Turquoise and Poldervaartite Physical Properties

Turquoise

Poldervaartite

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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

2.30-2.902.91

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Handbook of mineralogy (2001)

1.6 Cleavage

Good to perfect_usually N/A

None

1.7 Mohs Hardness

5-6Not Available

2 10

1.8 Chemical Composition

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

Turquoise and Poldervaartite Chemical Formula

While comparing Turquoise and Poldervaartite 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 Poldervaartite chemical formula.

Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O
Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

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Turquoise and Poldervaartite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Turquoise and Poldervaartite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Poldervaartite Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 2.91 whereas that of Poldervaartite is 2.91.