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Fluorcalciomicrolite

Year of discovery: 2012 (Volta Grande mine (Mibra mine), Brazil), 1995 (Japan)

Locality list: A locality of fluorcalciomicrolite

• CaNaTa₂O₆F
• (Ca,Na)₂(Ta,Nb)₂O₆(F,OH)
• [Ca²⁺][Na⁺][F|(TaO₃)₂]^3-

• Class: Microlite group < Pyrochlore supergroup
• Class: Tantalate - Fluoride

• F => OH: Hydroxycalciomicrolite

• Color: Dark brown
• Streak: White
• Luster: Adamandine, Vitreous, Resinous
• Diaphaneity: Transparent

• Cleavage: No
• Hardness: 4-5

• System: Cubic
• Group: m3m, Fd3m
• Lattice: a=10.4