Edenite and Gahnite Physical Properties

Edenite

Gahnite

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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

3.05-3.374.00-4.62

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Conchoidal, Uneven

1.6 Cleavage

Good on (110)

Indistinct parting on [111]

1.7 Mohs Hardness

5-67.5-8

2 10

1.8 Chemical Composition

NaCa2Mg5Si7AlO22(OH)2

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

Edenite and Gahnite Chemical Formula

While comparing Edenite 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 Edenite and Gahnite chemical formula.

Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Edenite and Gahnite Specific Gravity

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