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Szmikite

Year of discovery: 1877 (Baia Sprie (Felsőbánya), Romania), 1973 (Japan)

Locality list: 3 localities of szmikite

• MnSO₄,H₂O
• [Mn²⁺][SO₄]^2-,H₂O

• Class: Sulfate - Hydrate
• Formed on dehydration of Ilesite.

• Mn => Co: Cobaltkieserite
• Mn => Ni: Dwornikite
• Mn => Zn: Gunningite
• Mn => Mg: Kieserite
• Mn => Cu: Poitevinite
• Mn => Fe: Szomolnokite

• H₂O => 4H₂O: Ilesite
• H₂O => 5H₂O: Jôkokuite (Jokokuite)
• H₂O => 6H₂O: Chvaleticeite
• H₂O => 7H₂O: Mallardite

• Color: Gray, Red
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: Good
• Hardness: 1.5
• Density: 3.2

• System: Monoclinic
• Group: 2/m, A2/a
• Lattice: a=7.8, b=7.7, c=7.1, β=115.9