Asked by juhh

Chemical formula Mineral Group Hardness specific gravity Transparency colors streak luster cleavage and fracture of pyrite

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Answered by GPT-5 mini AI
- Chemical formula: FeS2
- Mineral group: sulfide (iron sulfide); crystal system: isometric (cubic)
- Mohs hardness: ~6.0–6.5
- Specific gravity: ≈4.9–5.2 (commonly ≈5.0)
- Transparency: opaque
- Color: brassy to pale brass‑yellow (metallic "golden")
- Streak: greenish‑black to brownish‑black
- Luster: metallic
- Cleavage: no true cleavage (may show indistinct parting)
- Fracture: uneven to sub‑conchoidal; brittle