Aragonite vs Hematite

Property Aragonite Hematite
Fórmula CaCO3 Fe2O3
Sistema Cristalino Orthorhombic Trigonal
Classe Mineral 05 Carbonates and Nitrates 04 Oxides and Hydroxides
Dureza Mohs 3.5-4.0 5.0-6.5
Cor Colorless, white, yellow, blue, green Steel-gray to black, red-brown
Brilho Vitreous Metallic
Traço White Reddish-brown
Transparência Transparent Opaque
Clivagem Poor {010} None
Fratura Subconchoidal Conchoidal to uneven

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