Pyrophyllite and Jet Physical Properties

Pyrophyllite

Jet

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.65-2.901.19-1.35

1 7.18

1.5 Fracture

Gemstones (2009), Flexible Flexible fragments.

ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

{001} Perfect

Not Available

1.7 Mohs Hardness

Not Available2.5-4

2 10

1.8 Chemical Composition

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

Not Available

Pyrophyllite and Jet Chemical Formula

While comparing Pyrophyllite and Jet 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 Pyrophyllite and Jet chemical formula.

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

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Pyrophyllite Vs Sard

Pyrophyllite and Jet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Jet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Jet Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 1.19-1.35 whereas that of Jet is 1.19-1.35.