Formula: CuPtAsS2
Origin of name: After locality; the Dao and Ma districts, China
Crystal system: Orthorhombic
Crystal class: 2mm or mmm
Twinning:
Unit cell: a = 5.93 Å, b = 16.23 Å, c = 3.67 Å
Colour: Steel-gray with a yellow tint, silver-grayish white on fresh surface
Diaphaneity: Opaque
Luster: Metallic
Habit: Tabular grains, tiny
Hardness:
Specific gravity: 7.30
Cleavage: 4; {100}, {010}, {001}, {110} perfect to less perfect
Tenacity: Brittle
Streak:
Synonyms/varieties:
Comments: Found in pyroxenite-type platinum ore, associated with copper sulphide mineralisation
| Back to Alphabetical list | Colour photos | Optical properties/Thin sections | SEM images | TEM images | vibrational spectra description | IR spectra | Raman spectra | N-IR spectra | F-IR spectra | IES spectra |