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Ferroceladonite [abbr. Fcel ]

• KFe²⁺Fe³⁺Si₄O₁₀(OH)₂
• K(Fe²⁺,Mg)(Fe³⁺,Al)Si₄O₁₀(OH)₂
• [K⁺][Fe²⁺][Fe³⁺][(OH)₂|(Si₂O₅)₂]^6-

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

• Fe²⁺ => Mg: Celadonite (Series)

• Fe³⁺ => Al: Ferro-aluminoceladonite (Series)

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

• Habit: Earthy

• Cleavage: Perfect on {001} (1 planes)
• Hardness: 2-2.5
• Density: 3.1

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