Enargite

A superb cluster of metallic luster crystals , some with and the large one without striations. Rare old material purchased by Marty in 2009 from Western Minerals (both labels included).Any decent Butte material is tough to find, so grab this one quick!!! Ex Martin Zinn Collection

Locality: Leonard Mine, Silver Bow County, Butte Montana

Composition: Copper arsenic sulfosalt