Product Description

Rock Type:  Hydrothermal quartz with coarse bands of sphalerite and chalcopyrite

Location:  Columbia

Description:  Coarse bands of sphalerite-pyrite with lesser chalcopyrite and coarse clusters of pyrite within multistage hydrothermal quartz.  This sample contains a remarkable abundance of gold and silver telluride minerals, sylvanite, (Au,Ag)2 Te4, and possibly muthmanite, AuAgTe2, petzite, Ag3AuTe2 and hessite, AgTe2, predominantly as inclusions in pyrite. The rock was studied for its gold-silver potential.