The LLL showing occurs to the west of the Chilcotin River in an area underlain by rocks of the Carboniferous to Jurassic Cache Creek Group, overlain by mafic to intermediate volcanics of possibly Jurassic age. The Cache Creek Group has been subdivided into two belts, a western, mainly volcanic belt and an eastern belt dominated by sedimentary rocks. The showing occurs in the area underlain by eastern belt rocks. Intruding the Cache Creek Group to the west of the showing are granodiorite and quartz diorite of the Upper Paleozoic Farewell pluton, and to the north leucocratic quartz monzonite of Upper Paleozoic or Mesozoic age.

The LLL showing itself comprises pyrite and pyrrhotite in argillaceous sediments of the Cache Creek Group and minor disseminated chalcopyrite in fractured younger volcanic rocks. Abundant fracturing and faulting in the area is possibly related to movement on the McEwen fault, a major northwest striking structure to the north and east of the showing. Hydrothermal alteration is best developed within fracture zones and comprises sericitization and clay alteration. Limonitic zones are probably the result of the weathering of pyrite.

An assay of 368 grams per tonne silver was obtained from a sludge sample collected during diamond-drilling on the property carried out in 1969 or earlier (George Cross News Letter No.276, Dec. 16, 1969).