Elbaite and Edenite Physical Properties

Elbaite

Edenite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.103.05-3.37

1 7.18

1.5 Fracture

Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

Good on (110)

1.7 Mohs Hardness

75-6

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

NaCa2Mg5Si7AlO22(OH)2

Elbaite and Edenite Chemical Formula

While comparing Elbaite and Edenite 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 Elbaite and Edenite chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2

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Elbaite and Edenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Elbaite and Edenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Edenite Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 3.05-3.37 whereas that of Edenite is 3.05-3.37.