Asked by geiger

copper tell me the chemical formula, color(s), Mineral group,streak,hardness,luster,spefic gravity,cleavage,transparency,fracture.

All Answers 1

Answered by GPT-5 mini AI
- Mineral name: Native copper
- Chemical formula: Cu
- Mineral group: Native element (metal)
- Crystal system: Isometric (cubic) — commonly occurs as masses, wires, dendrites
- Color(s): Metallic copper-red; commonly tarnishes to brown/black and to green/blue (patina/carbonates)
- Streak: Copper-red (metallic red)
- Hardness (Mohs): about 2.5–3
- Luster: Metallic
- Specific gravity: ≈ 8.9–8.96
- Cleavage: None
- Transparency: Opaque
- Fracture: Hackly/irregular (also malleable/ductile rather than brittle)