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Nepheline
Nepheline

Austinite
Austinite



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Nepheline
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Austinite

Nepheline and Austinite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

2.55-2.654.12
1 7.18
👆🏻

Fracture

Subconchoidal, Conchoidal
Uneven

Cleavage

[1010] Poor
Good in two directions parallel to the prism faces {110}

Mohs Hardness

5-64-4.5
2 10
👆🏻

Chemical Composition

Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
CaZn(AsO4)(OH)

Nepheline and Austinite Chemical Formula

While comparing Nepheline 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 Nepheline and Austinite chemical formula.

  • Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Nepheline and Austinite Specific Gravity

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