Properties
| Category | Carbonate mineral |
|---|---|
| Formula | MgCO3 |
| Crystal system | Trigonal |
| Color | Colorless, white, pale yellow, pale brown, faintly pink, lilac-rose |
| Crystal habit | Usually massive, rarely as rhombohedrons or hexagonal prisms |
| Cleavage | perfect |
| Fracture | Conchoidal |
| Tenacity | Brittle |
| Mohs scale hardness | 3.5–4.5 |
| Luster | Vitreous |
| Streak | white |
| Diaphaneity | Transparent to translucent |
| Specific gravity | 3.0–3.2 |
From the Wikipedia article
Magnesite is a mineral with the chemical formula MgCO3. Iron, manganese, cobalt, and nickel may occur as admixtures, but only in small amounts. Magnesite occurs naturally in both cryptocrystalline and crystalline forms depending on the conditions of formation.
Source
Source record: crystal-compendium/magnesite/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Magnesite — revision id 1373415195. Text and properties from Wikipedia, licensed CC BY-SA 4.0.