Peregrine Reports 7.47 Million Carat Inferred Resource For The Top 250 Metres Of The CH-6 Kimberlite And Tonnage Estimates For CH-7 And CH-44

May 7, 2014 PDF version
Peregrine Diamonds Ltd. (“Peregrine” or “the Company”) (TSX:PGD) is pleased to announce estimates for a maiden independent Canadian National Instrument (“NI”) 43-101-compliant Inferred Mineral Resource for the top 250 metres of the CH-6 kimberlite pipe and additional tonnage as a target for further exploration. Key elements of the CH-6 estimates are:
  • An Inferred Mineral Resource of 7.47 million carats of diamonds in 2.89 million tonnes of kimberlite to a depth of 250 metres
  • Grade of 2.58 carats per tonne
  • An average diamond price of US$213 per carat and a modelled price range between US$163 and US$236 per carat as determined by WWW International Diamond Consultants in February 2014
  • An estimate of 2.60 to 3.47 million tonnes of kimberlite classified as a target for further exploration
  • The kimberlite is open at depth
Tonnage estimates have been completed for the CH-7 and CH-44 kimberlites. The CH-7 kimberlite tonnage estimate is between 2.75 and 3.97 million tonnes from surface to a depth of 280 metres. The CH-44 tonnage estimate is between 1.16 and 2.05 million tonnes from surface to a depth of 230 metres. Both CH-7 and CH-44 are open at depth.

The tonnage estimates that have been identified at CH-6, CH-7 and CH-44 are classified as targets for further exploration and are conceptual in nature. There has been insufficient exploration to define a mineral resource on those targets and it is uncertain if further exploration will result in the tonnage estimates being delineated as a mineral resource.

The CH-6, CH-7 and CH-44 kimberlite pipes are located on Peregrine’s 100 percent-owned Chidliak project (“Chidliak”), 120 kilometres from Iqaluit, the capital of Nunavut, Canada.

Geostrat Consulting Services Inc. (“Geostrat”), a consulting firm specializing in geological modelling and resource evaluation for diamonds and other commodities, prepared the CH-6 Inferred Resource estimate and verified the tonnage estimates for CH-6, CH-7 and CH-44. A detailed technical report, prepared in accordance with NI 43-101 will provide more details on this work and will be available within 45 days on SEDAR and the Company’s website.

CH-6 INFERRED RESOURCE and ADDITIONAL TONNAGE ESTIMATE
The CH-6 kimberlite has a surface expression of approximately one hectare and is open at depth. The Inferred Mineral Resource estimate was determined by integrating kimberlite volumes with density, petrology and diamond content data utilizing a geological model prepared by Peregrine personnel and reviewed by Geostrat. Size frequency analyses of diamond results from the 2013 bulk sample and caustic fusion diamond results from drill core were undertaken to confirm the continuity of mineralization and the consistency of the diamond population throughout the kimberlite.

NI 43-101 standards and Canadian Institute of Mining and Metallurgy guidelines stipulate that a Mineral Resource needs to have a “reasonable prospect of economic extraction”. In assessing whether the CH-6 Inferred Resource met this standard, Geostrat considered publicly available costs from northern Canadian diamond projects relative to the total estimated in-situ value of the CH-6 Mineral Resource and concluded that there was a reasonable prospect of economic extraction.

In addition to the 2.89 million tonne Inferred Resource, an additional 2.60 to 3.47 million tonnes of kimberlite has been estimated at CH-6, with 1.47-1.53 million tonnes above 250 metres depth. The following table summarizes the tonnage that has been estimated at CH-6.

CH-6 ADDITIONAL TONNAGE ESTIMATES

DEPTH
BELOW
SURFACE (m)