Dolomite and Pyrophyllite Physical Properties

Dolomite

Pyrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Poorly soluble in dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.80-2.952.65-2.90

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

Perfect on {10 1 1}, rhombohedral cleavage

{001} Perfect

1.7 Mohs Hardness

3.5-4Not Available

2 10

1.8 Chemical Composition

CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Dolomite and Pyrophyllite Chemical Formula

While comparing Dolomite and Pyrophyllite 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 Dolomite and Pyrophyllite chemical formula.

Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dolomite and Pyrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dolomite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dolomite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Dolomite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.