The Holt 1-15 occurrence is located in the northern head waters of Koksilah River, approximately 2.3 kilometres north of Tadjiss Lake.

The claims are underlain by Paleozoic Sicker Group and Buttle Lake Group volcanics and sediments exposed in a north west trending syncline. The basal Devonian Nitinat Formation (Sicker Group) forms a sequence of volcanics, volcaniclastics and minor sediments that have undergone pervasive epidotization. Overlying these are pillowed, amygdaloidal and massive basalts correlated with the Nitinat to Fourth Lake Formations transition (possibly Duck Lake Formation, Sicker Group). Epidotization and hematization are common, with minor malachite along fractures. The basalt is overlain by bedded jasper, chert and argillite with minor limestone. The jasper is commonly crosscut by quartz veinlets hosting pyrite, chalcopyrite, and magnetite. The matrix commonly hosts specularite. The Mississippian to Pennsylvanian Fourth Lake Formation (Buttle Lake Group) overlies the Nitinat rocks and is comprised of well-bedded chert and tuff.

These Paleozoic rocks are intruded by diorite of the Early to Middle Jurassic Island Plutonic Suite (formerly Island Intrusions) and a series of diabase dikes related to the Upper Triassic Karmutsen Formation (Vancouver Group). Epidote veining, as well as quartz veining hosting chalcopyrite and pyrite with some malachite, accompanies the epidotization. Skarnification of layered tuffs adjacent to the intrusive is common.

Locally, mineralization, as exposed in Trench 1, consists of fine-grained pyrite, occurring as disseminations or in bands up to 3 centimetres wide, in intensely silicified mafic volcanic rocks.

Work History

In 1987, Nexus Resources and Goldenrod Resources completed a program of geochemical sampling, geological mapping and trenching on the Holt 1-15 claims. Samples assayed between 0.02 to 0.22 gram per tonne gold. One sample returned 1.14 grams per tonne gold and 3.4 grams per tonne silver (Assessment Report 16059). Pyritic float boulders, found in the area of the trench, assayed up to 15.09 grams per tonne gold and 11.2 grams per tonne silver (sample 4471; Assessment Report 16059).

A black, argillaceous chert hosting disseminated pyrite assayed 0.26 gram per tonne gold, 1.0 gram per tonne silver, 0.26 gram per tonne gold, 0.013 per cent copper, 0.004 per cent lead and 0.0125 per cent arsenic (sample 4701; Assessment Report 16059).

In 2006, D. Herriott completed a program of prospecting on the area as the Silver Nugget claims.

In 2018, Island Time Exploration Ltd. completed a program of geological mapping, prospecting, geochemical (soil, silt and rock) sampling and an airborne magnetometer survey on the area as the Holt property. A rock sample (IS-HOLT-002) assayed 11.3 grams per tonne silver and 0.808 per cent copper (Carpenter, T.H. (2018-12-31): Technical Report on the Holt Property with Recommendations for Further Exploration).