Lazulite and Wulfenite Physical Properties

Lazulite

Wulfenite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.176.50-7.00

1 7.18

1.5 Fracture

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

Irregular, Brittle, Conchoidal

1.6 Cleavage

{001} Indistinct, {???} Indistinct

On {011}, distinct; on {001}, {013}, indistinct

1.7 Mohs Hardness

5.53

2 10

1.8 Chemical Composition

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

PbMoO 4Walter Schumann , Gemstones of the world (2001)

Lazulite and Wulfenite Chemical Formula

While comparing Lazulite and Wulfenite 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 Lazulite and Wulfenite chemical formula.

Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)

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Lazulite and Wulfenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Wulfenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Wulfenite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 6.50-7.00 whereas that of Wulfenite is 6.50-7.00.