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Mottramite (Photo)

Year of discovery: 1876 (Mottram St Andrew, UK), 1959 (Japan)

Locality list: 7 localities of mottramite

• PbCuVO₄(OH)
• Pb(Cu,Zn)VO₄(OH)
• [Pb²⁺][Cu²⁺][OH|VO₄]^4-

• Class: Descloizite group
• Class: Vanadate - Hydroxide
• Soluble in: HCl, HNO₃, H₂SO₄

• Pb => Ca: Tangeite

• Cu => Zn: Descloizite (Series)
• Cu => Fe: Cechite
• Cu => Mn: Pyrobelonite

• VO₄ => AsO₄: Duftite (Series)

• Color: Green, Grayish green, Yellowish green, Dark brown
• Streak: Yellowish green
• Luster: Greasy
• Diaphaneity: Transparent-Opaque

• Habit: Earthy

• Cleavage: No
• Hardness: 3-3.5
• Density: 5.9

• System: Orthorhombic
• Group: mmm, Pnma
• Lattice: a=7.7, b=9.3, c=6.0