Turquoise and Cobaltite Physical Properties

Turquoise

Cobaltite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.30-2.906.3

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

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

Good to perfect_usually N/A

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

1.7 Mohs Hardness

5-65.5

2 10

1.8 Chemical Composition

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

CoAsSAnthony et al , Handbook of mineralogy (2001)

Turquoise and Cobaltite Chemical Formula

While comparing Turquoise 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 Turquoise and Cobaltite chemical formula.

Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O
Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

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Turquoise and Cobaltite Specific Gravity

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