Diagem Updates on Bulk-Testing at Collier-04 Kimberlite Pipe in Brazil
30 8월 2007 - 11:28PM
Marketwired Canada
Diagem Inc. ("Diagem" or "the Company") (TSX VENTURE:DGM) is pleased to report
grade results from the July 2007 large-scale bulk sampling at Collier-04. Diagem
has processed an additional of 3,882 cubic metres of material (during the period
from July 1(st) to August 17(th)) from the weathered portion of the kimberlite
pipe at an average diamond grade of 0.42 carats per cubic metre. Furthermore,
plant efficiency has shown constant improvement by producing cleaner
concentrates as revealed by the concentration ratio. One reason for the higher
grade was that the testing moved to a different mining block. Grade results
should be assessed on an overall basis rather than on a sample-by-sample basis.
Up to August 18, 2007, a total of 37,341 commercial size (greater than 1.7 mm)
diamonds weighing 4,632 carats have been recovered from the processing of 14,245
cubic metres of material (Table 1). This represents an average diamond grade of
0.33 carats per cubic metre and an average carat weight of 0.12 carats per
diamond.
The Company continues to assess the economic feasibility of the Collier-04
project which is dependant upon several variables including a valuation of the
diamonds recovered, the economically efficient recovery of diamonds between 1.0
and 1.7 millimetres, and improvements in recovery from sorting facilities
including the installation of a grease table to recover non-fluorescent
diamonds. A parcel of diamonds from Collier-04 is currently being prepared for
valuation.
Diagem's Chief Executive Officer, Denis Francoeur, commented "While sampling
results and plant effectiveness at Collier-04 improved, the project is still
considered secondary to the Company's primary focus, that being the delineation
and the evaluation of the Chapadao cluster and "21 de Abril" cluster of
kimberlite pipes".
Table 1: Collier-04 Kimberlite Pipe Diamond Recovery and Grade (up to
August 17(th), 2007)
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Pilot Plant Performance (one shift -- 5 days per week)
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Diamonds greater
Pilot Plant Nominal Capacity: 22 m3/hr than 1.7 mm
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Volume Comparative Grade
2007 m3 m3/hr Concentration Ratio Carats ct/m3 # of Stones
---------------------------------------------------------------------------
March 1,034 11 70:1 342 0.33 2,722
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April 1,151 13 95:1 368 0.32 2,954
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May 2,349 15 140:1 620 0.26 4,875
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June 2,850 18 150:1 840 0.29 6,410
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July 3,480 19 163:1 1,391 0.40 11,334
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Sub Total 11,224 3,561 0.32 28,295
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Aug 17 402 257 0.64 1,948
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Moveable Plants Performance
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Movable Plants (MP1+MP2) each with a Nominal
Capacity of 10 m3/hr (i)
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Aug 17 2,619 9 approx. 80:1 814 0.31 7,098
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Total Diamond Recovery
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Grand
Total 14,245 4,632 0.33 37,341
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Diamonds coarser than 1.0 carat make up 7% of the total carat weight. Individual
diamonds weighing more than 1.0 carat are shown by weight category in Table 2
below.
Table 2: Individual diamonds weighing more than 1.0 carat
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# Diamonds # Diamonds # Diamonds # Diamonds
Total 1 to 2 2 to 4 4 to 10 above 10
# Diamonds Carats carats carats carats carats
---------------------------------------------------------------------------
156 340 119 21 13 3
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About Diagem
Diagem Inc. is a Canadian exploration mining company focused on diamondiferous
resources in the Juina Diamond Province of Mato Grosso, Brazil, where it
controls a large portfolio of mineral properties. The Company has one advanced
development stage project and recently discovered two clusters of kimberlite
pipes believed to be the main sources of the Juina Province historical alluvial
diamond production.
This press release has been reviewed by Denis Francoeur, M.Sc., P.Geo., Diagem's
Chief Executive Officer and a qualified person under National Instrument 43-101.
For further information on Diagem, please visit WWW.DIAGEM.COM or contact Denis
Francoeur, CEO, at 514-866-6001 (ext 265), Paul Einarson, CFO, at 514-866-6001
(ext 251) or Nicole Blanchard, Investor Relations, at 450-627-6600.
Forward-looking statements: Except for statements of historical fact, all
statements in this news release, without limitation, regarding new projects,
acquisitions, future plans and objectives are forward-looking statements which
involve risks and uncertainties. There can be no assurance that such statements
will prove to be accurate; actual results and future events could differ
materially from those anticipated in such statements.
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