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Vaesite

Year of discovery: 1945 (Kasompi mine (Menda mine), Congo (Zaïre)), 1973 (Japan)

Locality list: 3 localities of vaesite

• NiS₂
• [Ni²⁺][S₂]^2-

• Class: Pyrite group
• Class: Disulfide

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

• S => As: Krutovite, Rammelsbergite, Pararammelsbergite
• S => Se: Penroseite, Kullerudite
• S => Sb: Nisbite

• Color: Black, Silver white
• Streak: Black
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Octahedral, Cubic

• Cleavage: Perfect on {001} (3 planes)
• Hardness: 4.5-5.5
• Density: 4.5

• System: Cubic
• Group: m3, Pa3
• Lattice: a=5.7

Etymology: Johannes F. Vaes, Belgian mineralogist of the Belgian mining company, Union Miniere du Haut Katanga in Zaire.