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Austinite and Hibonite Physical Properties


Hibonite and Austinite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Easily soluble in cold dilute HCl   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
4.12   
3.84   

Fracture
Brittle, Uneven, Brittle, Uneven   
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle   

Cleavage
Good in two directions parallel to the prism faces {110}   
{0001} good, {10 1 0} parting   

Mohs Hardness
4-4.5   
7.5-8   

Chemical Composition
CaZn(AsO4)(OH)   
(Ca,Ce)(Al,Ti,Mg)12O19   

Optical Properties >>
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Austinite and Hibonite Chemical Formula

While comparing Austinite and Hibonite 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 Hibonite chemical formula.

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Austinite and Hibonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Hibonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Hibonite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.84 whereas that of Hibonite is 3.84.

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