Piemontite and Austinite Physical Properties

Piemontite

Austinite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Easily soluble in cold dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available4.12

1 7.18

1.5 Fracture

Uneven, Splintery

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

[001] good, [100] distinct

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

1.7 Mohs Hardness

6-6.54-4.5

2 10

1.8 Chemical Composition

Not Available

CaZn(AsO4)(OH)

Piemontite and Austinite Chemical Formula

While comparing Piemontite 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 Piemontite and Austinite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)

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Piemontite and Austinite Specific Gravity

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