Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. mineral

Anotations

Scope note:

A copper arsenic sulfide mineral found in hydrothermal veins and contact metamorphic sites, usually containing some antinomy and grading into closely related mineral tetrahedrite, in which antinomy takes the place of arsenic. It is a minor ore of copper.