English: Koper oxyde.
Name: copper(I) oxide.
Chemical: Cu2O.
Clades: X2O;
Oxides;
Lapidae.
Crystal structure: Cubic hexagonal
Use: minor ore of copper.
MineralogyColor: dark crystals with red internal reflections.
Crystal structure: isometric hexoctahedral class, appearing as cubic, octahedral, or dodecahedral forms.
Hardness: 3.5 to 4.
Specific gravity: 6.1.
Luster: sub-metallic to brilliant adamantine.
Chalcotrichite from Ray, Arizona frequently occurs in association with copper sulfide, native copper, azurite, chrysocolla, malachite, tenorite and a variety of iron oxide minerals; is known as ruby copper due to its distinctive red color.