Duftite
| ID | 15 | |
|---|---|---|
| Mineral | Duftite | |
| Location | Tsumeb Mine - Tsumeb - Oshikoto - Namibia | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Duftite information at mindat.org |
|
Mindat data
| ID | 1325 |
|---|---|
| Long ID | 1:1:1325:9 |
| Formula |
PbCu(AsO4)(OH)
|
| IMA Status |
0 1 |
| Occurrence | Oxidized zone of a polymetallic deposit. |
| Other Occurrences | Uncommon mineral in the oxidized zone of some polymetallic sulfide deposits. |
| Discovery Year | 1920 |
| Diapheny | Transparent,Translucent |
| Cleavage | Usually unobservable in botryoidal aggregates. |
| Tenacity | brittle |
| Colour | Olive-green, grey-green |
| Hardness (min) | 4.5 |
| Hardness (max) | 4.5 |
| Lustre | Vitreous |
| About the name |
Named by Otto Pufahl in 1920 for Gustav Bernhard Duft [b. 1859 Clausthal, Germany - 1924?], second General Manager of the Tsumcor Mine (Tsumeb Mine), Namibia (~1906), but Duft was active in Namibia as early as 1892. Guillemin (1956) distinguished two kinds of duftite: "duftite-α" = duftite (space group Pnam) and (Ca-bearing) "duftite-β" = duftite (space group P2 |
| Streak | Pale green, white |
| Crystal System | Orthorhombic |
| Cleavage Type | Poor/Indistinct |
| Fracture type | Conchoidal,Sub-Conchoidal |
| Morphology | Usually botryoidal, rare tiny crystals elongated [001] with curved and rough faces aggregated into crusts. Pseudo-octahedral. |
| UV | Not Fluorescent in UV |
| Comment Luster | Lustre vitreous on fracture surfaces; dull on crystal faces. |
| Publication Year | 1920 |
| key_elements |
0 1 2 |
| shortcode_ima | Dft |
| Group | Adelite-Descloizite Group |
Details
Price: € 15
Dimensions: Not registered
Weight: 70 g
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| As | Arsenic |
|
| Cu | Copper | |
| H | Hydrogen | |
| O | Oxygen | |
| Pb | Lead |
|