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Varulite

Year of discovery: 1937 (Varuträsk, Sweden), 1980 (Japan)

Locality list: A locality of varulite

• NaCaMn₃(PO₄)₃
• [Na⁺][Ca²⁺][Mn²⁺][Mn²⁺₂][(PO₄)₃]^9-

• Class: Alluaudite group
• Class: Phosphate

• CaMn₂ => []Fe₂: Alluaudite
• CaMn₂ => MgFe₂: Maghagendorfite
• CaMn₂ => []FeAl: Wyllieite

• Mn₂ => Fe₂: Hagendorfite (Series)

• PO₄ => AsO₄: Arseniopleite

• Color: Dark grayish green, Yellowish green
• Streak: Pale green
• Luster: Resinous
• Diaphaneity: Translucent

• Cleavage: Good on {010} (1 plane), Poor on {100} (1 plane)
• Hardness: 5
• Density: 3.5

• System: Monoclinic
• Group: 2/m, C2/c
• Lattice: a=11.9, b=12.5, c=6.5, β=115.0