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Cyprine
Year of discovery: 2015 (Wessels, South Africa), 2023 (Japan)
Locality list: A locality of cyprine
- Ca19Cu(Al,Mg)12Si18O69(OH)9
- (Ca,Na)19Cu(Al,Mg,Fe)12([],B,Al,Fe)5Si18O68(OH,F,O)10
- [Ca2+19][Cu2+][Al3+4][Al3+6Mg2+2][]4[][OH|(OH)9|(SiO4)10|(Si2O7)4]74-
- Color: Blue, Green, Dark red with a blue tint
- Streak: White
- Luster: Vitreous
- Diaphaneity: Transparent
- Cleavage: None
- Hardness: 6.5
- Density: 3.4
- System: Tetragonal
- Group: 4/m, P4/n
- Lattice: a=15.6, c=11.8