[ Top ] [ Japanese ]

Ferricopiapite

Year of discovery: 1938 (Atacama, Chile), 1974 (Japan)

Locality list: 4 localities of ferricopiapite

• Fe₅(SO₄)₆O(OH),20H₂O
• Fe₅(SO₄)₆(O,OH)₂,20H₂O
• [Fe³⁺][Fe³⁺₄][OH|O|(SO₄)₆]^15-,20H₂O

• Class: Copiapite group
• Class: Sulfate - Oxide - Hydroxide
• Soluble in: Water

• Fe³⁺O => Fe²⁺(OH): Copiapite
• Fe³⁺O => Mg(OH): Magnesiocopiapite
• Fe³⁺O => Cu(OH): Cuprocopiapite
• Fe³⁺O => Ca(OH): Calciocopiapite
• Fe³⁺O => Zn(OH): Zincociocopiapite
• Fe³⁺O => Al_2/3(OH): Aluminocopiapite

• Color: Yellow
• Streak: Pale yellow
• Luster: Pearly
• Diaphaneity: Transparent-Translucent

• Cleavage: Perfect on {010} (1 planes)
• Hardness: 2.5-3
• Density: 2.1

• System: Triclinic, Pseudo-Orthorhombic
• Group: (-1), P(-1)
• Lattice: a=7.4, b=18.4, c=7.3, α=93.8, β=102.2, γ=98.9