Mineralpedia Details for Ankerite
Ankerite
- Formula
- CaFe2+(CO3)2
- Crystal System
- Trigonal
- Crystal Habit
- Crystalline - Coarse, Massive, Granular
- Cleavage
- Perfect, Perfect, Perfect
- Luster
- Vitreous (Glassy)
- Color
- brown, brownish yellow, gray, gray brown, white
- Streak
- white
- Class
- Trigonal - Rhombohedral
- Fracture
- Sub Conchoidal
- Hardness
- 3.5-4
- WebMineral
- View Ankerite
- Mindat
- View Ankerite
Ankerite from Huancavelica, Peru
Large rhombic 3cm crystals of Ankerite with 2-5mm Tennantite(?) crystals.
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Ankerite from Jeffrey Quarry, Pulaski Co., Arkansas, United States
Dull orange brown, discoidal and rounded, perhaps corroded Ankerite crystals suspended by waterclear Quartz crystals.
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