The SSBG and Gill properties are located immediately south of Okanagan Mission on the Gill Creek FSR. Locally, there are several small quarries for gneissic flagstone and other building stone products. The most productive of these is the Arthon Quarry, 2 kilometres to the north east.

The area is underlain by gneisses of the Shuswap Formation. The Shuswap gneiss is a blue- grey medium- grained, 1 to 2 millimetres, phaneritic metamorphic rock composed of feldspar quartz and biotite or hornblende. Most of these gneisses are massive, irregular or contorted.

Locally, gneisses are banded and split into flagstone and paving stone. The banding in the gneisses strikes east- west and dips gently to the north. The rock has a blue- grey colour with light and dark bands favoured by landscapers. Banding varies from 1 centimetre to 10 centimetres with the 5 and 10 centimetre bands.

In 2005, the gneisses were tested and found to be fissile enough to split out into 10 or 20 centimetre plates and in excess of 45 centimetres in one direction. Stone of these dimensions is marketable to the building stone industry.

In 2006, three separate rock types with ornamental and landscaping uses were identified on the property (Assessment Report 28464):

1.) A hornblende orthogneiss, which is popular landscape wall material. These can be broken into sizes from a half tonne down to 0.20 by 0.25 by 0.40 metre building blocks. The hornblende orthogneiss also breaks into 0.30 metre square by 0.075 metre slabs that are used as paving stone material.

2.) A biotite-granodiorite orthogneiss/schist comes in plates of from 0.30 metres square to 2 metres square. These are used as large landscape cover rocks and as paving stone.

3.) Brick- sized schist and orthogneiss can be found from one end of the property to the other. Feldspar size and quantity can give the material a true pink granite look. This material can be readily palletized as flagstone or wall veneer.