The Tas 61 occurrence is located is located at an elevation of approximately 990 metres on a small hill northeast of Taslincheko Creek and approximately 5.6 kilometres southeast of the east end of Inzana Lake.

The region is underlain by sedimentary and volcanic rocks of the Upper Triassic to Lower Jurassic Takla Group within the Quesnel terrane. The group comprises the informally named Inzana Lake, Rainbow, Witch Lake and Chuchi Lake formations. The Takla Group rocks have been intruded by Upper Triassic to Lower Jurassic syenitic to monzonitic intrusive rocks.

The Inzana Lake Formation is a sequence of epiclastic sediments derived from a volcanic source. It is underlain by fine-grained slates and sediments of the Rainbow Formation derived (in part) from a continental source. In turn, it is overlain by augite porphyry flows and agglomerates of the Witch Lake Formation and the subaerial maroon and green flows of the Chuchi Lake Formation.

Locally, heavily disseminated or massive sulphides are hosted in shear zones. Mineralization includes pyrite, pyrrhotite and minor chalcopyrite and magnetite in a siltstone and/or mafic to intermediate tuff and/or altered hornblende-augite porphyry. The zone has been traced for approximately 50 metres. Epidote, chlorite and calcite alteration are also reported.

In 1998, rock samples (TR-1 through TR-6) yielded up to 0.69 gram per tonne gold and 0.60 per cent copper (Assessment Report 25839).

Work History

The area has been explored in conjunction with the nearby Tas East (MINFILE 093K 080) occurrence and a completed exploration history can be found there. Two drillholes (89-60 and -61) are reported to have been completed in the area of the occurrence but no records for these holes are known.