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: Massive, compact, columnar or fibrous. Prismatic crystals are rare. Sometimes forms as dendritic coatings on other rocks.
Lustre: Earthy
Hardness: 2 - 6.5
Cleavage: Perfect
Fracture: Uneven
Streak: Black
Rxn w/ Acid: Very weak
Magnetism: None
Specific Gravity: 5.1

Hint: Will leave sooty marks if touched.

  

Biotite
Plagioclase
Topaz
Tremolite
Garnet
Calcite (sparry)
Alabaster
Staurolite
Chalcocite
Pyrolusite
Arsenopyrite
Sphalerite
Copper
Calcite (massive)
Barite
Aragonite
Kyanite
 
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