Hollandite and Turquoise Physical Properties

Hollandite

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

5.052.30-2.90

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Distinct / Good, Prismatic

Good to perfect_usually N/A

1.7 Mohs Hardness

4-65-6

2 10

1.8 Chemical Composition

Ba(Mn++++,Mn++)8O16

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Hollandite and Turquoise Chemical Formula

While comparing Hollandite 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 Hollandite and Turquoise chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O

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Hollandite and Turquoise Specific Gravity

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