RE:New Silver Discovery
"Kootenay's La Negra Diatreme Breccia prospect is situated approximately 6.5 kms north of Kootenay's flagship Promontorio Silver Resource in Sonora, Mexico and is one of several new Diatreme Breccia prospects recently identified within a 25 x 15 km mineralized corridor"
"an elongate pipe like breccia body the width, length and depth of which is not yet known."
"The fluids, alterations and mineralization at La Negra have been derived from a deeper source as fragments/mineralization are in marked contrast to the propylite-altered country rock. This infers a deeper source for the La Negra mineralization and that the breccias are manifestations of a potentially larger hydrothermal system. Iron oxides occur in minor to moderate amounts in the matrix and fracture boxworks. Sulfides appear at a 50 to 60 meter depth and mixed oxides/sulfides occur up to 190 meters (the deepest drill hole thus far). Very fine-grained galena has been observed as well as probable silver sulfo salts or silver sulfide.Preliminary petrology from surface samples indicates silver is contained in the matrix gangue as Embolite/Chlorargyrite, a silver halide. Geochemistry of drill cores indicates silver in association with silver sulfides or sulfosalts. This pattern of silver hosted in Chlorargyrite and silver sulfides/sulfo salts is observed at Pan American's Alamo Dorado mine some 190 km to the south."
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