Andesine and Anhydrite Physical Properties

Andesine

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.65-2.692.90-2.98

1 7.18

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Fracture

Uneven, Conchoidal

Conchoidal

Cleavage

Perfect on {001}, good on {010}

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

Mohs Hardness

6-6.53.5

2 10

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Chemical Composition

(Na,Ca)Al_1-2Si_3-2O₈

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Andesine and Anhydrite Chemical Formula

While comparing Andesine and Anhydrite 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 Andesine and Anhydrite chemical formula.

Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Red Gemstones

Andesine Vs Aragonite

Andesine Vs Astrophyllite

Andesine Vs Black Opal

Andesine and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andesine and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andesine and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Andesine is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.