Arsenopyrite is the most common arsenic mineral, once known as arsenical pyrites. Its color is silver-white to steel-gray on freshly broken surfaces. It yields a garlic odor when heated and the fumes can be toxic. It may tarnish to form an iridescent layer. Although it has a reputation for being poisonous to humans, complex arsenic compounds are used in the treatment of disease caused by microorganisms.
- Optical Properties
- Characteristic Physical Properties
- Chemistry & Crystallography
Countries of Origin
Ecuador; Russian Federation; Republic of Kosovo; Czechia; Japan; United States of America; Portugal; Bolivia (Plurinational State of); Spain; Canada; Unknown; Norway; China; Ireland; Italy; Mexico; France; Peru
Arsenopyrite is brittle so please take care when handling. Wash hands after handling and do not lick or ingest.