Stichtite and Poudretteite Physical Properties

Stichtite

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

2.11-2.202.51-2.53

1 7.18

1.5 Fracture

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

Conchoidal, Splintery

1.6 Cleavage

Perfect on {0001}

None

1.7 Mohs Hardness

Not Available5

2 10

1.8 Chemical Composition

Mg 6Cr 2(CO 3)(OH) 16 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Stichtite and Poudretteite Chemical Formula

While comparing Stichtite 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 Stichtite and Poudretteite chemical formula.

Chemical formula of Stichtite- Mg 6Cr 2(CO 3)(OH) 16 · 4H 2OMichael 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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Stichtite and Poudretteite Specific Gravity

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