[ Top ] [ Japanese ]

Zýkaite, Zykaite

Year of discovery: 1976 (Šafary mine, Czech), 2022 (Japan)

Locality list: A locality of zýkaite

• Fe₄(AsO₄)₃SO₄(OH),15H₂O
• [Fe³⁺₄][OH|SO₄|(AsO₄)₃]^12-,15H₂O

• Class: Arsenate - Sulfate - Hydroxide - Hydrate

• AsO₄ => PO₄: Bohuslavite

• Color: Grayish white, Pale yellow, Pale green
• Streak: Pale yellow
• Luster: Dull
• Diaphaneity: Translucent

• Cleavage: No
• Hardness: 2
• Density: 2.5

• System: Orthorhombic
• Group: 222, P222
• Lattice: a=20.9, b=7.0, c=37.0