Calcite is a crystalline form of calcium carbonate, . Its structure differs from other calcium-carbonate polymorphs despite identical chemical composition.
Calcite is optically anisotropic: light propagation depends on direction and polarization relative to the crystal. Its familiar double-refraction effect connects macroscopic optical observations with an ordered atomic structure.
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Calcite is a carbonate mineral composed of calcium carbonate (CaCO₃). It is one of the most abundant minerals on Earth's surface and has a wide range of forms and occurrences. Here are some key features and facts about calcite: 1. **Crystalline Structure**: Calcite crystallizes in the trigonal system, and its crystals can appear as rhombohedra, scalenohedra, or as massive, granular forms.
