Grandidierite and Povondraite Physical Properties

Grandidierite

Povondraite

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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

2.85-3.003.26

1 7.18

1.5 Fracture

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)

1.6 Cleavage

Perfect

None

1.7 Mohs Hardness

7.5Not Available

2 10

1.8 Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

Grandidierite and Povondraite Chemical Formula

While comparing Grandidierite and Povondraite 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 Grandidierite and Povondraite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Povondraite- NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

Compare Green Gemstones

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Grandidierite and Povondraite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Povondraite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Povondraite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 3.26 whereas that of Povondraite is 3.26.