Foitite and Turquoise Physical Properties

Foitite

Turquoise

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.172.30-2.90

1 7.18

1.5 Fracture

Handbook of mineralogy (2001)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

None

Good to perfect_usually N/A

1.7 Mohs Hardness

75-6

2 10

1.8 Chemical Composition

Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Foitite and Turquoise Chemical Formula

While comparing Foitite and Turquoise 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 Foitite and Turquoise chemical formula.

Chemical formula of Foitite- Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O

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Foitite and Turquoise Specific Gravity

Another important criteria for qualitative analysis of gemstones is Foitite and Turquoise Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Foitite and Turquoise Optical Properties during the identification of gemstone. Specific gravity of Foitite is 2.30-2.90 whereas that of Turquoise is 2.30-2.90.