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Ilesite

Year of discovery: 1881 (Hall valley, USA), 1974 (Japan)

Locality list: 3 localities of ilesite

• MnSO₄,4H₂O
• (Mn,Zn,Fe²⁺)SO₄,4H₂O
• [Mn²⁺][SO₄]^2-,4H₂O

• Class: Rozenite group
• Class: Sulfate - Hydrate
• Soluble in: Water
• Formed on dehydration of Jôkukuite (Jokukuite).
• Dehydrate to Szmikite.

• Mn => Co: Aplowite
• Mn => Zn: Boyleite
• Mn => Fe: Rozenite
• Mn => Mg: Starkeyite

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

• Color: Green
• Tarnish: White (by dehydration)
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Hardness: 2-3
• Density: 2.3

• System: Monoclinic
• Group: 2/m, P2₁/n
• Lattice: a=5.9, b=13.8, c=8.0, β=90.8