Aragonite vs Gypsum
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| Property | Aragonite | Gypsum |
|---|---|---|
| Formula | CaCO3 | CaSO4 · 2H2O |
| Crystal System | Orthorhombic | Monoclinic |
| Mineral Class | 05 Carbonates and Nitrates | 07 Sulfates, Chromates, Molybdates, and Tungstates |
| Mohs Hardness | 3.5-4.0 | 1.5-2.0 |
| Color | Colorless, white, yellow, blue, green | Colorless, white, gray, yellow, brown |
| Luster | Vitreous | Vitreous |
| Streak | White | White |
| Transparency | Transparent | Transparent |
| Cleavage | Poor {010} | Perfect {010} |
| Fracture | Subconchoidal | Conchoidal |