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Cuprorivaite
Year of discovery: 1938 (Mount Vesuvius, Italy)
Locality list:
- CaCuSi4O10
- [Ca2+2][Cu2+2][(Si2O5)2]4-
- Color: Blue
- Luster: Vitreous
- Diaphaneity: Transparent-Translucent
- Cleavage: Perfect on {001} (1 plane)
- Hardness: 5
- Density: 3.1
- System: Tetragonal
- Group: 4/mmm, P4/ncc
- Lattice: a=7.3, c=15.1