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Bieberite

Year of discovery: 1845 (Im Lochborn mine, Germany), 1947 (Japan)

Locality list: 3 localities of bieberite

• CoSO₄,7H₂O
• [Co(H₂O)₆]²⁺[SO₄]^2-,H₂O

• Class: Melanterite group
• Class: Sulfate - Hydrate
• Soluble in: Water
• Dehydrate to Moorhouseite.

• Co => Mg: Epsomite, Alpersite
• Co => Zn: Zincmelanterite, Goslarite
• Co => Fe: Melanterite
• Co => Cu: Boothite
• Co => Mn: Mallardite
• Co => Ni: Morenosite

• 7H₂O => H₂O: Cobaltkieserite
• 7H₂O => 4H₂O: Aplowite
• 7H₂O => 6H₂O: Moorhouseite

• Color: Pink, Red
• Tarnish: Dull luster (by dehydration)
• Streak: White
• Luster: Vitreous
• Diaphaneity: Translucent-Opaque

• Cleavage: Perfect on {001} (1 planes), Good on {110} (2 planes)
• Hardness: 2
• Density: 2.0

• System: Monoclinic
• Group: 2/m, P2₁/c
• Lattice: a=14.0, b=6.5, c=10.9, β=105.3