Dravite and Clinohumite Physical Properties

Dravite

Clinohumite

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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

3.03-3.183.13-3.75

1 7.18

1.5 Fracture

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

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

{???} Indistinct

Poor on {100}

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)

(Mg,Fe2+ ) 9(SiO 4) 4(F,OH)) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Dravite and Clinohumite Chemical Formula

While comparing Dravite and Clinohumite 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 Clinohumite 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 Clinohumite- (Mg,Fe2+ ) 9(SiO 4) 4(F,OH)) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dravite and Clinohumite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Clinohumite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Clinohumite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 3.13-3.75 whereas that of Clinohumite is 3.13-3.75.