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Alabaster
Alabaster

Austinite
Austinite



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Alabaster
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Austinite

Alabaster and Austinite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

2.304.12
1 7.18
👆🏻

Fracture

-
Uneven

Cleavage

None
Good in two directions parallel to the prism faces {110}

Mohs Hardness

24-4.5
2 10
👆🏻

Chemical Composition

CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
CaZn(AsO4)(OH)

Alabaster and Austinite Chemical Formula

While comparing Alabaster and Austinite 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 Austinite chemical formula.

  • Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Alabaster and Austinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alabaster and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alabaster and Austinite Optical Properties during the identification of gemstone. Specific gravity of Alabaster is 4.12 whereas that of Austinite is 4.12.