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Mexican fire opal
Mexican fire opal

Austinite
Austinite



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Mexican fire opal
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Austinite

Mexican fire opal and Austinite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

-99994.12
1 7.18
👆🏻

Fracture

-
Uneven

Cleavage

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

Mohs Hardness

-99994-4.5
2 10
👆🏻

Chemical Composition

SiO2·nH2O
CaZn(AsO4)(OH)

Mexican fire opal and Austinite Chemical Formula

While comparing Mexican fire opal 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 Mexican fire opal and Austinite chemical formula.

  • Chemical formula of Mexican fire opal- SiO2·nH2O
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Mexican fire opal and Austinite Specific Gravity

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