The most recent hole completed on the Tulsequah Chief massive sulphide project in northwestern British Columbia is reported to have intersected 20 ft. of mineralization within a wide stratigraphic interval of intense vent-type alteration. Assay results are expected shortly. Redfern Resources (TSE), which has earned a 40% interest in the project from Cominco (TSE), said hole 24 also encountered a thick post-mineral diorite intrusive sill that may have disrupted the continuity of mineralization in this area. As a result, the company said it is not known whether the mineralized interval is in the upper H lens or the lower A-B lens.
Drilling on hole 25 is still in progress. Redfern noted, however, that the hole had intersected 5.5 ft. of “well-mineralized massive sulphides which may be a new lens at a higher stratigraphic level than the H lens.”
Tulsequah Chief is a former producer that was operated by Cominco from 1951 to 1957 when low metal prices forced a closure. At the end of the 1989 drill program, Redfern announced a preliminary reserve estimate of 5.8 million tons grading 1.6% copper, 1.3% lead, 7.0% zinc, 0.08 oz. gold and 2.9 oz. silver per ton.
In late September of this year, Redfern reported that preliminary reserves are now “in the order of 10 million tons and a potential for 20 million tons is considered realistic.”
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File: VICEROY
file: xv-vice.u Oct. 1/90
Viceroy gets approval for Castle Mountain
VANCOUVER — It has been a long, tough and expensive haul, but Viceroy Resource (TSE) recently moved a giant step closer to being able to start construction of its Castle Mountain gold project in California.
The company received unanimous approval of its application to develop the mine from the County of San Bernardino. This came about after Viceroy and local and national environmental groups were able to resolve issues of concern largely relating to bonding requirements and reclamation.
The environmental groups proposed revisions to the county’s conditions of approval which were aimed at extending the period for bond release and establishing a procedure to review revegetation goals. Once these revisions were adopted, the environmental groups withdrew their opposition to the issuance of the county permit.
Deborah Reames of the Sierra Club stated: “Viceroy has agreed to implement unprecedented measures to minimize the environmental impact resulting from large scale mining in the desert and we applaud their efforts.”
A record of decision is expected shortly from the Bureau of Land Management, this being the final requirement before construction can begin.
Viceroy’s plans call for an 8,000-ton-per-day heap leach mining operation. Proven and probable reserves are estimated at 24.6 million tons grading an average of 0.047 oz. gold per ton. Three additional zones contain a further possible reserve of 13.5 million tons grading 0.046 oz.
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