＜ ＜ ＜Knowledge unit of Minerals ＞ ＞ ＞
Orpiment
Introduction
Physical Properties
Chemical Properties
Occurences
Notable Locality
Major Uses
Diagnostic Features

Physical Properties

Crystal System: Monoclinic

Crystal Form: Prismatic (rare)

Habit: Massive; prismatic

Hardness: 1.5-2

Cleavage/Fracture: {010}perfect; uneven fractureLuster: Pearly

Color: Lemon and brown

Streak: Light yellow

Specific Gravity: 3.4-3.5

Other Characteristics: Fusible, strong garlic smell after heated due to arsenic

        

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