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Austinite
Austinite

Creedite
Creedite



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Austinite
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Creedite

Austinite and Creedite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Easily soluble in cold dilute HCl
-

Durability

-
-

Specific Gravity

4.122.70
1 7.18
👆🏻

Fracture

Uneven
Uneven, Conchoidal

Cleavage

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

Mohs Hardness

4-4.54.5
2 10
👆🏻

Chemical Composition

CaZn(AsO4)(OH)
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Austinite and Creedite Chemical Formula

While comparing Austinite and Creedite 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 Creedite chemical formula.

  • Chemical formula of Austinite- CaZn(AsO4)(OH)
  • Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Austinite and Creedite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Creedite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.70 whereas that of Creedite is 2.70.