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Ixiolite

Year of discovery: 1962 (Skogsböle, Finland), 2004 (Japan)

Locality list: 2 localities of ixiolite

• (Ta,Mn²⁺,Fe²⁺)O₂
• (Ta,Nb,Sn,Mn²⁺,Fe²⁺)O₂
• [(Ta⁵⁺,Mn²⁺,Fe²⁺)₄][O₈]^16-

• Class: Oxide
• Alter to Wodginite or Columbite structure by heating above 700 degree.

• Color: Gray, Black
• Streak: Dark brown
• Luster: Metallic
• Diaphaneity: Opaque

• Cleavage: Indistinct
• Hardness: 6-6.5
• Density: 7.1

• System: Orthorhombic
• Lattice: a=5.7, b=4.7, c=5.2