Kuramite | |
---|---|
General | |
Category | Sulfide |
Formula (repeating unit) | Cu3 Sn S2 |
Crystal system | Tetragonal |
Identification | |
Color | Grey, Steel Grey |
Crystal habit | Inclusions, Microscopic crystals |
Mohs scale hardness | 5 |
Luster | Metallic |
Streak | Metallic |
Density | 4.56g/cm3 |
References | [1] [2] [3] [4] |
Kuramite is a mineral of the stannite group. It is named after the Kochbulak Au-Ag-Te deposit locality in the Chatkal-Kuraminskii Mountains in Uzbekistan, where it was first discovered. [1]
Kuramite occurs in gold-sulfide-quartz veins as inclusions in goldfieldite, as observed in the Kochbulak deposit in Uzbekistan. It may also occur as microscopic crystals. [4]
Kuramite has also been found in the Arctic Ocean, Argentina, Chile, DR Congo, Greece, Hungary, Japan, United Kingdom, and USA. [4]
Kuramite's hardness on the Mohs scale is 5, and it has a density of 4.56. [2] It is an opaque steel grey color with a metallic luster and a metallic streak.
The chemical formula of Kuramite is Cu3SnS4 with common impurities being iron, zinc and indium (Fe, Zn, and In). [4] [3]
Copper | 43.56% |
Tin | 27.13% |
Sulfur | 29.31% |
X-ray study of Kuramite was done using the powder method, in the mineralogical laboratory of IGEM, Academy of Sciences of the USSR, by G. V. Vasova (RKO-57.3, unfiltered FeK). [1] Kuramite was found to relate to the stannite- kesterite group. The parameters of the unit cell are found to be a=5.445±0.005 Å, c=10.75±0.02 Å, c/a=1.972.
d-spacing | Intensity |
---|---|
3.13 Å | (10) |
1.914 Å | (8) |
1.640 Å | (6) |
1.108 Å | (4) |
1.244 Å | (3) |
2.70 Å | (2) |
1.044 Å | (2) |
Kuramite | |
---|---|
General | |
Category | Sulfide |
Formula (repeating unit) | Cu3 Sn S2 |
Crystal system | Tetragonal |
Identification | |
Color | Grey, Steel Grey |
Crystal habit | Inclusions, Microscopic crystals |
Mohs scale hardness | 5 |
Luster | Metallic |
Streak | Metallic |
Density | 4.56g/cm3 |
References | [1] [2] [3] [4] |
Kuramite is a mineral of the stannite group. It is named after the Kochbulak Au-Ag-Te deposit locality in the Chatkal-Kuraminskii Mountains in Uzbekistan, where it was first discovered. [1]
Kuramite occurs in gold-sulfide-quartz veins as inclusions in goldfieldite, as observed in the Kochbulak deposit in Uzbekistan. It may also occur as microscopic crystals. [4]
Kuramite has also been found in the Arctic Ocean, Argentina, Chile, DR Congo, Greece, Hungary, Japan, United Kingdom, and USA. [4]
Kuramite's hardness on the Mohs scale is 5, and it has a density of 4.56. [2] It is an opaque steel grey color with a metallic luster and a metallic streak.
The chemical formula of Kuramite is Cu3SnS4 with common impurities being iron, zinc and indium (Fe, Zn, and In). [4] [3]
Copper | 43.56% |
Tin | 27.13% |
Sulfur | 29.31% |
X-ray study of Kuramite was done using the powder method, in the mineralogical laboratory of IGEM, Academy of Sciences of the USSR, by G. V. Vasova (RKO-57.3, unfiltered FeK). [1] Kuramite was found to relate to the stannite- kesterite group. The parameters of the unit cell are found to be a=5.445±0.005 Å, c=10.75±0.02 Å, c/a=1.972.
d-spacing | Intensity |
---|---|
3.13 Å | (10) |
1.914 Å | (8) |
1.640 Å | (6) |
1.108 Å | (4) |
1.244 Å | (3) |
2.70 Å | (2) |
1.044 Å | (2) |