[ Top ] [ Japanese ]

Ferro-aluminoceladonite

• KFeAlSi₄O₁₀(OH)₂
• K(Fe,Mg)(Al,Fe)Si₄O₁₀(OH)₂
• [K⁺][Fe²⁺][Al³⁺][(OH)₂|(Si₂O₅)₂]^6-

• Class: Celadonite series < Dioctahedral < True mica group < Mica supergroup
• Class: Phyllosilicate - Hydroxide
• Radioactive: Very weak

• Fe => Mg: Aluminoceladonite (Series)

• Al => Fe: Ferroceladonite (Series)

• FeSi => Al₂: Muscovite

• Color: Dark bluish green
• Streak: Pale green
• Luster: Earthy
• Diaphaneity: Translucent-Opaque

• Habit: Earthy

• Cleavage: Perfect on {001} (1 planes)
• Hardness: 2-2.5
• Density: 2.9

• System: Monoclinic
• Group: 2/m, C2/m
• Lattice: a=5.3, b=9.1, c=10.1, β=100.3