Chalcocite
| ID | 609 | |
|---|---|---|
| Mineral | Chalcocite | |
| Location | Salsigne Mine - Salsigne - Carcassonne - France | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Chalcocite information at mindat.org |
|
Mindat data
| ID | 962 |
|---|---|
| Long ID | 1:1:962:7 |
| Formula |
Cu2S
|
| IMA Status |
0 1 |
| Description | Chalcocite-Yarrowite Series. A secondary mineral in or near the oxidized zone of copper sulfide deposits. Hexagonal above 105°C ('High-chalcocite'). Easily confused with djurleite. Chalcocite easily converts to djurleite under the electron beam t... |
| Diapheny | Opaque |
| Cleavage | Indistinct on (110) |
| Tenacity | brittle |
| Colour | Blue black, gray, black, black gray, or steel gray |
| Hardness (min) | 2.5 |
| Hardness (max) | 3.0 |
| Luminescence | None |
| Lustre | Metallic |
| About the name | Named chalcosine in 1832 by François Sulpice Beudant from Greek, "chalkos", copper. This mineral was known by a wide variety of names previously. In 1868, James D. Dana and George J. Brush renamed this material "chalcocite". |
| Streak | Blackish lead gray |
| Crystal System | Monoclinic |
| Cleavage Type | Poor/Indistinct |
| Fracture type | Conchoidal |
| Twinning | Common on {110} yielding pseudohexagonal stellate forms. Also on {032}, {112}. |
| UV | Not fluorescent in UV |
| key_elements |
0 |
| shortcode_ima | Cc |
| Group | Chalcocite-Digenite Group |
Details
Price: € 4
Dimensions: Not registered
Weight: Not registered
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Cu | Copper | |
| S | Sulfur |