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Ominelite

Year of discovery: 1999 (Japan as the first occurence in the World)

Locality list: 2 localities of ominelite

• FeAl₃BO₉
• (Fe,Mg)(Al,Fe)₃BO₉
• [Fe²⁺][Al³⁺₃][O₂|BO₃|SiO₄]^11-

• Class: Nesosilicate - Neso-Borate - Oxide

• Fe => Mg: Grandidierite

• Color: Blue
• Streak: Pale blue
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Habit: Prismatic, Granular

• Cleavage: No
• Hardness: 7

• System: Orthorhombic
• Group: mmm, Pbnm
• Lattice: a=10.3, b=11.1, c=5.8

Etymology: Mount Omine in Nara prefecture, Japan, where this mineral was discovered for the first time.