Mineral 1.0Test your knowledge of specific minerals

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Minerals by class: Carbonates | Halides | Hydroxides | Native elements | Oxides | Phosphates | Silicates | Sulfates | Sulfides
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  SulfateAlabaster
CaSO4 - 2H2O

Other names/forms:
Gypsum

Most distinguishing features:
Identified by hardness and good cleavage.

Industrial/economical uses:
Modern use is in gypsum wallboard used in construction. Used as an ornamental stone and for sculpture due to its softness.

  SulfateBarite
BaSO4

Most distinguishing features:
High specific gravity is best indicator, colour and fracture are also helpful.

Industrial/economical uses:
Primary ore for barium, also used as an additive to drilling mud (because of high SG). Has over 2000 uses in industry.

  SulfateSelenite
CaSO4 - 2H2O

Other names/forms:
Gypsum

Most distinguishing features:
Single large crystals of gypsum, typified by hardness and transparency.

Industrial/economical uses:
Used in gypsum wallboard.