Elbaite and Gedrite Physical Properties

Elbaite

Gedrite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.90-3.103.15-3.259

1 7.18

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Fracture

Uneven, Conchoidal

Cleavage

Poor/indistinct on {1120} and {1011}

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

Mohs Hardness

75.5-6

2 10

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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

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Elbaite and Gedrite Chemical Formula

While comparing Elbaite and Gedrite 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 Gedrite 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 Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Elbaite and Gedrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Elbaite and Gedrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Gedrite Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 3.15-3.259 whereas that of Gedrite is 3.15-3.259.