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Coquimbite
Year of discovery: 1841 (Coquimbo region, Chile), 1958 (Japan)
Locality list: 4 localities of coquimbite
- Fe2(SO4)3,9H2O
- (Fe,Al)2(SO4)3,9H2O
- [Fe3+2][(SO4)3]6-,9H2O
- Color: Pale green, Pale blue
- Streak: White
- Luster: Vitreous
- Diaphaneity: Transparent
- Cleavage: Inperfect on {1011} (3 planes)
- Hardness: 2.5
- Density: 2.1
- System: Trigonal
- Group: (-3)m, P(-3)1c
- Lattice: a=10.9, c=17.1