Alabaster and Anhydrite Physical Properties

Alabaster

Anhydrite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.302.90-2.98

1 7.18

1.5 Fracture

Not Available

Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

23.5

2 10

1.8 Chemical Composition

CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)

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

Alabaster and Anhydrite Chemical Formula

While comparing Alabaster 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 Alabaster and Anhydrite chemical formula.

Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Brown Gemstones

Alabaster Vs Astrophyllite

Alabaster Vs Anhydrite

Alabaster Vs Anthophyllite

Alabaster and Anhydrite Specific Gravity

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