Gypsum and Hurlbutite Physical Properties

Gypsum

Hurlbutite

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1 Physical Properties

1.1 Tenacity

Flexible

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.20-2.402.90

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect on {010}, distinct on {100}

None

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

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

CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Gypsum and Hurlbutite Chemical Formula

While comparing Gypsum and Hurlbutite 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 Gypsum and Hurlbutite chemical formula.

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

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Gypsum Vs Hurlbutite

Gypsum and Hurlbutite Specific Gravity

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