Mapping and prospecting during phase two also discovered numerous other mineralized veins elsewhere within the Granite Creek drainage.The largest of these veins is up to two metres wide and is intermittently exposed for 75 m along strike, on the western side of the Granite Creek basin.This vein hosts patchy massive and semi-massive arsenopyrite, galena and jamesonite
.Assays from the phase two sampling are pending.
Stage 4 is marked by a mineral assemblage composed of quartz + antimony-lead-silver sulfosalt minerals (Figure 4(r)) that prevailingly include boulangerite and jamesonite
, as well as minor bournonite, tetrahedrite, and andorite.
They can be weakly mineralized in places with arsenopyrite, pyrite and rare jamesonite
and boulangerite in a quartz gangue.
Gold mineralization in the 2004 Phase 1 drill holes was in the form of fine grained and visible free gold associated with quartz veins, stockworks and quartz rich shear zones containing between 1 percent to 3 percent pyrite, arsenopyrite and jamesonite
In the Keyue deposit, the ore minerals include sphalerite, galena, pyrite, arsenopyrite, chalcopyrite, tetrahedrite, freibergite, boulangerite, jamesonite
, bournonite, and stibnite; the gangue minerals are mainly Mn-Fe carbonate, quartz, and calcite (Figures 4-6); and the supergenesis generates the minerals that prevailingly include ferrohydrite, sardinianite, valentinite, malachite, and siliceous sinter (Figure 7).
Among the generous number of photographs there are photomicrographs, including SEM images, imparting exquisite close-ups of oriented inclusions, striations, faden lines, jamesonite
rings and cylindrite cylinders, and all manner of other micropheomena.
A vug in the footwall of the Contacto vein, on Level 250, yielded brilliant crystals of arsenopyrite, wolframite, jamesonite
and bismuthinite perched on spongy quartz.
Other collectible species include: native silver, pyrargyrite, argentiferous tetrahedrite, freibergite, sphalerite, galena, quartz, siderite, pyrite, marcasite, boulangerite, jamesonite
, acanthite, cerussite, hawleyite (type locality), barite and anglesite.
Scheelite, tetrahedrite, cassiterite, pyrrhotite and fibrous sulfosalts including jamesonite
and boulangerite are locally important and have been collected specifically for their specimen value.
Some fluorite crystals appear blue-green and have a matte luster; a close inspection of these reveals inclusions of countless hairlike crystals of jamesonite
. Once in a while, irradiated specimens of Yaogangxian fluorite are offered.