Mineral 1.0Test your knowledge of specific minerals

Material: All | Silicates | Halides | Carbonates | Sulfates | Oxides | Phosphates | Hydroxides | Native elements | 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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Known/experimental properties:
Habit: Aggregate of acicular grains.
Lustre: Vitreous
Hardness: 5 - 6
Cleavage: Good
Fracture: Uneven
Streak: White
Rxn w/ Acid: None
Magnetism: None
Specific Gravity: 2.9 - 3.2

Hint: Noticable habit of white acicular grains.

  

Hematite (specular)
Talc
Tourmaline
Chromite
Antigorite
Pyrite (massive)
Graphite
Aragonite
Staurolite
Tremolite
Fluorite
Quartz (crystal)
Topaz
Calcite (sparry)
Corundum
Quartz (smoky)
Galena
 
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