Mineral 1.0Test your knowledge of specific minerals

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Rose quartz, one of the many MANY varieties of quartz
Rose quartz, one of the many MANY varieties of quartz

Quartz (massive)SiO2

Class: Silicate
Subclass: Framework
Hardness: 7
Density: 2.7
Lustre: Vitreous
Habit: Aggregate of coarse-grained crystals.
Colours: Usually white

  Crystal System: Hexagonal
Cleavage: None
Fracture: Conchoidal under mag
Magnetism: None
Reaction with HCl: None

Identification in hand sample:
Hardness and fracture.

Comments:
Forms in veins.

  

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