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Atelestite
Year of discovery: 1832 (Neuhilfe mine, Germany)
Locality list:
- Bi2(AsO4)O(OH)
- [Bi3+2][OH|O|AsO4]6-
- Color: Yellow, Yellow green, Yellow brown
- Luster: Adamantine, Resinous
- Diaphaneity: Transparent, Translucent
- Cleavage: Indistinct on {001} (1 plane)
- Hardness: 4.5-5
- Density: 7.1
- System: Monoclinic
- Group: 2/m, P21/b
- Lattice: a=10.9, b=7.4, c=7.0, β=107.2