Properties
| Category | Carbonate minerals |
|---|---|
| Formula | CaCO3 |
| Crystal system | Orthorhombic |
| Color | Can come in a variety of colors, but commonly red or white |
| Crystal habit | Commonly dendritic or pseudo-hexagonal; can also be acicular, tabular, prismatic, coral-like |
| Cleavage | Good on , Poor on {110}. |
| Fracture | Subconchoidal |
| Tenacity | Very brittle |
| Mohs scale hardness | 3.5–4 |
| Luster | Vitreous, waxy, resinous |
| Streak | White |
| Diaphaneity | Transparent to opaque |
| Specific gravity | 2.94 |
From the Wikipedia article
Aragonite is a carbonate mineral and one of the three most common naturally occurring crystal forms of calcium carbonate, the others being calcite and vaterite. It is formed by biological and physical processes, including precipitation from marine and freshwater environments.
Source
Source record: crystal-compendium/aragonite/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Aragonite — revision id 1377541022. Text and properties from Wikipedia, licensed CC BY-SA 4.0.