Hardystonite and Pyrophyllite Physical Properties

Hardystonite

Pyrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.396-3.4432.65-2.90

1 7.18

1.5 Fracture

Brittle, Metallic

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

[001] good, [100] and [110] fair

{001} Perfect

1.7 Mohs Hardness

3-4Not Available

2 10

1.8 Chemical Composition

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

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

Hardystonite and Pyrophyllite Chemical Formula

While comparing Hardystonite 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 Hardystonite and Pyrophyllite chemical formula.

Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Hardystonite and Pyrophyllite Specific Gravity

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