Celestite
Celestite is a mineral with the chemical formula SrSO4. It has a Mohs hardness of 3 to 3.5 and vitreous to pearly luster.
Celestite properties
| Type | Mineral |
|---|---|
| Chemical formula | SrSO4 |
| Mohs hardness | 3 to 3.5 |
| Luster | Vitreous to pearly |
| Typical colors | Typically blue, but can also be colorless, white, gray, or yellow |
| Formation | Precipitated from sulfate-rich waters, often in sedimentary environments |
| Rarity | 6 / 10 |
Mohs hardness 3–3.5 — soft
1 · Talc5 · Apatite10 · Diamond
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