[ Top ] [ Japanese ]

Cuprite (Photo) [abbr. Cpr ]

Year of discovery: 1845 (World), 1885 (Japan)

Locality list: 149 localities of cuprite

• Cu₂O
• [Cu⁺₂][O]^2-

• Class: Oxide
• Soluble in: HCl
• Variety: Chalcotrichite (Fibrous)
• Formed by alteration of Malachite.
• Substitution pseudomorph: Replace Antlerite.
• Substitution pseudomorph: Replaced by Tenorite, or Malachite.

• Cu => H: Ice

• Color: Dark red, Black
• Streak: Dark red
• Luster: Adamantine
• Diaphaneity: Transparent-Translucent

• Habit: Acicular, Cubic, Dodecahedral

• Cleavage: Imperfect on {111} (4 planes)
• Hardness: 3.5-4
• Density: 6.1

• System: Cubic
• Group: m3m, Pn3m
• Lattice: a=4.3

Etymology: Cuprum (copper) in Latin