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Magnesiocopiapite

Year of discovery: 1938 (Blythe, USA), 2010 (Japan)

Locality list: A locality of magnesiocopiapite

• MgFe₄(SO₄)₆(OH)₂,20H₂O
• [Mg(H₂O)₆]²⁺[Fe³⁺₄][(OH)₂|(SO₄)₆]^14-,14H₂O

• Class: Copiapite group
• Class: Sulfate - Hydroxide - Hydrate

• Mg => Fe: Copiapite
• Mg => Cu: Cuprocopiapite
• Mg => Ca: Calciocopiapite
• Mg => Zn: Zincocopiapite
• Mg => Al_2/3: Aluminocopiapite

• Fe²⁺(OH) => Fe³⁺O: Ferricopiapite

• Color: Greenish yellow, Yellow
• Streak: Pale yellow
• Luster: Pearly
• Diaphaneity: Transparent-Translucnet

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

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=7.3, b=18.2, c=7.3, α=93.9, β=101.5, γ=99.4