Dravite and Fuchsite Physical Properties

Dravite

Fuchsite

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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

3.03-3.182.77-2.88

1 7.18

2.5 Fracture

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

Uneven

2.6 Cleavage

{???} Indistinct

Perfect basal

2.7 Mohs Hardness

7-7.52.5

2 10

2.11 Chemical Composition

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

K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)

Dravite and Fuchsite Chemical Formula

While comparing Dravite and Fuchsite 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 Fuchsite 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 Fuchsite- K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)

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Dravite and Fuchsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Fuchsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Fuchsite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.77-2.88 whereas that of Fuchsite is 2.77-2.88.