Minerals
Frohbergite
frohbergite
FeTe2
Frohbergite: Mineral information, data and localities. — via www.mindat.org · Source
Overview
Frohbergite (German: Frohbergit, title by proper name: Max Hans Frohberg) or iron telluride is a rare hydrothermal mineral from the sulfide class, in composition — iron telluride with the ideal formula FeTe2 (contains 82.05% tellurium and 17.95% iron). Frohbergite occurs in tellurium-rich veins of hydrothermal deposits, sometimes as a thin rim on the periphery of chalcopyrite or as inclusions in native gold, petzite or chalcopyrite. It belongs to the marcasite group and forms a mineral line with mattagamite. Frohbergite most often occurs as fine-grained aggregates.