Mineral 1.0Test your knowledge of specific minerals

Material: All | Carbonates | Halides | Hydroxides | Native elements | Oxides | Phosphates | Silicates | Sulfates | Sulfides
Difficulty: Normal | Hard
  

Identify the following mineral by clicking on the buttons below to reveal its properties one by one. For a harder/more specific test, choose from the test material above.

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(c) Mineral Picture courtesy of www.yuprocks.com
Known/experimental properties:
Habit: Aggregate of small grains, striated faces, small but visible crystals
Lustre: Vitreous
Hardness: 6 - 7
Cleavage: Perfect
Fracture: Uneven
Streak: White
Rxn w/ Acid: None
Magnetism: None
Specific Gravity: 3.4 - 3.5

Hint: Slight colour difference between this mineral and olivine, but only under magnification (where details in the crystals can be seen). Also indicitive is the presence of a cleavage plane.

  

Calcite (sparry)
Marcasite
Chlorite
Epidote
Plagioclase
Tremolite
Chrysotile
Alabaster
Halite
Calcite (massive)
Aragonite
Corundum
Selenite
Apatite
Pyrite (massive)
Azurite
 
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