Chlorastrolite and Creedite Physical Properties

Chlorastrolite

Creedite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.1-3.52.70

1 7.18

1.5 Fracture

Granular

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Not Available

Perfect on {100}

1.7 Mohs Hardness

5-64.5

2 10

1.8 Chemical Composition

Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)

Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Chlorastrolite and Creedite Chemical Formula

While comparing Chlorastrolite and Creedite 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 Chlorastrolite and Creedite chemical formula.

Chemical formula of Chlorastrolite- Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

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Chlorastrolite and Creedite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chlorastrolite and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chlorastrolite and Creedite Optical Properties during the identification of gemstone. Specific gravity of Chlorastrolite is 2.70 whereas that of Creedite is 2.70.