Villiaumite and Dravite Physical Properties

Villiaumite

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

2.793.03-3.18

1 7.18

1.5 Fracture

Brittle, Metallic

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

1.6 Cleavage

{100} Perfect, {010} Perfect, {001} Perfect

{???} Indistinct

1.7 Mohs Hardness

27-7.5

2 10

1.8 Chemical Composition

NaFUlrich Henn and Claudio C.

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

Villiaumite and Dravite Chemical Formula

While comparing Villiaumite 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 Villiaumite and Dravite chemical formula.

Chemical formula of Villiaumite- NaFUlrich Henn and Claudio C.
Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Compare Gems Found in America

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Villiaumite and Dravite Specific Gravity

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