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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Known/experimental properties:
Habit: Medium grained aggregate.
Lustre: Resinous, adamantine to submetallic
Hardness: 3.5 - 4
Cleavage: Perfect
Fracture: Conchoidal
Streak: White to light-medium brown
Rxn w/ Acid: None
Magnetism: None
Specific Gravity: 3.9 - 4.1

Hint: Low specific gravity distinguishes it from galena, as does colour. Lustre also indicative.

  

Orthoclase
Augite
Fluorite
Sphalerite
Antigorite
Magnetite
Kyanite
Hematite (massive)
Bornite
Azurite
Corundum
Hematite (specular)
Chromite
Olivine
Marcasite
Malachite
Alabaster
 
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