Thulite and Cobaltite Physical Properties

Thulite

Cobaltite

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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

3.16.3

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

1.6 Cleavage

Perfect {010} imperfect {100}

{100} Good, {010} Good, {001} Good

1.7 Mohs Hardness

6-75.5

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

CoAsSAnthony et al , Handbook of mineralogy (2001)

Thulite and Cobaltite Chemical Formula

While comparing Thulite and Cobaltite 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 Thulite and Cobaltite chemical formula.

Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

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Thulite and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thulite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Thulite is 6.3 whereas that of Cobaltite is 6.3.