Narsarsukite and Black Opal Physical Properties

Narsarsukite

Black Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.72-2.831.97-2.22

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Good on {100} and {110}

Not Available

1.7 Mohs Hardness

6-76-6.5

2 10

1.8 Chemical Composition

Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.

SiO 2 + H 2OUlrich Henn and Claudio C.

Narsarsukite and Black Opal Chemical Formula

While comparing Narsarsukite 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 Narsarsukite and Black Opal chemical formula.

Chemical formula of Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Narsarsukite and Black Opal Specific Gravity

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