Cuprite
Formula: Cu₂O
System: Isometric
Colour: Dark red to cochineal
Lustre: Adamantine, Sub-Metallic, Earthy
Formula: Cu₂O
System: Isometric
Colour: Dark red to cochineal
Lustre: Adamantine, Sub-Metallic, Earthy
Hardness: 3½ - 4
Its dark crystals with red internal reflections are in the
isometric system hexoctahedral class, appearing as cubic, octahedral, or
dodecahedral forms, or in combinations. Penetration twins frequently
occur.
From Tsumeb Mine, Tsumeb, Namibia
