Poudretteite and Cavansite Physical Properties

Poudretteite

Cavansite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.51-2.532.25-2.33

1 7.18

1.5 Fracture

Conchoidal, Splintery

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

None

Good on {010}

1.7 Mohs Hardness

53-4

2 10

1.8 Chemical Composition

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Ca(VO)Si4O10•4(H2O)

Poudretteite and Cavansite Chemical Formula

While comparing Poudretteite and Cavansite 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 Poudretteite and Cavansite chemical formula.

Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Cavansite- Ca(VO)Si4O10•4(H2O)

Compare Violet Gemstones

Poudretteite Vs Rutilated Quartz

Poudretteite Vs Rubellite

Poudretteite Vs Sapphire

Poudretteite and Cavansite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Poudretteite and Cavansite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Cavansite Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 2.25-2.33 whereas that of Cavansite is 2.25-2.33.