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Tenorite [abbr. Tnr ]

Year of discovery: 1841 (Monte Vesuvius, Italy), 1885 (Japan)

Locality list: 56 localities of tenorite

• CuO
• [Cu²⁺][O]^2-

• Class: Oxide
• Soluble in: HCl
• Formed on dehydration of Malachite above 315 degree.
• Substitution pseudomorph: Replace Cuprite.
• Formed more than pH 8.0. Malachite is stable less than pH 8.0.
• Chalcocite is formed at the more reductive condition.

• Cu => Be: Bromellite
• Cu => Ni: Bunsenite
• Cu => Mn: Manganosite
• Cu => Mg: Periclase
• Cu => Cd: Monteponite
• Cu => Ca: Lime
• Cu => Fe: Wüstite (Wustite)
• Cu => Zn: Zincite

• Cu₂ => CuMn: Crednerite
• Cu₂ => CuCr: Mcconnellite
• Cu₂ => CuFe: Delafossite

• Color: Gray, Black
• Streak: Black
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Massive

• Cleavage: Poor
• Hardness: 3.5
• Density: 6.5

• System: Monoclinic
• Group: 2/m, C2/c
• Lattice: a=4.7, b=3.4, c=5.1, β=99.5

Etymology: Michele Tenore (1780-1861), Italian botanist

Synonym: Melaconite