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Gobelinite

Year of discovery: 2018 (North mine, France; Eisenzecher Zug mine, Germany)

Locality list:

• CoCu₄(SO₄)₂(OH)₆,6H₂O
• Co(Cu,Co,Ni,Zn)₄(SO₄)₂(OH)₆,6H₂O
• [Co²⁺][Cu²⁺₄][(OH)₆|(SO₄)₂]^10-,6H₂O

• Class: Sulfate - Hydroxide - Hydrate

• Co => Zn: Ktenasite
• Co => Mg: Fehrite
• Co => Ni: Asagiite

• Color: Pale blue, Bluish green, Grayish green
• Streak: White
• Luster: Vitreous, Pearly
• Diaphaneity: Transparent

• Cleavage: None
• Hardness: 2.5
• Density: 2.95

• System: Monoclinic
• Group: 2/m, P2₁/m
• Lattice: a=5.6, b=6.1, c=23.7, β=95.2