Hercynite and Pezzottaite Physical Properties

Hercynite

Pezzottaite

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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

4.392.90-3.14

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

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

1.6 Cleavage

{111} Indistinct, {111} Indistinct, {111} Indistinct

Imperfect; basal

1.7 Mohs Hardness

7.5-87.5-8

2 10

1.8 Chemical Composition

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

Hercynite and Pezzottaite Chemical Formula

While comparing Hercynite and Pezzottaite 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 Hercynite and Pezzottaite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

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Hercynite and Pezzottaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Pezzottaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Pezzottaite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.90-3.14 whereas that of Pezzottaite is 2.90-3.14.