybdenum-rich core zone within 450 metres of surface. TABLE IV BERG MINERAL RESOURCE ESTIMATE - MOLYBDENUM RICH CORE ZONE (1) At 0.03% Molybdenum Cutoff Grade -------------------------------------------------------------------------- Tonnes Cu Mo Ag Cu lbs Mo lbs Ag ozs Category (millions) (%) (%) (g/t) (millions) (millions) (millions) -------------------------------------------------------------------------- Measured 22.4 0.48 0.048 5.0 236 24 3.6 -------------------------------------------------------------------------- Indicated 285.3 0.26 0.050 3.7 1,613 313 33.9 -------------------------------------------------------------------------- Measured & Indicated 307.7 0.27 0.050 3.8 1,848 336 37.4 -------------------------------------------------------------------------- -------------------------------------------------------------------------- Inferred 96.3 0.17 0.046 2.4 369 97 7.6 -------------------------------------------------------------------------- Note: (1) Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. ABOUT TERRANE METALS CORP. Terrane Metals Corp. is an exploration and mine development company focused on the development of the Mt. Milligan copper-gold and Berg copper-molybdenum-silver projects in British Columbia, Canada. Goldcorp Inc. (TSX:G)(NYSE:GG) owns a 59% equity interest in Terrane on a fully diluted basis. In July 2008 Terrane and Goldcorp entered into an agreement which grants Goldcorp an option to convert its equity interest in Terrane into a participating joint venture interest in the Mt. Milligan Project (see press release July 9, 2008). TERRANE METALS CORP. Robert Pease, P.Geo., FGAC, President and CEO |