The E-D 1 claims, owned by Manto Mining Corporation, are located approximately 500 metres south of the southern contact of the Baldy batholith in the headwaters of Birk Creek. The showings were discovered in 1995 by Wayne Tyner, and have received limited mapping, hand trenching, sampling, and geophysical surveys. Three holes were drilled in 1997, but no logs or assays are available.

The mineralization occurs at the contact between a grey limestone unit and an underlying green and pink-banded rock, interpreted to be calc-silicate-altered sediments. Regionally, these rocks are mapped as Mississippian-aged Unit EBPl of the Eagle Bay Assemblage and the faulted contact with basalt of the Fennell Formation (Slide Mountain Terrane) occurs a few hundred metres to the west. The Gossan 1 and 2 showings consist of stratabound pods of partially oxidized, massive pyrrhotite with lesser pyrite, chalcopyrite and sphalerite. They are up to 2 metres thick and several metres in length and dip moderately to the southwest. Three surface grab samples indicates that the sulphides contain significant gold (to 3300 ppb), bismuth (to 377 ppm), copper (to 1348 ppm), zinc (to 1537 ppm), and tungsten (to 1487 ppm) values and are also weakly anomalous in silver, cadmium, molybdenum, selenium, and tellurium (Fieldwork, 1999, pages 210, 211).

The stratabound sulphide mineralization has the appearance and characteristics of a manto-style deposit. The metal assemblage of gold-copper-zinc-tungsten-bismuth with anomalous tellurium and molybdenum, combined with proximity to the Baldy batholith and the presence of weakly calc-silicate altered rocks in the footwall suggest that mineralization formed by replacement of limestone adjacent to the batholith.