The Loch showing is located 23 kilometres west-southwest of Vernon, on the steep south side of Whiteman Creek Valley.

In this area, Devonian to Triassic sedimentary and volcanic rocks of the Harper Ranch Group are intruded by Middle Jurassic granitic rocks of the informally named Terrace Creek batholith. An Eocene Coryell quartz latite porphyry to syenite, high-level plug intrudes and is in fault contact with the Middle Jurassic intrusions. Eocene Penticton Group volcanic rocks overlie the igneous and sedimentary rocks.

Altered Middle Jurassic quartz monzonite hosts molybdenum mineralization. Molybdenite occurs with pyrite in fractures and quartz veinlets (1 to 5 centimetres) in a 400 by 200 metre area. Alteration minerals include sericite, chlorite, kaolin and epidote.

In 1979-80, Cominco Ltd. carried out geological mapping and soil geochemistry. During 2014 through 2016, the area was held and explored by Ximen Mining Corp. as the Brett Gold property and a complete summary of exploration work can be found at the Brett (MINFILE 082LSW110) occurrence.