The Zuni prospect is located at 2195 metres on the ridge crest that divides the Robb and Stenson creeks drainages. The former Texas (082KSW016) and Jackson (082KSW015) mines are to the east and west a short distance, respectively. Kaslo, British Columbia lies 12 kilometres to the east-southeast.

The prospect is mainly underlain by shaly limestones and slates of the Triassic Slocan Group. These strata are intruded by quartz porphyry dikes.

A vein was exposed by shallow surface workings on the Zuni claim and was worked many years prior to 1935. At that time it is reported that a 95-metre tunnel was driven in an easterly direction, 37 vertical metres below the surface exposure. It was hoped that the underground extension of the vein would be intersected but working fell short of this objective. A second attempt was made in 1933 by L.N. Garland without success.

No records could be found providing a geological description of the vein or mineralization on the Zuni prospect. There may be some similarity in mode of occurrence and mineralization style to the former Jackson and Texas mines, therefore a brief geological description of these is provided in the following paragraphs.

At the former Jackson mine, the main lode, the Jackson lode, is defined as a vein-fissure. The lode generally strikes 075 to 085 degrees but changes over its exposed length to 340 degrees, nearly conforming to bedding. Overall, the lode dips 40 degrees easterly. Ore minerals include galena, sphalerite, chalcopyrite and pyrite in a matrix of siderite, quartz and brecciated basic dike hostrock. Blebs and irregular streaks of mineralization were up to 25 centimetres wide, occurring next to the hangingwall. Most commonly, a near-solid band of sphalerite, 5 to 60 centimetres wide followed closely along the footwall. Overall, the lode is well defined.

A number of other vein exposures were found on the Dublin Queen Crown grant and the adjoining Corrigan occurrence (082KSW014).

The Texas lode has a strike of 120 degrees and a dip of 69 degrees southwest. The maximum thickness is 1.2 metres. Mineralization consisted of minor sphalerite and a little galena in quartz and calcite. Clean galena formed small, irregular pockets.