The prospect occurs at the southern end of the Buttle Lake Uplift, southeast of Big Interior Mountain. The geology of the uplift is presently undergoing revision and assignment of host rocks to their proper group or formation may not be possible (see 092F 330 for revised uplift stratigraphy).

The area is underlain by andesite, siliceous and tuffaceous sediments of the Devonian to possibly Mississippian or Pennsylvanian Sicker Group and granitic rock of the Early to Middle Jurassic Island Plutonic Suite. A batholithic contact occurs more than 1.5 kilometres from the workings.

Shafts have been sunk and open cuts made on nearly all the outcroppings of the deposit. The workings show that the mineralization occurs in fractures or contacts between bodies of granite and andesite. A well defined fissure, averaging about 1.2 metres in width, strikes north across a low ridge and dips about 68 degrees west. Quartz vein material fills the fissure and ranges from a few centimetres up to about 40 centimetres. The vein has been traced on surface for over 900 metres. It is mineralized with pyrite, chalcopyrite, galena and sphalerite. Narrower fissures filled with quartz and similar in nature to the main vein also occur.

Samples of fissure-filled material assayed as high as 44.57 grams per tonne gold over 30 centimetres. A more typical assay value would be 5.49 grams per tonne gold which was obtained from a 56 centimetre wide sample (Bulletin 13). Silver values are generally below 34 grams per tonne, but samples have been found to contain up to 147.43 grams per tonne (Hemsworth, 1938). Five tonnes of ore was shipped from the property in 1906, from 1,337 grams of gold was produced (Mineral Policy data).

Joe Drinkwater discovered the prospect in 1899 and, with Alvin Engvik, worked it until 1915.