Osisko Geochemical Test Work Returns Positive Results on Canadian Malartic Ore
27 November 2007 - 2:00PM
Marketwired
MONTREAL, QUEBEC (FRANKFURT: EWX) is pleased to announce results
from geochemical analyses on four composite samples of gold
mineralization from the Canadian Malartic deposit, which are
currently undergoing metallurgical test work at SGS Lakefield,
located in Thunder Bay, Ontario. The geochemical results indicate
that mineralization at Canadian Malartic is devoid of undesirable
contaminants, which is very positive from both a metallurgical and
environmental point of view.
Four different samples (approximately 240 kg each) representing
the four main ore types in the deposit were composited from 80 to
84 rejects selected from drill holes spanning the entire strike
length of the deposit. Rejects were selected to approximate bulk
average grade of the deposit (about 1.0 g/t Au).
Geochemical analyses on the composite samples, tabled below,
indicate that no deleterious elements are present in the deposit
(arsenic, bismuth, cadmium, antimony), there are no significant
base metals and only minor sulfur present in disseminated
pyrite:
---------------------------------------------------------------------------
Element K-CARB Silicified K-CARB Silicified
porphyry porphyry sediments sediments
---------------------------------------------------------------------------
Au (ppm) 1.10 1.10 1.13 1.08
---------------------------------------------------------------------------
Ag (ppm) 1.90 3.00 1.00 2.20
---------------------------------------------------------------------------
---------------------------------------------------------------------------
As (ppm) less than 30 less than 30 less than 30 less than 30
---------------------------------------------------------------------------
Bi (ppm) less than 20 less than 20 less than 20 less than 20
---------------------------------------------------------------------------
Cd (ppm) less than 2 less than 2 less than 2 less than 2
---------------------------------------------------------------------------
Sb (ppm) less than 10 less than 10 less than 10 less than 10
---------------------------------------------------------------------------
S (%) 1.02 1.14 1.19 1.96
---------------------------------------------------------------------------
Cu (ppm) 22 23 51 45
---------------------------------------------------------------------------
Mo (ppm) less than 5 5 less than 5 11
---------------------------------------------------------------------------
Pb (ppm) less than 30 less than 30 less than 30 less than 30
---------------------------------------------------------------------------
Zn (ppm) 43 57 74 80
---------------------------------------------------------------------------
K-CARB stands for potassic+carbonate alteration, 1 ppm = 1 g/t
Metallurgical test work is ongoing and further results will be
announced as they become available. Osisko Exploration Ltd. is
currently evaluating the Canadian Malartic gold deposit and
adjacent areas for a large-scale open pit, bulk-tonnage mining
operation. The Company is well-funded with approximately $200
million on hand and is carrying out an aggressive definition
drilling and exploration campaign. An updated NI 43-101 compliant,
inferred gold resource estimate on the main Canadian Malartic
deposit was released on July 5, 2007 and the full report is
available on SEDAR. Mr. Robert Wares, P. Geo. and Executive
Vice-President of Osisko, is the Qualified Person responsible for
the technical information reported in this news release.
Contacts: Osisko Exploration Ltd. John Burzynski Vice-President
Corporate Development 514-735-7131 www.osisko.com Investor
Relations Daniel Boase 416-742-5600 Toll Free: 1-866-580-8891
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