TSX Venture Exchange
VANCOUVER, Feb. 7 /CNW/ - Global Minerals is pleased to announce that it
has received the preliminary Metallurgical Report for its Strieborna
silver/copper/antimony project, by Dr. Corby Anderson, Director and Principal
Process Engineer of The Center for Advanced Mineral & Metallurgical
Processing, Montana Tech, University of Montana. Dr. Anderson was the mineral
processing engineer of Sunshine Mining and Refining Co., which carried out
extensive metallurgical tests on concentrates from Strieborna in the
The report outlines the design for a 500 Tonne Per Day Flotation Mill
which, based on previous metallurgical tests, and on historical resource
estimates, could produce approximately 40-50 tonnes of concentrate per day,
grading 25-30 % Cu, 4000-5000 g/T Ag, 5-10 g/T Au 15-20% Sb, 0.75-1.0 % Hg.
Based on historic information, the report assumes that ore grading
approximately 489.3 g/T Ag, 2.093 % Cu, 1.376 % Sb, and 0.0439 % Hg would be
mined at a rate of 500 tonnes per day for a total of 175,000 tonnes per annum,
with the - proposed processing plant providing a recovery rate of between
90-95% from Ag and Cu bearing tetrahedrite.
The report further recommends that the flotation concentrate be treated
for selective removal of antimony, arsenic and mercury using an alkaline
sulphide hydrometallurgical process, which has been in use for over fifty
years. Antimony metal or value added antimony products could also be produced,
with arsenic being precipitated and stabilized as scorodite or ferrihydrite.
Mercury will also be precipitated and stabilized as a polymeric solid.
Any gold in the concentrate could also be recovered utilizing this
process, thus avoiding the use of cyanide. Additionally, value added
by-products such as sodium sulfate, caustic, sulfuric acid or ammonium sulfate
fertilizer may also be produced from this process as desired.
President and CEO George Heard commented, "We are delighted to have
confirmed what management has believed all along - that a proven metallurgical
process in use for over 50 years can recover the silver, copper and antimony
from Strieborna ores - while at the same time stabilizing any potentially
Global Minerals is a Canadian-based company with focus on the
acquisition, exploration and development of mineral property interests.
This press release was prepared by George Heard, B. Sc., MBA, P. Eng., a
qualified person in accordance with National Instrument 43-101 Standards of
Disclosure for Mineral Projects.
Global Minerals Ltd.
George W. Heard
President and CEO
The TSX Venture Exchange has not reviewed and does not accept
responsibility for the adequacy of this release.
For further information:
For further information: about Global, visit www.cgmltd.com, or contact
investor relations, Derek Sutherland, at (778) 786-1531 or email