Product Description

Rock Type:  Coarsely-banded sphalerite with lesser pyrite and chalcopyrite within hydrothermal quartz

Location:  Columbia

Description:  Sulphide-rich regions are ultra fine-grained hydrothermal quartz. Occasional inclusions of galena occur in sphalerite.  Electrum is common as inclusions in the sulphides.  The rock was studied for its gold-silver potential.