Dravite and Xonotlite Physical Properties

Dravite

Xonotlite

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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

3.03-3.182.71-2.72

1 7.18

1.5 Fracture

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

Handbook of mineralogy (2001), Difficult, Fibrous

1.6 Cleavage

{???} Indistinct

{???} Good

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

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

Ca 6Si 6O 17(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Dravite and Xonotlite Chemical Formula

While comparing Dravite and Xonotlite 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 Dravite and Xonotlite chemical formula.

Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Xonotlite- Ca 6Si 6O 17(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Dravite and Xonotlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Xonotlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Xonotlite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.71-2.72 whereas that of Xonotlite is 2.71-2.72.