Powellite and Gypsum Physical Properties

Powellite

Gypsum

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1 Physical Properties

1.1 Tenacity

Not Available

Flexible

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.232.20-2.40

1 7.18

1.5 Fracture

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

Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

{111} Distinct

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

3.5-42

2 10

1.8 Chemical Composition

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

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Powellite and Gypsum Chemical Formula

While comparing Powellite and Gypsum 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 Gypsum chemical formula.

Chemical formula of Powellite- CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Compare Blue Gemstones

Powellite Vs Rubellite

Powellite Vs Rock Crystal

Powellite Vs Sanidine

Powellite and Gypsum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Powellite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Powellite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Powellite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.