Carletonite and Black Opal Physical Properties

Carletonite

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

2.451.97-2.22

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Brittle

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

1.6 Cleavage

Perfect on {001}, good on {110}

Not Available

1.7 Mohs Hardness

4-4.56-6.5

2 10

1.8 Chemical Composition

KNa 4Ca 4Si 8O 18(CO 3) 4(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

SiO 2 + H 2OUlrich Henn and Claudio C.

Carletonite and Black Opal Chemical Formula

While comparing Carletonite 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 Carletonite and Black Opal chemical formula.

Chemical formula of Carletonite- KNa 4Ca 4Si 8O 18(CO 3) 4(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare White Gemstones

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Carletonite Vs Chrome Tourmaline

Carletonite Vs Chrome-Chalcedony

Carletonite and Black Opal Specific Gravity

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