mineral
Aragonite
Aragonite (CaCO3)
AI-generated identification · may be incorrectHardness of 3.5 to 4 on the Mohs scale, typically brown, white, or yellowish, with a vitreous to resinous luster and distinct pseudo-hexagonal crystal twinning.
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Physical properties
Hardness of 3.5 to 4 on the Mohs scale, typically brown, white, or yellowish, with a vitreous to resinous luster and distinct pseudo-hexagonal crystal twinning.
Formation & geological history
Forms in low-temperature environments including caves as stalactites, oxidized zones of ore deposits, and marine evaporation settings.
Uses & applications
Used primarily as mineral specimens for collectors, in ornamental carvings, and occasionally in holistic wellness practices.
Geological facts
Aragonite is chemically identical to calcite, but its crystal structure is orthorhombic rather than trigonal, making it less thermodynamically stable over geological time.
Field identification & locations
Identified by its characteristic cluster habit, effervescence in dilute acid, and lower hardness; commonly sourced from Morocco, Spain, and the USA.
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Sandstone (with potential mineral staining/concretions)
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Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
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Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
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