Four parallel quartz veins, 0.3 to 1 metre wide, strike southeast and dip moderately northeast to steeply southwest. The host rock is medium to thickly bedded tuffs of the Lower Jurassic Telkwa Formation (Hazelton Group), which are weak to moderately foliated. The veins contain shattered pyrite and lesser amounts of chalcopyrite, arsenopyrite, sphalerite and galena. Assays across the main vein (61 centimetres) run 87.8 grams per tonne gold and 190.7 grams per tonne silver (Gaul, 1922). Recent (1987) grab samples run 94.6 grams gold per tonne.

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                    FIELDWORK 1986, pp. 201-222
                   TABLE 10 - GEM VEIN ANALYSES
                 (all values in parts per million)
         Au   Ag     Cu    Pb     Zn  Co  Ni  Mo   Cd   Hg     As   Sb   Ba
110A   35.0   88   7300  1700  70200   8   9   6   <1  4.3    705  117   38
110B    8.2  <10    770   192    185   8  13  12   28  0.5    100   <3  100
110   136.0  600  31300  6100  40000   7  10  12  580  2.6  13800  345   44
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Work History

In 1985, Canadian United Minerals Inc followed up on Noranda's geochemical/geological program with two drill holes on the Hawk-Gem vein.

In 2000, Guardsman Resource sampled at least 13 vein showing/zones including the Gem. In 2006, In 2006, operator Christopher James Gold Corporation collected 68 rock samples in total from 12 different zones including Gem (093L 285), Raven (093L 281), Ptarmigan (093L 283), Jane and Chisholm (093L 279), Hawk (093L 282), Cabin (093L 275), Hoopes (093L 280), Free-Gold (093L 023), Marjorie (undocumented) and South (undocumented). In 2000, Gem vein samples gave assays ranging up to 128 grams per tonne gold (Assessment Report 26532).

Refer to Dome Mountain (Boulder vein) (093L 276) for related details and a complete Dome Mountain property work history.