The King Kong occurrence is located about 70 kilometres east-southeast of the community of Dease Lake.
The prospect lies within a belt of upper Mississippian to Permian ultramafic rocks of the Cache Creek Complex consisting of serpentinized peridotite, dunite and pyroxenite. Sediments in the area include shale, argillite, slate, siltstone, probably of the Mississippian to Triassic Kedahda Formation (Cache Creek Complex). Cache Creek metavolcanics and limestone also occur. Several nephrite bodies occur along a linear trend of just over 1.5 kilometres.
The main nephrite jade occurrence consists of a lens 100 metres long, averaging about 1 to 1.5 metres in width and estimated to contain about 300 tonnes. A 25-kilogram sample was sawed in half and although highly schistose it showed very few fractures. The general appearance was clear (not mottled) with minor white tremolite. Nephrite is also associated with a large mass of white quartz which contains diopside and vesuvianite. Talc is also reported to occur in the ultramafic rocks.
In the vicinity of the nephrite occurrences, malachite, tetrahedrite and magnetite occur at or near the contact of serpentinite and argillite. In 1984, a sample of this material assayed 1.56 per cent copper, 13.8 grams per tonne silver and 0.08 gram per tonne gold (Assessment Report 13262).
The King Kong showings have been prospected intermittently between 1973 to 1985. Nephro-Jade Canada first examined the property in 1973 as the King Kong claims. Cry Lake Jade Mines Ltd. owned the property as the Spring claims and conducted a geological survey in 1979 and a magnetic survey in 1980. Mohawk Oil worked the Spring claims from 1981 to 1985, conducting geochemical, geological and geophysical surveys (induced polarization). In 1984, Mohawk Oil completed geological mapping, rock sampling, and a 31.2 line kilometre induced polarization (IP) survey over their "Spring" claims. In total, 35 rock grab, 8 float, and 2 chip samples were collected and several samples taken along the central ridge assayed anomalous copper and silver values. The IP survey resulted in four main anomalies, interpreted to be related to mineralized contacts based on high chargeability and low resistivity along portions of the ridge. The main IP anomaly was located over the King Kong showing with a northwest trend, length of 1.6 kilometres, and was correlated with lithological contacts and mineralization.
During July and August of 2007, Turnagain River Exploration Ltd. conducted a reconnaissance exploration program over the Turnagain property, consisting of prospecting and heavy mineral concentrate stream sediment sampling over at least seven showings (King Kong, 104I 067; Spring, 104I 110; King Mountain, 104I 108; PR8, 104I 109; PR7, 104I 107; Alice Shea Jade, 104I 104; and Alice Shea Creek, 104I 005).
