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Laurite

Year of discovery: 1866 (Tanah Laut (Pontijin), Indonesia), 1978 (Japan)

Locality list: 3 localities of laurite

• RuS₂
• [Ru⁴⁺][S₂]^4-

• Class: Pyrite group
• Class: Sulfide
• Insoluble in: HCl

• Ru => Fe: Pyrite, Marcasite
• Ru => Ni: Vaesite
• Ru => Co: Cattierite
• Ru => Cu: Villamanínite (Villamaninite)
• Ru => Mn: Hauerite
• Ru => Os: Erlichmanite (Series)
• Ru => W: Tungstenite
• Ru => Mo: Molybdenite, Jordisite

• S => As: Anduoite

• Color: Black
• Streak: Dark gray
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Octahedral, Cubic, Penta-Dodecahedron

• Cleavage: Perfect on {111} (4 planes)
• Hardness: 7
• Density: 7.0

• System: Cubic
• Group: m3, Pa3
• Lattice: a=5.6

Etymology: Laura R. Joy, wife of Charles A. Joy, American Chemist