Mineral 1.0Test your knowledge of specific minerals

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  SilicateChalcedony
SiO2

Other names/forms:
Micro/Cryptocrystalline Quartz

Most distinguishing features:
Identified by hardness and texture/habit.

Industrial/economical uses:
Used for making glass and as a source of Silicon.

  SilicateNepheline
(Na,K)AlSiO4

Most distinguishing features:
Resembles quartz but instead is softer.

Industrial/economical uses:
Used in the manufacture of ceramics and glass.

  SilicateOrthoclase
KAlSi3O8

Other names/forms:
Kspar

Most distinguishing features:
Colour and evidence of exsolution with plagioclase.

  SilicatePlagioclase
CaAl2Si2O8

Other names/forms:
Anothite (Ca), Albite (Na)

Most distinguishing features:
Parallel striations and white-gray colour separates this mineral from orthoclase (Kspar).

Industrial/economical uses:
Concrete, filler, sand, gravel, etc.

  SilicateQuartz (crystal)
SiO2

Most distinguishing features:
Hardness, translucency and colour are indicators.

  SilicateQuartz (massive)
SiO2

Most distinguishing features:
Hardness and fracture.

  SilicateQuartz (smoky)
SiO2

Most distinguishing features:
Hardness, colour and translucency are indicative.