The Bon 20 showing is located on a ridge in the southern head waters of Friendly Creek, a tributary of the Bonanza River, north of the Nimpkish River. It is one of several which occur along a 1.2 kilometre mineralized zone striking about 285 degrees (the Bon 20 represents sample 2155 in Geology, Exploration and Mining 1970, page 274).

The area is underlain by basalts and andesites with minor interbedded limestone of the Upper Triassic Vancouver Group, Karmutsen Formation. Granodiorite of the Upper Jurassic Nimpkish batholith, which is part of the Jurassic Island Plutonic Suite, intrude the Karmutsen Formation volcanics. Locally, the granodiorite is epidote altered.

Locally, a band of massive magnetite in silicified volcanic rocks is exposed for about 150 metres. Enclosing rocks are variably skarn altered with localized massive epidote containing disseminated pyrite and galena. At the easternmost exposure, the massive magnetite band averages 3.6 metres in width and dips near vertical.

Work History

During 1968 through 1970, Brettland Mines completed programs of prospecting, geological mapping, soil sampling, ground and airborne magnetometer surveys and 13 diamond drill holes, totalling 334.2 metres, on the area as the Bon claims. In 1980, Vanstates Resources completed a program of soil sampling on the area as the Big Mac claims. During 2007 through 2013, Homegold Resources completed programs of rock and soil sampling, air photo geological interpretation and a ground magnetometer survey on the area as the Bonanza River property. In 2018, Hawkeye Gold and Diamond Inc. completed a minor program of prospecting and rock sampling on the area as the Bonanza property.