Altaite is also associated with gold and silver and several gold and silver sulfides and tellurides such as nagyagite , sylvanite , calaverite and hessite . Altaite is a telluride mineral, a special group of minerals to collectors. The fondness of tellurium for the precious metals of gold, silver and copper is quite obvious in the preceding list. The lead telluride altaite is a very unique mineral. Luster is metallic.
Crystals are opaque.
Hardness is 2.5 - 3. Streak is black. Associated Minerals include gold , silver , pyrite , nagyagite , sylvanite , calaverite , tetrahedrite , hessite , petzite , coloradoite , volynskite , sphalerite , rucklidgeite , tellurium , tetradymite , galena and other sulfides .