The Sweet May showing occurs in the sheared margins of a 10-metre-thick potassium feldspar porphyry sill. Bedding in Helikian Gateway Formation (Purcell Supergroup) carbonates is vertical with a north trend. The showing contains scattered blebs of chalcopyrite and pyrite in thin quartz veins. In general, Sheep Mountain is host to many small quartz veins, some of which contain sulphides.

In 1898, development on the Sweet May was very superficial, consisting of little more than surface cuts. The owner at this time was Frank Sheriff. One surface cut exposed a fair-sized quartz vein, with small quantities of “grey copper”, cutting a bed of quartzite. Another surface cut exposed a 90-centimetre vein of grey and white quartz (possibly) between quartzite and gneiss and containing chalcopyrite with a trace of silver and 2 dollars worth of gold (in 1989).

Refer to Ramshorn (082GSW010), Jennie (082GSW01), Silver King (082GSW028), and Leah (082GSW029) for further information on the Sheep Mountain mineral occurrences.

In 2007, a prospecting and rock geochemistry program was conducted on mineral tenures 372755, 555975, 555976, 555977, 556361, and 557771, near the confluence of the Wigwam and Elk rivers on behalf of owners Robert Morris and Craig Kennedy (Assessment Report 29552). All of the MINFILE occurrences mentioned above, including Ramshorn, Jennie, Sweet May, Leah and Silver King were covered by these tenures, also known as the Wigwam (082GSW096) and Maxiwam (082GSW097) claims. Eight man-days were spent prospecting and collecting rock samples at Sheep Mountain. Over the course of the program 59 rock samples were collected in total.

Refer to Silver King (082GSW028) for further work history information.