Charoite and Gypsum Physical Properties

Charoite

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

2.54-2.782.20-2.40

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Good in three directions

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

5-62

2 10

1.8 Chemical Composition

K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Charoite and Gypsum Chemical Formula

While comparing Charoite 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 Charoite and Gypsum chemical formula.

Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Charoite and Gypsum Specific Gravity

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