Friedelite and Gahnite Physical Properties

Friedelite

Gahnite

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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

3.06-3.194.00-4.62

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven

Conchoidal, Uneven

1.6 Cleavage

{010} Perfect

Indistinct parting on [111]

1.7 Mohs Hardness

4-57.5-8

2 10

1.8 Chemical Composition

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Friedelite and Gahnite Chemical Formula

While comparing Friedelite and Gahnite 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 Friedelite and Gahnite chemical formula.

Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Friedelite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Friedelite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Friedelite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Friedelite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.