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Copiapite

Year of discovery: 1833 (Copiapó province, Chile), 1953 (Japan)

Locality list: 11 localities of copiapite

• Fe₅(SO₄)₆(OH)₂,20H₂O
• [Fe(H₂O)₆]²⁺[Fe³⁺₄][(OH)₂|(SO₄)₆]^14-,14H₂O

• Class: Copiapite group
• Class: Sulfate - Hydroxide - Hydrate
• Soluble in: Water (Yellow solution)
• Insoluble in: HCl
• Magnetism: Paramagnetic

• Fe²⁺ => Mg: Magnesiocopiapite
• Fe²⁺ => Cu: Cuprocopiapite
• Fe²⁺ => Ca: Calciocopiapite
• Fe²⁺ => Zn: Zincocopiapite
• Fe²⁺ => Al_2/3: Aluminocopiapite

• Fe²⁺(OH) => Fe³⁺O: Ferricopiapite

• Color: Yellow, Yellowish green
• Luster: Pearly, Earthy
• Diaphaneity: Transparent-Opaque

• Cleavage: Perfect on {010} (1 planes), Imperfect on {101} (1 plane
• Hardness: 2.5-3
• Density: 2.1

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=7.3, b=18.8, c=7.4, α=91.5, β=102.2, γ=99.0