Catapleiite and Gypsum Physical Properties

Catapleiite

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

2.722.20-2.40

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

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

1.6 Cleavage

{110} Perfect, {010} Perfect

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

5-62

2 10

1.8 Chemical Composition

Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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

Catapleiite and Gypsum Chemical Formula

While comparing Catapleiite 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 Catapleiite and Gypsum chemical formula.

Chemical formula of Catapleiite- Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Catapleiite and Gypsum Specific Gravity

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