Mineral 1.0Test your knowledge of specific minerals

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  HalideHalite
NaCl

Other names/forms:
Salt

Most distinguishing features:
Has a salty taste. Cubic cleavage and hardness are indicative for the less brave geologists.

  OxideHematite (massive)
Fe2O3

Other names/forms:
Haematite

Most distinguishing features:
Deep red streak and earthy lustre are indicative. SG may also be indicative.

Industrial/economical uses:
Important ore or iron, sometimes used as a gemstone.

  OxideHematite (specular)
Fe2O3

Other names/forms:
Haematite

Most distinguishing features:
Shining gray metallic lustre and deep-red streak are indicative.

Industrial/economical uses:
Important ore of iron.

  SilicateHornblende
Ca2(Mg,Fe)4Al(Si7Al)O22(OH,F)2

Most distinguishing features:
Prominent striations, prismatic crystals and angle on cleavages is distinguishing.

Industrial/economical uses:
Ornamental.