Aragonite vs Copper
| Property | Aragonite | Copper |
|---|---|---|
| Formula | CaCO3 | Cu |
| Crystal System | Orthorhombic | Cubic (Isometric) |
| Mineral Class | 05 Carbonates and Nitrates | 01 Native Elements |
| Mohs Hardness | 3.5-4.0 | 2.5-3.0 |
| Color | Colorless, white, yellow, blue, green | Copper-red, tarnishes to brown/green |
| Luster | Vitreous | Metallic |
| Streak | White | Copper-red |
| Transparency | Transparent | Opaque |
| Cleavage | Poor {010} | None |
| Fracture | Subconchoidal | Hackly |