Aragonite vs Hematite

Property Aragonite Hematite
Formule CaCO3 Fe2O3
Système Cristallin Orthorhombic Trigonal
Classe Minérale 05 Carbonates and Nitrates 04 Oxides and Hydroxides
Dureté Mohs 3.5-4.0 5.0-6.5
Couleur Colorless, white, yellow, blue, green Steel-gray to black, red-brown
Éclat Vitreous Metallic
Trait White Reddish-brown
Transparence Transparent Opaque
Clivage Poor {010} None
Cassure Subconchoidal Conchoidal to uneven

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