The Sahara occurrence is located at an elevation of approximately 1360 metres on a north-northeast–facing slope, approximately 3 kilometres north of the north end of Gordon Lake.
The area lies in the southern part of the multistage Upper Triassic to Lower Jurassic Guichon Creek Batholith. The area surrounding Farr Lake is underlain by Chataway variety rocks of the older Highland Valley phase of the batholith. This unit is typically fine-grained granodiorite to hornblende-rich quartz diorite. In several places the granodiorite is cut by irregular to tabular bodies of fine- to medium-grained pink aplite. The dikes vary in width from 5 to 60 centimetres. Occasional small barren quartz veinlets are also present. Joints and faults of variable orientations are accompanied by epidote, chlorite and carbonate alteration mineralogy.
The original trenches on the Sahara showing (Lulu No. 1 claim) expose a zone of bleaching and alteration at least 61 metres wide. Mineralization and alteration are structurally. Patches of limonite, chlorite, epidote, minute particles of malachite and azurite, and minor disseminated chalcocite occur in a shear zone trending north-northwest and dipping very steeply. Chalcopyrite, bornite and minor molybdenite mineralization are also reported.
A similar zone of alteration and mineralization is exposed approximately 200 metres to the west, where chalcocite occurs in a small quartz-calcite vein.
Work History
In 1957 and 1958, Noranda Mining and Exploration Inc. completed programs of geological mapping and dip needle surveying on the area as the Irene, Lulu and Stoff claims of the Farr Lake property.
In 1961, Kamloops Copper Consolidated completed a program of geological mapping and ground magnetic survey on the area as the KW and Rock claims. In 1966 and 1967, Highpoint Mines Ltd. completed a program of geological mapping, trenching and soil sampling on the area as the File, Lee and Sahara claims. Historical trenches were identified at this time. In 1969, Torwest Resources completed a program of soil sampling and a 50.0 line-kilometre ground magnetic survey on the area as the Top property.
In 2000, Highland Valley Mines completed a 160.0 line-kilometre induced polarization survey was completed on the area as the Sku-Leo property.