Dravite and Orthoclase Physical Properties

Dravite

Orthoclase

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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

3.03-3.182.54-2.61

1 7.18

1.5 Fracture

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

Gems, Uneven

1.6 Cleavage

{???} Indistinct

Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.

1.7 Mohs Hardness

7-7.56

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)

KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Dravite and Orthoclase Chemical Formula

While comparing Dravite and Orthoclase 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 Orthoclase 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 Orthoclase- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dravite and Orthoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Orthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Orthoclase Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.54-2.61 whereas that of Orthoclase is 2.54-2.61.