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Parabrandtite

Year of discovery: 1986 (Sterling mine, USA), 2018 (Japan)

Locality list: A locality of parabrandtite

• Ca₂Mn(AsO₄)₂,2H₂O
• (Ca,Pb)₂(Mn²⁺,Mg)(AsO₄)₂,2H₂O
• [Ca²⁺₂][Mn²⁺][(AsO₄)₂]^6-,2H₂O

• Class: Fairfieldite Group
• Class: Arsenate - Hydrate

• Polymorph: Brandtite (Monoclinic)

• Mn => Co: Roselite, β-Roselite
• Mn => Mg: Wendwilsonite, Talmessite
• Mn => Cu: Rruffite
• Mn => Zn: Zincroselite, Gaitite
• Mn => Ni: Nickeltalmessite

• AsO₄ => PO₄: Fairfieldite

• Color: Colorless
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Hardness: 3-4

• System: Triclinic
• Lattice: a=5.9, b=7.0, c=5.6, α=96.8, β=109.3, γ=108.5