#ancherit
- Ankerite — A mineral belonging to the carbonate class, consisting of a natural calcium, magnesium, iron, and manganese carbonate, isomorphic with dolomite. It crystallizes in the rhombohedral system, typically presenting a white, gray, yellowish, or brown color (upon weathering) and a vitreous to pearly luster. It is frequently found as a gangue mineral in hydrothermal veins associated with ore deposits.