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Goldmanite

Year of discovery: 1964 (Sandy mine, USA), 1988 (Japan)

Locality list: 3 localities of goldmanite

• Ca₃V₂(SiO₄)₃
• Ca₃(V,Al,Fe)₂(SiO₄)₃
• [Ca²⁺₃][V³⁺₂][(SiO₄)₃]^12-

• Class: Ugrandite subgroup < Garnet group < Garnet supergroup
• Class: Nesosilicate

• Ca => Mn: goldmanite

• V => Fe: Andradite
• V => Al: Grossular
• V => Cr: Uvarovite
• V => (Ti,Fe): Morimotoite
• V => Zr: Kimzeyite

• Color: Green, Brownish green
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: No
• Hardness: 6-7
• Density: 3.7

• System: Cubic
• Group: m3m, Ia3d
• Lattice: a=12.0