The Grizzly 4, 13 occurrence is located on the west side of Sheslay River, opposite Kaketsa Mountain, about 56 kilometres northwest of the community of Telegraph Creek.

The copper showing occurs near the contact of a north-northwesterly trending tongue of the Late Triassic Kaketsa pluton with Upper Triassic Stuhini Group volcanic and related sedimentary rocks. Pyrite with minor chalcopyrite is localized along shears/fractures in volcanic rocks.

The volcanic rocks are mainly porphyritic flows with lesser tuffs and tuffaceous siltstones. The flow rocks form massive units and are grey to dark green andesitic to basaltic porphyries with phenocrysts of augite and hornblende. The Kaketsa pluton is an elliptical intrusion 4 by 5.6 kilometres in diameter. Hornblende gave a K-Ar date of 218 +/- 8 million years (Geology, Exploration and Mining in British Columbia 1972, page 548). The core of the pluton is medium to coarse grained, equigranular quartz diorite or granodiorite.

From 1960-64, the Kid 1-12 claims were held by Kennco Explorations (Western) Limited and work included geophysical and geochemical surveys, and diamond drilling of four packsack holes totalling 47 metres. The Kid and Grizzly 1-20 claims were held by the Colorado Corporation in 1970 and work during the year included geological mapping, a geochemical soil survey, trenching, and sampling. Cobre Exploration Limited, incorporated December 1971, acquired the Grizzly 1-20 and Kid 1-15 claims in the Red group from Edward Asp and associates by an option agreement dated January 1972. Work during the year included geological mapping, a magnetometer survey over 12 kilometres, and a geochemical soil survey (104 samples). The option agreement was transferred in February 1974 to Ducanex Resources Limited and Brascan Resources Limited. During 1974, Ducanex and Brascan carried out a time-domain induced potential survey over 6 line-kilometres covering the Grizzly 5-10, 15, 17, 19 claims, and 580 metres of diamond drilling in 3 holes on the Grizzly 5, 8, and 10 claims. In 1988, Corona Corporation conducted prospecting over the Shell 1-4 claims which cover the Kid (104J 004) and Grizzly 4, 13 showings. In total, 49 samples were collected; 46 rock and 3 silt. A 1989 work program was contracted by Equity Engineering Ltd. for Corona Corporation and grid lines totalling 39 kilometres were cut and marked, from which 1307 soil samples were collected. Concurrently, limited prospecting yielded 21 rock samples. In 2011, Garibaldi Resources Corp. completed a follow up soil sampling program consisting of 201 samples (Kid, 104J 004), and detailed 3D geological modeling in the area of the Grizzly prospect.

See Grizzly West for all further updates. This showing