Mineral 1.0Test your knowledge of specific minerals

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  OxideMagnetite
Fe3O4

Most distinguishing features:
Highly magnetic. Habit and colour are also indicators.

Industrial/economical uses:
Mined for iron. Crushed magnetite also been used as aggregate to make high-density concrete for specialized applications, such as nuclear reactors.

  CarbonateMalachite
Cu2(CO)3(OH)2

Most distinguishing features:
Colour is primary indicator, as well as habit.

Industrial/economical uses:
Used as a minor ore of copper and also has ornamental uses due to vivid green colour.

  SulfideMarcasite
FeS2

Most distinguishing features:
Bronze-yellow colour and habit are indicative. Streak is also helpful.

Industrial/economical uses:
Can be used as source of sulfur and iron, but not normally economically valuable.

  SulfideMolybdenite
MoS2

Most distinguishing features:
Colour is best indicator. Greasy feel and luster are good as well, as is its relative softness.

Industrial/economical uses:
Primary ore of which molybdenum is mined. Usually alloyed with iron.

  SilicateMuscovite
KAl2(AlSi3O10)(OH)2

Most distinguishing features:
Colour and habit are best indicators.

Industrial/economical uses:
Used in the electronics industry in the manufacture of capacitors, transistors, insulators and certain window types. Also used as a filler in building materials.