Crocoite and Poudretteite Physical Properties

Crocoite

Poudretteite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.90-6.102.51-2.53

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).

Conchoidal, Splintery

1.6 Cleavage

{110} Distinct, {001} Indistinct, {100} Indistinct

None

1.7 Mohs Hardness

2.5-35

2 10

1.8 Chemical Composition

PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Crocoite and Poudretteite Chemical Formula

While comparing Crocoite and Poudretteite 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 Crocoite and Poudretteite chemical formula.

Chemical formula of Crocoite- PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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Crocoite and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crocoite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crocoite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Crocoite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.