mineral
Pale green rough mineral fragment, possibly green calcite
Calcite (CaCO₃), tentative identification
AI-generated identification · may be incorrectTranslucent pale green-white fragment with a dull to vitreous luster and irregular cleavage surfaces. If calcite, hardness is 3 Mohs and crystals are trigonal; the image alone does not confirm the mineral.
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Physical properties
Translucent pale green-white fragment with a dull to vitreous luster and irregular cleavage surfaces. If calcite, hardness is 3 Mohs and crystals are trigonal; the image alone does not confirm the mineral.
Formation & geological history
Calcite commonly forms in sedimentary settings, hydrothermal veins, and cavities in igneous rocks; it occurs from many geological ages. This small fragment’s source cannot be determined visually.
Uses & applications
Calcite is used in cement, lime, and construction aggregate; attractive translucent pieces are collected or occasionally used decoratively.
Geological facts
Calcite effervesces in dilute acid and is readily scratched by a copper coin—useful checks when distinguishing it from harder green minerals.
Field identification & locations
The pale color and apparent cleavage are consistent with calcite, but identification needs simple tests such as hardness and acid reaction. Calcite is widespread worldwide.
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