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Charlesite
Charlesite

Austinite
Austinite



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Charlesite
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Austinite

Charlesite and Austinite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

1.794.12
1 7.18
👆🏻

Fracture

Irregular/uneven
Uneven

Cleavage

Perfect on {10bar10}
Good in two directions parallel to the prism faces {110}

Mohs Hardness

2.54-4.5
2 10
👆🏻

Chemical Composition

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
CaZn(AsO4)(OH)

Charlesite and Austinite Chemical Formula

While comparing Charlesite 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 Charlesite and Austinite chemical formula.

  • Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Charlesite and Austinite Specific Gravity

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