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: Polysynthetic twinning
Lustre: Vitreous
Hardness: 6 - 6.5
Cleavage: Perfect
Fracture: Subconchoidal
Streak: White
Rxn w/ Acid: None
Magnetism: None
Specific Gravity: 2.6

Hint: Colour and evidence of exsolution with plagioclase.

  

Olivine
Chalcocite
Chrysotile
Tourmaline
Chalcedony
Barite
Topaz
Orthoclase
Galena
Alabaster
Plagioclase
Corundum
Apatite
Quartz (smoky)
Actinolite
Magnetite
Fluorite
Calcite (sparry)
 
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