Powellite and Polyhalite Physical Properties

Powellite

Polyhalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.232.78

1 7.18

1.5 Fracture

UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Conchoidal, Brittle

1.6 Cleavage

{111} Distinct

Perfect on {10 1 }; parting on {010}

1.7 Mohs Hardness

3.5-43.5

2 10

1.8 Chemical Composition

CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Not Available

Powellite and Polyhalite Chemical Formula

While comparing Powellite and Polyhalite 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 Powellite and Polyhalite chemical formula.

Chemical formula of Powellite- CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

Powellite Vs Rock Crystal

Powellite Vs Rubellite

Powellite Vs Sanidine

Powellite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Powellite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Powellite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Powellite is 2.78 whereas that of Polyhalite is 2.78.