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Forsterite
Forsterite

Austinite
Austinite



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Forsterite
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Austinite

Forsterite and Austinite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

3.23-3.264.12
1 7.18
👆🏻

Fracture

Conchoidal
Uneven

Cleavage

Perfect on {010} imperfect on {100}
Good in two directions parallel to the prism faces {110}

Mohs Hardness

6.5-74-4.5
2 10
👆🏻

Chemical Composition

Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
CaZn(AsO4)(OH)

Forsterite and Austinite Chemical Formula

While comparing Forsterite 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 Forsterite and Austinite chemical formula.

  • Chemical formula of Forsterite- Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Forsterite and Austinite Specific Gravity

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