Elbaite and Wulfenite Physical Properties

Elbaite

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

2.90-3.106.50-7.00

1 7.18

1.5 Fracture

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

Irregular, Brittle, Conchoidal

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

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

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

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

Elbaite and Wulfenite Chemical Formula

While comparing Elbaite 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 Elbaite and Wulfenite chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)

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Elbaite and Wulfenite Specific Gravity

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