The Mountain M (Meadow) occurrence is located on Meadow Mountain near the head of Mineral Creek, at an elevation of approximately 1950 metres.
The area is underlain by hornblende diorite and quartz diorite of the Jurassic Ruby Range stock, which has yielded a potassium-argon age of 123 million years (Geological Survey of Canada Open File 432). The Ruby Range stock intrudes lightly metamorphosed clastic sedimentary and mafic volcanic rocks of the Triassic Slocan Group.
Locally, a quartz vein or veins, up to 90 centimetres wide, is/are exposed by surface and underground workings over a distance of approximately 400 metres. The veins strike north-south. Mineralization is not described but is assumed to be similar to that of the nearby Shakespeare (MINFILE 082KSW067) occurrence.
In 1958, sampling of trenches, located near the south shaft on the Meadow (L.5862) Crown grant yielded up to 16.4 grams per tonne gold, 92.3 grams per tonne silver and 4 per cent lead over 55 centimetres, whereas a trench sample, located north of the north shaft on the Mountain M (L.3.604) Crown grant, assayed 21.5 grams per tonne gold, 54.7 grams per tonne silver and 6.4 per cent lead over 35 centimetres (Property File - F.C. Buckland [1958-06-01]: Report on the Promistora Group of Mineral Claims).
The area has been explored since the early 1900’s with the development of a number of surface trenches, two shafts and tunnels and a drift. In 1949 and 1950, Promistora Gold Mines completed programs of geological mapping, prospecting and sampling. A bulk shipment of ore was reportedly shipped to eastern Canada at this time but no records of the shipment exist. Between 1967 and 1973, bulldozer stripping, soil geochemical and geophysical (VLF-EM and magnetic) surveys were completed. In 1987, 8.2 kilometres of magnetic and VLF-EM surveys were completed and 376 soil samples were collected. In 1988, magnetic and VLF-EM surveying (1.8 kilometres), road building (0.2 kilometre), trenching (357.8 metres) and channel sampling (76 samples) were completed on the property.
