The UPPER PERIDOTITE showing is located in the headwaters of Peridotite Creek, within the Shulaps Range southwest of Yalakom River, approximately 53 kilometres northwest of Lillooet, B.C.

This showing is part of a low-grade nickel, cobalt, chromium trend in the Shulaps Ultramafic Complex, with anomalies extending from Retaskit Creek in the south to Blue Creek in the north. Consistently anomalous nickel values and sporadic gold values were initially documented by International Corona Corp. in the late 1980s during reconnaissance mapping, prospecting and stream sampling (Assessment Reports 18690, 19599, 21628).

From 2008 to 2010, Crucible Resources Ltd. conducted reconnaissance programs of prospecting, rock chip and float sampling across their Shulaps Project area between Retaskit Creek and Blue Creek. Metallurgical testing was also done on selected samples. Surface samples gave consistently high values for nickel in ultramafic rocks ranging from 0.17 to 0.33 per cent and cobalt averaging 0.01 per cent (Assessment Reports 30145, 30616, 31601). In the upper Peridotite Creek area, seven chip and grab samples of weathered peridotite ranged from 0.15 to 0.30 per cent nickel and averaged 0.01 per cent cobalt (Samples CR80907-1 to CR80907-7). Metallurgical testing results showed that the best potential for developing a viable nickel recovery process appears to be in the use of acid leaching.

In 2012 and 2013, 2313245 Ontario Inc. conducted a broad program of rock geochemical sampling, with many samples returning values of 0.2 to 0.3 per cent nickel and similar chromium (Assessment Report 34196). The Davis Tube Recovery (DTR) method was investigated to calculate magnetic recoverable nickel. The six out of 45 tested samples containing a greater than 0.05 per cent DTR extend over a significant distance of greater than 4.5 kilometres.

Crucible's work continued in 2022, with geochemical sampling of seven rocks from the Blue Creek and Peridotite Creek areas. Five samples showed elevated nickel values between 0.18 and 0.24 per cent. Two metallurgical tests on rusty harzburgite rocks collected previously from the Peridotite Creek area, achieved significant levels of nickel extraction from silicate matrices (Assessment Report 41105).