
mineral
Banded Calcite
Calcium Carbonate (CaCO3)
Hardness: 3 on Mohs scale; Color: Cream, white, and grey banding; Luster: Vitreous to pearly; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral.
- Hardness
- 3 on Mohs scale
- Color
- Cream, white, and grey banding
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 3 on Mohs scale; Color: Cream, white, and grey banding; Luster: Vitreous to pearly; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral.
Formation & geological history
Formed by the precipitation of calcium-rich waters in caves, hot springs, or through hydrothermal veins. The banding represents different stages of mineral growth and changing chemical impurities.
Uses & applications
Used primarily for ornamental purposes, home decor, metaphysical collecting, and as a source of lime in chemical industries.
Geological facts
Calcite is one of the most common minerals on Earth. It is famous for its double refraction property, where light passing through it splits into two rays.
Field identification & locations
Identified in the field by its softness (can be scratched by a copper coin) and its strong effervescent reaction to cold dilute hydrochloric acid. Commonly found in limestone caves and vein deposits.
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Nephrite Jade
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Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
Green Apatite on Albite
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mineral