The Diamond E (Lot 543) occurrence is located between elevations of 2286 to 2438 metres on the east side of the east fork of Carbonate Creek, approximately 2 kilometres south of Bobbie Burns Creek and 32 kilometres south of Golden.
The area is underlain by metasediments of the Hadrynian Horsethief Creek Group.
Locally, small lenticular quartz veins mineralized with argentiferous galena and tetrahedrite are hosted grey slate and buff grit (Minister of Mines Annual Report 1967, page 266).
In 1981, sampling on the BB-5 claim, which roughly covers the Diamond E (L.543) Crown grant, identified an orange-weathered dolostone hosting fine-grained galena-sphalerite mineralization over a strike length of approximately 1 kilometre. Samples yielded greater than 1 per cent combined lead-zinc (Property File - Mountain Star Resources Ltd. [1997-09-09]: Geological Evaluation and Exploration Potential of the Vermont Project Mineral Claims)
In 1966, Westgate Mines prospected and sampled the area as the Bend claims. In 1979, Norcen Energy Resources Ltd. optioned the holdings of Cochrane Oil and Gas Ltd. between Vermont and Warren Creeks and carried out a program of geological mapping, prospecting, geochemical soil sampling, geophysics and diamond drilling. In 1980, Norcen continued to work on the same area with a program of geological mapping, regional and detailed geochemistry, geophysics and diamond drilling. In 1982 and 1983, additional programs were carried out on these claims by Cochrane Oil and Gas and Bluesky Oil and Gas Ltd., including diamond drilling. In 1979 and 1980, the First Nuclear Corporation staked a substantial number of claims, from McMurdo Creek at the north end to the northern boundary of the Cochrane ground just north of the Ruth Vermont Mines, following the results of a 1979 stream sediment geochemical survey. Field work in 1980 included geological mapping, prospecting and geochemistry. In 1981, the First Nuclear Corporation continued exploration of the DEB claims with geological mapping, sampling and prospecting. At the end of this program the size of the claim group was reduced to 376 units covering the favourable and anomalous stratigraphy. In 1982, MineQuest Exploration Associates Ltd., working on contract to Samim Canada Ltd., further explored the DEB claims, principally through geological mapping, prospecting, reconnaissance soil geochemistry, mostly on widespread contour lines, and rock-sampling and trenching. In 1983, work by Samim saw 7.7 kilometres of IP surveys completed; a total of 493 metres drilled in 11 BQ holes; and 1096 soil, 227 rock and 27 silt samples collected. In 1997, Mountain Star Resources Ltd. conducted a property examination on the area as the VMT and BB claims.
