Crystals of tetrahedrite up to 2.2 cm in size forming a cluster (3.5 × 2.5 × 2.5 cm) with quartz and micro mimetite. Found from Black Pine mine, Granite County, — Photo: Ivar Leidus · CC BY-SA 4.0
Tetrahedrite
Also known as: Fahlore.
A copper-antimony sulfosalt — the 'gray copper ore' — a common tetrahedral-crystal sulfide mined for silver and copper.
Intro adapted from Wikipedia (CC BY-SA).
Tetrahedrite is a mineral group, with the chemical formula (Cu,Fe)₁₂Sb₄S₁₃.
It crystallizes in the cubic crystal system.
Key properties: Mohs hardness 3–4.5; typically gray or black.
Collections: Metals & Native Elements, Collector Favorites.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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