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ZirconZrSiO4

Class: Silicate
Hardness: 7.5
Density: 4.6 - 4.7
Streak: White
Lustre: Subadamantine
Habit: Excellent tetragonal prisms
Colours: Colorless, red, brown, yellow, green or gray

  Crystal System: Tetragonal
Cleavage: Imperfect
Fracture: Conchoidal
Magnetism: None
Reaction with HCl: Unknown

Identification in hand sample:
Excellent crystalline habit, density and streak/colour are indicative.

Industrial / ecomonic uses:
Source of zirconium and hafnium

Comments:
Often radioactive due to presence of U and Th.

  

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