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Mineralpedia Details for Vanadiocarpholite

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Vanadiocarpholite

Vanadiocarpholite

Named for the vanadium in the composition and for its relationship to carpholite. It is a rare mineral that occurs only in Italy at the Molinello mine, the type locality, and the Valgraveglia mine, both in Liguria. It occurs at the type locality in thin veins and open fissures in a silicified wood sample from manganese-ore bearing cherts. It appears as honey yellow to brown to pale straw yellow aggregates of acicular crystals that are associated with volborthite and quartz.

Ref. Basso, R., et al. and the European Journal of Mineralogy May, June 2005 v. 17 no. 3 p. 501-507

Formula
Mn2+V3+AlSi2O6(OH)4 
Crystal System
Orthorhombic 
Crystal Habit
Acicular 
Cleavage
Perfect, None, None 
Luster
Vitreous - Silky 
Color
pale straw yellow, brown 
Class
Orthorhombic - Dipyramidal 
Fracture
Flexible 
Hardness
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Vanadiocarpholite from Molinello mine, Graveglia Valley, Liguria, Italy

Vanadiocarpholite
            from Molinello mine, Graveglia Valley, Liguria, Italy Micro fibrous crystals to 0.75mm.
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