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Ruthenarsenite

Year of discovery: 1974 (Waria river, Papua New Guinea)

Locality list:

• (Rh,Ni)As
• [(Rh³⁺,Ni)][As]^3-

• Class: Arsenide

• (Rh,Ni) => Rh: Cherepanovite
• (Rh,Ni) => Ni: Nickeline
• (Rh,Ni) => Co: Langisite
• (Rh,Ni) => (Co,Fe): Modderite
• (Rh,Ni) => (Fe,Ni,Co): Westerveldite

• As => Sb: Minakawaite
• As => (Cu,Ge): Michitoshiite-(Cu)

• Color: Pale brown
• Luster: Metallic
• Diaphaneity: Opaque

• Hardness: 6-6.5
• Density: 10.0

• System: Orthorhombic
• Group: mmm, Pnma
• Lattice: a=5.6, b=3.2, c=6.2