Poudretteite and Riebeckite Physical Properties

Poudretteite

Riebeckite

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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

2.51-2.533.28-3.44

1 7.18

1.5 Fracture

Conchoidal, Splintery

Uneven, Splintery, Brittle

1.6 Cleavage

None

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

1.7 Mohs Hardness

55.0-6.0

2 10

1.8 Chemical Composition

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

Not Available

Poudretteite and Riebeckite Chemical Formula

While comparing Poudretteite and Riebeckite 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 Riebeckite chemical formula.

Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Violet Gemstones

Poudretteite Vs Rutilated Quartz

Poudretteite Vs Rubellite

Poudretteite Vs Sapphire

Poudretteite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Poudretteite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.