Austinite and Vivianite Physical Properties

Austinite

Vivianite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Easily soluble in cold dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.122.64-2.70

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

(e.g. graphite).

1.6 Cleavage

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

{010} Perfect

1.7 Mohs Hardness

4-4.5Not Available

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Austinite and Vivianite Chemical Formula

While comparing Austinite and Vivianite 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 Vivianite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Green Gemstones

Austinite Vs Cordierite

Austinite Vs Clintonite

Austinite Vs Apophyllite KF

Austinite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.