Pyrite - P2.75

Pyrite in Calcite, Michigan

5.5" / 2.75 lbs

Pyrite is a brass-yellow mineral with a bright metallic luster. It has a chemical composition of iron disulfide (FeS2) and is the most common sulfide mineral. It forms at high and low temperatures and occurs, usually in small quantities, in igneous, metamorphic, and sedimentary rocks worldwide. This highly-collectible specimen contains a rare combination of Pyrite in Calcite, which glows red-orange under a shortwave light. Locality: Hiawatha No. 2 Mine, Stambaugh, Menominee Iron Range, Iron Co., Michigan.