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: Intergrown crystals, prismatic character of grains.
Lustre: Vitreous
Hardness: 5 - 6
Cleavage: 2 at 56 and 124
Fracture: Uneven / conchoidal
Streak: White or gray
Rxn w/ Acid: None
Magnetism: None
Specific Gravity: 3.3 - 3.4

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

  

Pyrolusite
Orthoclase
Bornite
Chalcocite
Plagioclase
Chalcopyrite
Quartz (massive)
Corundum
Hornblende
Alabaster
Sphalerite
Galena
Tremolite
Selenite
Dolomite
Hematite (massive)
 
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