Mineralpedia Details for Vicanite-(Ce)
Vicanite-(Ce)
Named for the type locality at the Vican (Vico Lake) volcanic complex in Italy, where it is found in volcanic ejecta in a pyroclastic formation. Vicanite appears as yellow-green, prismatic, dipyramidal crystals.
Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)
- Formula
- (Ca,Ce,La,Th)15As5+(As3+,Na)0.5Fe3+0.7Si6B4(O,F)47
- Crystal System
- Trigonal
- Crystal Habit
- Anhedral Grains, Crystalline - Fine
- Cleavage
- None, None, None
- Luster
- Vitreous - Adamantine
- Color
- yellow green, green
- Streak
- white
- Class
- Trigonal - Ditrigonal Pyramidal
- Fracture
- Conchoidal
- Hardness
- 5.5-6
- WebMineral
- View Vicanite-(Ce)
- Mindat
- View Vicanite-(Ce)
Vicanite-(ce) from Castellaccio di Petrignano, Vetralla, Vico Lake, Viterbo, Italy
Micro, glassy green crystal to about 0.75mm. Very rare.
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