Question: what are the physical properties of zincite?
Answer: Lustre: Sub-Vitreous, Resinous, Waxy, Greasy, Silky, Dull, Earthy.
Transparency: Transparent, Translucent, Opaque.
Comment: Found in a wide variety of textures.
Colour: Red, orange, yellow, white; rarely green.
Streak: Orange-yellow.
Hardness: 4 on Mohs scale.
Tenacity: Brittle.
Cleavage: