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Austinite
Austinite

Pyrope
Pyrope



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Austinite
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Pyrope

Austinite and Pyrope Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

Easily soluble in cold dilute HCl
insoluble in water

Durability

-
-

Specific Gravity

4.123.62-3.87
1 7.18
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Fracture

Uneven
Conchoidal

Cleavage

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

Mohs Hardness

4-4.57-7.5
2 10
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Chemical Composition

CaZn(AsO4)(OH)
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Austinite and Pyrope Chemical Formula

While comparing Austinite and Pyrope 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 Austinite and Pyrope chemical formula.

  • Chemical formula of Austinite- CaZn(AsO4)(OH)
  • Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Austinite and Pyrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Pyrope Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.62-3.87 whereas that of Pyrope is 3.62-3.87.