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Fianelite

Year of discovery: 1995 (Fianel mine, Switzerland), 2000 (Japan)

Locality list: A locality of fianelite

• Mn₂V₂O₇,2H₂O
• Mn₂V(V,As)O₇,2H₂O
• [Mn²⁺₂][V₂O₇]^4-,2H₂O

• Class: Pyrovanadate - Hydrate

• Color: Red
• Streak: Orange
• Luster: Vitreous-Adamantine
• Diaphaneity: Transparent

• Habit: Rhombohedral

• Cleavage: Good on {001} and {100} (2 planes)
• Hardness: 3
• Density: 3.2

• System: Monoclinic
• Group: 2/m, P2₁/n
• Lattice: a=7.8, b=14.6, c=6.7, β=93.8