¡Õ ¡Õ ¡ÕKnowledge unit of Minerals ¡Ö ¡Ö ¡Ö
Pyrite
Introduction
Physical Properties
Chemical Properties
Occurences
Notable Locality
Major Uses
Diagnostic Features

Physical Properties

Crystal System: Isometric

Crystal Form: Cubic; dodecahedral; octahedral

Habit: Massive; granular; reniform; concretion; botryoidal; discoid

Hardness: 6-6.5

Cleavage/Fracture: {001} obscure; conchoidal to uneven fractureLuster: Metallic

Color: Copper-yellow

Streak: Black to green black

Specific Gravity: 4.9-5.2

Other Characteristics:

(1) On the cubic crystal planes, lines are frequent, and the streaks on two connected planes are perpendicular.

(2) With metallic luster, which dims if the mineral is placed in air for a long time

(3) Interpenetrant crysta, or so-called Iron Cross Twin.

(4) Crisp

(5) Opaque

(6) Occasionally slightly magnetic

        

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