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Reppiaite

Year of discovery: 1991 (Valgraveglia mine, Italy), 2018 (Japan)

Locality list: A locality of reppiaite

• Mn₅(VO₄)₂(OH)₄
• [Mn²⁺₅][(OH)₄|(VO₄)₂]^10-

• Class: Vanadate - Hydroxide

• VO₄ => AsO₄: Arsenoclasite
• VO₄ => PO₄: Gatehouseite

• Color: Reddish orange
• Streak: Reddish orange
• Luster: Vitreous
• Diaphaneity: Transparent

• Hardness: 3-3.5

• System: Monoclinic

Etymology: Reppia region, Italy, where valgraveglia mine is located.