The Monzodiorite Bluff occurrence is located on the east side of Schaft Creek approximately 67 kilometres upstream from confluence with Mess Creek. The area is underlain by volcanic rock of the Upper Triassic Stuhini Group in contact to the immediate west with the Middle to Late Triassic Hickman pluton (Stikine Plutonic Suite) consisting of hornblende-quartz diorite to granodiorite and tonalite.

Outcropping sulphide mineralization and intense chlorite-epidote-sericite alteration occurs near a small quartz monzodiorite stock that has been mapped northeast of Wolverine Creek, on the slopes below Mount Hicks. In this area, which is heavily forested, several outcrops were observed that contained disseminated pyrite-chalcopyrite and pyrite-chalcopyrite-calcite veins with chlorite-epidote halos.

In 2015, Teck explored in the vicinity of a monzodiorite stock. Two samples were anomalous in copper, gold, and molybdenum. A sample of andesitic volcaniclastic containing pyrite and chalcopyrite and with moderate sericitic alteration yielded 0.19 per cent copper, 0.0046 per cent molybdenum, 0.057 gram per tonne gold and 0.45 gram per tonne silver (Sample 1143996, Assessment Report 35967). The second sample was taken of the monzodiorite stock which was also observed to have strong sericite alteration. The sample graded 0.1 per cent copper, 0.0029 per cent molybdenum, 0.042 gram per tonne gold and 0.4 gram per tonne silver (Sample 1143995, Assessment Report 35967).

Work History

In 1969 and 1970, Northern Valley Mines conducted a 60 kilometre ground magnetic survey and collected 833 soil samples over their Schaft Creek claims consisting of the Hicks, Big S, Boy, Sno, NVM and Pepsi claims. The company reported mineralization occurring within plutonic rocks, but mostly within the highly fractured volcanics. Disseminations, stockworks and blebs of pyrite, chalcopyrite, bornite and lesser molybdenite occur.

In 2015, Teck Resources conducted soil and rock sampling over their Wolverine Creek grid area and nearby. Teck collected 116 rock samples for analysis, 56 were taken from the Mount LaCasse area to the north of the Schaft Creek deposit, and 60 from the Mount Hicks area to the south.

See Schaft Creek (104G 015) for further details of area geology and a common work history.