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Umbalite
Umbalite

Austinite
Austinite



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Umbalite
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Austinite

Umbalite and Austinite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

3.62-4.334.12
1 7.18
👆🏻

Fracture

Uneven
Uneven

Cleavage

Indiscernible
Good in two directions parallel to the prism faces {110}

Mohs Hardness

7-7.54-4.5
2 10
👆🏻

Chemical Composition

Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
CaZn(AsO4)(OH)

Umbalite and Austinite Chemical Formula

While comparing Umbalite 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 Umbalite and Austinite chemical formula.

  • Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Umbalite and Austinite Specific Gravity

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