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: Aggregate of coarse-grained crystals.
Lustre: Vitreous
Hardness: 7
Cleavage: None
Fracture: Conchoidal under mag
Streak:
Rxn w/ Acid: None
Magnetism: None
Specific Gravity: 2.7

Hint: Hardness and fracture.

  

Siderite
Apatite
Barite
Stibnite
Orthoclase
Azurite
Augite
Malachite
Garnet
Chlorite
Graphite
Galena
Quartz (massive)
Selenite
Tourmaline
Quartz (crystal)
Calcite (massive)
 
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