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Kamiokite

Year of discovery: 1985 (Japan as the first occurence in the World)

Locality list: A locality of kamiokite

• Fe₂Mo₃O₈
• [Fe²⁺₂][Mo⁴⁺₃O₈]^4-

• Class: Molybdate
• Soluble in: HNO₃ (Slowly)
• Insoluble in: HCl
• Alter to Molybdenite.

• Fe => Mn: Iseite
• Fe => []: Ilsemannite
• Fe => Mg: Majindeite

• Color: Iron black
• Streak: Black
• Luster: Sub-Metallic
• Diaphaneity: Opaque

• Habit: Hexagonal tabular

• Cleavage: Perfect on {0001} (1 planes)
• Hardness: 4.5
• Density: 6.0

• System: Hexagonal
• Group: 6mm, P6₃mc
• Lattice: a=5.8, c=10.1

Etymology: Kamioka mine in Gifu prefecture, Japan, where this mineral was discovered for the first time.