WEIGHT : 12.93 GR
SIZE : 4.8 x 2.9 x 0.6 cm
Chrysocolla has a cyan (blue-green) color and is a minor ore of copper, having a hardness of 2.5 to 7.0. It is of secondary origin and forms in the oxidation zones of copper ore bodies. Associated minerals are quartz, limonite, azurite, malachite, cuprite, and other secondary copper minerals. It is typically found as botryoidal or rounded masses and crusts, or vein fillings.
A 2006 study has produced evidence that chrysocolla may be a microscopic mixture of the copper hydroxide mineral spertiniite, amorphous silica and water
| Color | Blue, cyan (blue-green), green, blackish blue to black, or brown and rarely yellow |
|---|---|
| Crystal habit | Massive, nodular, botryoidal |
| Cleavage | none |
| Fracture | Irregular/uneven, sub-conchoidal |
| Tenacity | Brittle to sectile |
| Mohs scale hardness | 2.5–3.5 (7 for chrysocolla chalcedony, high-silica content) |
| Luster | Vitreous to dull |
| Streak | white to a blue-green color |
| Diaphaneity | Translucent to opaque |
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