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Potassic-ferri-leakeite

Year of discovery: 2002 (Japan as the first occurence in the World)

Locality list: A locality of potassic-ferri-leakeite

• KNa₂Mg₂Fe₂LiSi₈O₂₂(OH)₂
• [K⁺][Na⁺₂][Mg²⁺₂][Fe³⁺₂][Li⁺][(OH)₂|(Si₄O₁₁)₂]^14-

• Class: Na amphibole subgroup < w(OH,F,Cl)-dominant amphibole group < Amphibole supergroup
• Class: Inosilicate (Double chain) - Hydroxide
• Radioactive: Very weak

• K => Na: Ferri-leakeite

• Color: Reddish brown
• Streak: Pale yellowish brown
• Luster: Vitreous
• Diaphaneity: Transparent

• Habit: Acicular, Prismatic

• Cleavage: Perfect on {110} (2 planes, 120 degree)
• Hardness: 5

• System: Monoclinic
• Group: 2/m, C2/m
• Lattice: a=9.9, b=18.0, c=5.3, β=104.0

Synonym: Potassicleakeite