Willemite and Barite Physical Properties

Willemite

Barite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.89-4.18

4.48

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

Uneven

1.6 Cleavage

{0001}, {11 2 0} imperfect

{010} Perfect, {210} Perfect, {010} Imperfect

1.7 Mohs Hardness

5.5

3-3.5

1.8 Chemical Composition

Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

BaSO4

Willemite and Barite Chemical Formula

While comparing Willemite and Barite 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 Willemite and Barite chemical formula.

Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Barite- BaSO4

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Willemite and Barite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Willemite and Barite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Barite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 4.48 whereas that of Barite is 4.48.