Chlorastrolite and Spinel Physical Properties

Chlorastrolite

Spinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

3.1-3.53.64-3.66

1 7.18

1.5 Fracture

Granular

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

None, but may exhibit slight parting

1.7 Mohs Hardness

5-68

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)

MgAl₂O₄

Chlorastrolite and Spinel Chemical Formula

While comparing Chlorastrolite and Spinel 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 Spinel 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 Spinel- MgAl₂O₄

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Chlorastrolite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chlorastrolite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chlorastrolite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Chlorastrolite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.