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Société Coopérative Minérales Mutabazi

Cassiterite

Chemical Formula SnO₂
Color Brown, black, yellow, red, and green
Hardness 6 – 7 on the Mohs scale
Density 6.8 – 7.1 g/cm³
Refractive Index 1.98 – 2.00
Transparency Transparent to opaque
Luster Adamantine (brilliant)
Crystal System Tetragonal
Cleavage None
Fracture Conchoidal
Melting Point 1,800 – 2,000 °C
Specific Gravity 6.8 – 7.1
Origin Found in locations like Bolivia, Indonesia, China, and Myanmar
Uses Tin ore extraction, gemstones
Streak White