Povondraite and Fire Opal Physical Properties

Povondraite

Fire Opal

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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

3.261.97-2.22

1 7.18

1.5 Fracture

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

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

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

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

Povondraite and Fire Opal Chemical Formula

While comparing Povondraite and Fire Opal 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 Povondraite and Fire Opal chemical formula.

Chemical formula of Povondraite- NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

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Povondraite and Fire Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Povondraite and Fire Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Povondraite and Fire Opal Optical Properties during the identification of gemstone. Specific gravity of Povondraite is 1.97-2.22 whereas that of Fire Opal is 1.97-2.22.