Pyrophyllite and Barite Physical Properties

Pyrophyllite

Barite

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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

2.65-2.904.48

1 7.18

1.5 Fracture

Gemstones (2009), Flexible Flexible fragments.

Uneven

1.6 Cleavage

{001} Perfect

{010} Perfect, {210} Perfect, {010} Imperfect

1.7 Mohs Hardness

Not Available3-3.5

2 10

1.8 Chemical Composition

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

BaSO4

Pyrophyllite and Barite Chemical Formula

While comparing Pyrophyllite and Barite 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 Barite chemical formula.

Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Barite- BaSO4

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Pyrophyllite and Barite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Barite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Barite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 4.48 whereas that of Barite is 4.48.