Chrysocolla, Malachite and Cuproadamite
| ID | 592 | |
|---|---|---|
| Mineral |
Chrysocolla
Malachite Cuproadamite |
|
| Location | Kolwezi Mine - Kolwezi - Haut-Katanga - Democratic Republic of the Congo | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Chrysocolla information at mindat.org View Malachite information at mindat.org View Cuproadamite information at mindat.org |
|
Mindat data
| ID | 1040 |
|---|---|
| Long ID | 1:1:1040:1 |
| Formula |
(Cu2-xAlx)H2-xSi2O5(OH)4 · nH2O
|
| IMA Status |
0 1 |
| Other Occurrences | Found in the oxidation zone of copper deposits, often encrusting or replacing earlier secondary minerals. |
| Industrial | A very minor ore of copper. |
| Discovery Year | 315 |
| Diapheny | Translucent,Opaque |
| Cleavage | None |
| Tenacity | brittle |
| Colour | Green, bluish green, blue, blackish blue to black, or brown and rarely yellow |
| Hardness (min) | 2.5 |
| Hardness (max) | 3.5 |
| Luminescence | None |
| Lustre | Vitreous - Dull |
| About the name | The name was first used by Theophrastus in 315 B.C. and comes from the Greek "chrysos", meaning "gold," and "kolla", meaning "glue," in allusion to the name of the material used to solder gold. André-Jean-François-Marie Brochant de Villiers revived the name in 1808. |
| Streak | Light green (unknown for black or yellow varieties) |
| Crystal System | Orthorhombic |
| Cleavage Type | None Observed |
| Fracture type | Irregular/Uneven,Sub-Conchoidal |
| Morphology | Most often found as cryptocrystalline to amorphous botryoidal aggregates and crusts. Crystals reported as fine acicular to fibrous, very rare. |
| Twinning | None reported. |
| key_elements |
0 |
| shortcode_ima | Ccl |
| ID | 2550 |
|---|---|
| Long ID | 1:1:2550:4 |
| Formula |
Cu2(CO3)(OH)2
|
| IMA Status |
0 1 |
| Other Occurrences | It is the most common secondary mineral found in the oxidized zones of copper deposits. |
| Industrial | A minor ore of copper when abundant enough in a copper deposit. |
| Discovery Year | Unno |
| Diapheny | Opaque |
| Cleavage |
Perfect on |
| Tenacity | brittle |
| Colour | Bright green, with crystals deeper shades of green, even very dark to nearly black; green to yellowish green in transmitted light. |
| Hardness (min) | 3.5 |
| Hardness (max) | 4.0 |
| About the name | Named in antiquity (see Pliny the Elder, 79 CE) molochitus after the Greek μαλαχή, "mallows," in allusion to the green colour of the leaves. Known in the new spelling, malachites, at least by 1661. |
| Streak | Light green |
| Crystal System | Monoclinic |
| Cleavage Type | Perfect |
| Fracture type | Splintery |
| Morphology | Crystals uncommon, usually short or long prismatic or acicular, parallel to [001]; often grouped in rosettes, sprays, or tufts. Botryoidal to mammillary aggregates of radiating fibrous crystals more common. It may also be massive, compact, and stalactitic. |
| Twinning | Untwinned crystals are extremely rare. Typically twinned on {100}, sometimes as penetration or polysynthetic twinning with the axis parallel to [201]. |
| Thermal Behaviour | Loses water at about 315°, leaving tenorite. |
| key_elements |
0 |
| shortcode_ima | Mlc |
| Group | Rosasite Group |
| ID | 1174 |
|---|---|
| Long ID | 1:1:1174:3 |
| IMA Status |
0 1 |
| Variety of | 21 |
| Entry type | 2 |
| Description | Olivenite Group. A variety of Adamite containing some copper. Originally reported from Cap Garonne Mine, Pradet, Var, Provence-Alpes-Côte d'Azur, France. A member of the Olivenite Group, between Olivenite and Adamite, but with zinc dominant over c... |
| Diapheny | Transparent,Translucent |
| Colour | Bright green; faint tints of green in transmitted light. |
| Hardness (min) | 3.5 |
| Hardness (max) | 3.5 |
| Lustre | Vitreous |
| Crystal System | Orthorhombic |
| key_elements |
0 1 |
Details
Price: € 125
Dimensions: Not registered
Weight: Not registered
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Al | Aluminium | |
| As | Arsenic |
|
| C | Carbon | |
| Cu | Copper | |
| H | Hydrogen | |
| O | Oxygen | |
| Si | Silicium | |
| Zn | Zinc |