[ Top ] [ Japanese ]

Manganohörnesite, Manganohornesite

Year of discovery: 1951 (Långban, Sweden), 2016 (Japan)

Locality list: A locality of manganohörnesite

• Mn₃(AsO₄)₂,8H₂O
• (Mn,Mg)₃(AsO₄)₂,8H₂O
• [Mn²⁺₃][(AsO₄)₂]^6-,8H₂O

• Class: Vivianite group
• Class: Arsenate - Hydrate
• Physical: Elastic

• Mn => Ni: Annabergite
• Mn => Zn: Köttigite (Kottigite), Metaköttigite (Metakottigite)
• Mn => Co: Erythrite
• Mn => Fe: Symplesite, Parasymplesite
• Mn => Mg: Hörnesite (Hornesite)

• Color: White, Colorless
• Streak: White
• Luster: Silky
• Diaphaneity: Transparent-Translucent

• Cleavage: Perfect on {010} (1 plane), Poor on {100} and {201} (2 planes)
• Hardness: 1
• Density: 2.6

• System: Monoclinic
• Group: 2/m, P2/m
• Lattice: a=10.4, b=28.1, c=4.8, β=105.7