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Black Opal
Black Opal

Simpsonite
Simpsonite



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Black Opal
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Simpsonite

Black Opal and Simpsonite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.97-2.22
Not Available
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
1.6 Cleavage
Not Available
None
1.7 Mohs Hardness
6-6.5
7-7.5
1.8 Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

Black Opal and Simpsonite Chemical Formula

While comparing Black Opal and Simpsonite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Black Opal and Simpsonite chemical formula.

  • Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
  • Chemical formula of Simpsonite- Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

Black Opal and Simpsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Black Opal and Simpsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Simpsonite Optical Properties during the identification of gemstone. Specific gravity of Black Opal is Not Available whereas that of Simpsonite is Not Available.