Z I R C O N
|
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. |