Austinite and Lazulite Physical Properties

Austinite

Lazulite

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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

4.123.04-3.17

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

Uneven, Uneven, Gemstones of the world (2001) More from other references

1.6 Cleavage

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

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

4-4.55.5

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Austinite and Lazulite Chemical Formula

While comparing Austinite and Lazulite 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 Lazulite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Compare Green Gemstones

Austinite Vs Clintonite

Austinite Vs Cordierite

Austinite Vs Apophyllite KF

Austinite and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.