TORONTO, April 6 /CNW/ - The Cobalt Hill mineralization of pyrite-rich
quartz veins, in hydrothermally altered lorrain quartzite sediments, was
intersected in drill hole JL04-03, 300 meters (984 feet) south and drill hole
A88-63, 1950 meters (6396 feet) south, respectively of drill hole JL03-10,
located by the small shaft at Cobalt Hill.
As previously reported, results of the studies of Cobalt Hill
mineralization, by Dr. Eva Schandl, Geological Consultant, Research Associate,
Geological Dept (University of Toronto) including earlier mineralogical and
fluid inclusion reports to Flag, suggests that the saline fluids that
crystallized the quartz veins and pyrite at Cobalt Hill, were similar to the
late magmatic fluids documented at the Sudbury Igneous Complex and at other
Ni-Cu-PGE deposits. The ubiquitous occurrence of small inclusions of
nickel-rich sulfides and some chalcopyrite and gold pyrite in the quartz veins
at Cobalt Hill is evidence for the mineralization of the metals by chloride
rich solutions. The predominance of nickel sulfides and chalcophyrite
inclusions, in pyrite at Cobalt Hill, suggests that the source of these fluids
must have been nickel and copper rich, and the occurrence of chromium rich
fuchsite in the same pyrite-quartz veins implies that the source of the metals
and the chromium were probably a mafic/ultramafic intrusion at not too distant
depth. (Dr. Evan Schandl, March 3 2002).
Dr. Eva Schandl notes that in drill hole CH92-1, drilled east of the
shaft on Cobalt Hill, the presence of chromium-rich fuchsite between 1200 and
2200 feet, suggests that the projected mafic/ultramafic source rocks for
chromium (and therefore the metals) must be present at similar or shallower
depth.
Flag proposes to drill a 2000 foot vertical drill hole to explore for the
projected source of the Cobalt Hill mineralization. |
