Simpsonite and Black Opal Physical Properties

Simpsonite

Black Opal

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available1.97-2.22

1 7.18

1.5 Fracture

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

SiO 2 + H 2OUlrich Henn and Claudio C.

Simpsonite and Black Opal Chemical Formula

While comparing Simpsonite and Black Opal 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 Simpsonite and Black Opal chemical formula.

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

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Simpsonite and Black Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Simpsonite and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Simpsonite and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Simpsonite is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.