Gibbsite and Pyrophyllite Physical Properties

Gibbsite

Pyrophyllite

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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

2.352.65-2.90

1 7.18

1.5 Fracture

Fibrous, Difficult, Fibrous

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

{001} Perfect

1.7 Mohs Hardness

2.5-3Not Available

2 10

1.8 Chemical Composition

Al(OH)3

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

Gibbsite and Pyrophyllite Chemical Formula

While comparing Gibbsite 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 Gibbsite and Pyrophyllite chemical formula.

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

Compare Grey Gemstones

Gibbsite Vs Galena

Gibbsite Vs Vanadinite

Gibbsite Vs Pallasite

Gibbsite and Pyrophyllite Specific Gravity

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