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Carbonates

Carbonates are very common minerals of non-metallic appearance, mostly light in color, easily soluble in acids (calcite and aragonite even in the cold). They are divided according to various aspects, for example, they can be distinguished in a simplified way. More info

Carbonates are very common minerals of non-metallic appearance, mostly light in color, easily soluble in acids (calcite and aragonite even in the cold). They are divided according to various aspects, for example, they can be distinguished in a simplified way

1. hexagonal carbonates, characterized by conspicuous rhombohedral fission and which include calcite, dolomite, magnesite, ankerite (dolomite), siderite, rhodochrosite, smithsonite, etc. Their cations often represent each other;

2. rhombic crystal system with less pronounced prismatic cleavage, represented mainly by aragonite, witherite, cerusite, etc. and

3. basic carbonates - malachite, azurite. Carbonates are formed in various conditions, mostly of sedimentary origin (limestone, dolomites), many of them are formed by hydrothermal processes and also during weathering (Pb, Cu, Zn, etc. carbonates). By evaporating the brines in tropical or desert conditions, various hydrated carbonates crystallize.

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