The Martin occurrence is situated on Carlyle Creek in the Slocan Mining Division. The property is at 1815 metres elevation above sea level.
The Martin group consists of 7 claims located in the upper basin of Dago Creek. The property was located in 1902, and some work was done each year until 1925.
The main workings consist of 2 adits 41 metres apart vertically, and intermediate levels at 20 and 27 metres above the lower adit. No. 1 adit is about 183 metres, and No. 2 adit 44 metres in length, and the intermediate levels total about 110 metres. The workings are connected by raises. Several metres of crosscutting to, and drifting on lodes other than the main lode, has been done on No. 1 level and the intermediate levels.
There has been no record of any work done on this group since 1925.
Regionally, the area lies on the western margin of the Kootenay Arc, in allochthonous rocks of the Quesnel Terrane. In the vicinity of the occurrence, the Quesnel Terrane is dominated by the Upper Triassic Slocan Group, a thick sequence of deformed and metamorphosed shale, argillite, siltstone, quartzite and minor limestone. Rocks of the Slocan Group are tightly and disharmonically folded. Early minor folds are tight to isoclinal with moderate east plunging, southeast inclined axial planes and younger folds are open, southwest plunging with subhorizontal axial planes. The sedimentary sequence has been regionally metamorphosed to lower greenschist facies.
The Slocan Group has been intruded by the Middle Jurassic Nelson intrusions which comprise at least six texturally and compositionally distinct phases ranging from diorite to lamprophyre. The most dominant phase is a medium to coarse grained potassium feldspar porphyritic granite (Paper 1989-5).
The occurrence consists of quartz veins emplaced along a northeast trending fault zone within coarse grained, porphyritic granite of the Nelson intrusions. In the mine workings a narrow band of altered dark micaceous rock (probably an altered mafic dike) follows the main vein. The fault zone and veins dip 65 to 70 degrees northwest. The main vein consists mainly of crushed and altered granite cemented with white quartz, siderite and calcite. Sphalerite and galena with minor pyrite and chalcopyrite are interstitial to the broken granite blocks. The ore, where best developed, was nearly massive galena that ranged from a few centimetres up to 0.6 metre in thickness. The largest shoot, 30 metres long, appeared to plunge 45 degrees southwest. Two other small veins converge eastwards and intersect the main vein in the underground workings. The veins have been explored with two adits and a minimum of 350 metres of drifting.
Production from the Martin occurrence between 1915 and 1924 yielded 101,645 grams of silver, 28,387 kilograms of lead and 1981 kilograms of zinc from 54 tonnes of ore mined.
