Cassiterite vs Chalcopyrite

Property Cassiterite Chalcopyrite
Formule SnO2 CuFeS2
Système Cristallin Tetragonal Tetragonal
Classe Minérale 04 Oxides and Hydroxides 02 Sulfides and Sulfosalts
Dureté Mohs 6.0-7.0 3.5-4.0
Couleur Brown, black, reddish-brown, yellow Brass-yellow, often with iridescent tarnish
Éclat Adamantine Metallic
Trait White to pale brown Greenish-black
Transparence Translucent Opaque
Clivage Poor {100} Poor
Cassure Subconchoidal to uneven Conchoidal to uneven

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