Witherite and Dravite Physical Properties

Witherite

Dravite

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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

4.27-4.353.03-3.18

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

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

1.6 Cleavage

{010} Distinct

{???} Indistinct

1.7 Mohs Hardness

3-3.57-7.5

2 10

1.8 Chemical Composition

BaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Witherite and Dravite Chemical Formula

While comparing Witherite and Dravite 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 Witherite and Dravite chemical formula.

Chemical formula of Witherite- BaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Witherite and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Witherite and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Witherite and Dravite Optical Properties during the identification of gemstone. Specific gravity of Witherite is 3.03-3.18 whereas that of Dravite is 3.03-3.18.