Dravite and Cassiterite Physical Properties

Dravite

Cassiterite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.03-3.186.86-7.03

1 7.18

1.5 Fracture

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

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular

1.6 Cleavage

{???} Indistinct

{100} imperfect, {110} indistinct; partings on {111} or {011}

1.7 Mohs Hardness

7-7.56-7

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)

SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Dravite and Cassiterite Chemical Formula

While comparing Dravite and Cassiterite 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 Cassiterite 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 Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dravite and Cassiterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Cassiterite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 6.86-7.03 whereas that of Cassiterite is 6.86-7.03.