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Chevkinite-(Ce) - Chibiny (Khibiny)

Collectors Summary

Chemical Formula (Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Color braunschwarz
Streak color braun
Hardness (Mohs) 5.00 - 6.00
Solubility +++ warme HNO3, + HCl
Crystal System monoklin, C2/m