[ Top ] [ Japanese ]

Botryogen

Year of discovery: 1828 (Falun mine, Sweden), 1994 (Japan)

Locality list: A locality of botryogen

• MgFe(SO₄)₂(OH),7H₂O
• [Mg²⁺][Fe³⁺][OH|(SO₄)₂],7H₂O

• Class: Botryogen group
• Class: Sulfate - Hydroxide
• Soluble in: boiling Water (Partially), HCl

• Mg => Na₂: Sideronatrite

• Color: Orange-Red
• Streak: Yellowish brown
• Luster: Vitreous
• Diaphaneity: Translucent-Transparent

• Cleavage: Perfect on {010} (1 planes), Good on {110} (2 planes)
• Hardness: 2-2.5
• Density: 2.1

• System: Monoclinic
• Group: 2/m, P2₁/c
• Lattice: a=10.5, b=17.8, c=7.1, β=100.3