Cyanotrichite and Brochantite
| ID | 352 | |
|---|---|---|
| Mineral |
Cyanotrichite
Brochantite |
|
| Location | Mina Vieja - Potrerillos - Atacama - Chile | |
| Fluorescence | LW-UV: check SW-UV: check |
|
| Mindat.org |
View Cyanotrichite information at mindat.org View Brochantite information at mindat.org |
|
Mindat data
| ID | 1203 |
|---|---|
| Long ID | 1:1:1203:0 |
| Formula |
Cu4Al2(SO4)(OH)12(H2O)2
|
| IMA Status |
0 1 |
| Discovery Year | 1839 |
| Diapheny | Transparent,Translucent |
| Colour | Sky-blue, azure-blue |
| Hardness (min) | 1.0 |
| Hardness (max) | 3.0 |
| Lustre | Silky |
| About the name | From the Greek κυανός for "blue" and θρίξ for "hair" in allusion to its colour and habit. |
| Streak | Light blue |
| Crystal System | Monoclinic |
| Morphology | Occurs as velvet-, wool- or cotton-like aggregates and coatings comprised of minute acicular crystals; also radial-fibrous or tufted. |
| key_elements |
0 |
| shortcode_ima | Cya |
| Group | Cyanotrichite Group |
| ID | 779 |
|---|---|
| Long ID | 1:1:779:9 |
| Formula |
Cu4(SO4)(OH)6
|
| IMA Status |
0 1 |
| Other Occurrences | In arid climates or in rapidly oxidizing copper sulfide deposits under low acid conditions. |
| Discovery Year | 1824 |
| Diapheny | Transparent,Translucent |
| Cleavage | On {100} perfect. |
| Colour | Green, emerald green, green-black, light green; bluish green in transmitted light. |
| Hardness (min) | 3.5 |
| Hardness (max) | 4.0 |
| Luminescence | None |
| Lustre | Vitreous, Pearly |
| About the name | Named in 1824 by Serve-Dieu Abailard "Armand" Lévy in honor of the French geologist and mineralogist, André-Jean-François-Marie Brochant de Villiers [August 6, 1772, Mantes-la-Ville, Yvelines, France - May 16, 1840, Paris, France]. |
| Streak | Pale green |
| Crystal System | Monoclinic |
| Cleavage Type | Perfect |
| Fracture type | Irregular/Uneven,Conchoidal |
| Morphology | Crystals stout prismatic to acicular [001], elongated [010] at times, or, [100] more rarely; also tabular {001}. Loosely coherent aggregates of acicular crystals; groups and drusy crusts; massive, granular. |
| Twinning | On {100} with composition surface {100}, common. The twinned crystals are often symmetrical and pseudo-orthorhombic in appearance. |
| Comment Luster | Pearly on cleavages. |
| key_elements |
0 |
| shortcode_ima | Bct |
Details
Price: € 15
Dimensions: Not registered
Weight: 45 g
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Al | Aluminium | |
| Cu | Copper | |
| H | Hydrogen | |
| O | Oxygen | |
| S | Sulfur |