Gedrite and Bertrandite Physical Properties

Gedrite

Bertrandite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.15-3.2592.59-2.60

1 7.18

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Fracture

Cleavage

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

{001} Perfect, {110} Distinct, {101} Distinct

Mohs Hardness

5.5-66-7

2 10

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Chemical Composition

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

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Gedrite and Bertrandite Chemical Formula

While comparing Gedrite and Bertrandite 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 Gedrite and Bertrandite chemical formula.

Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Compare Brown Gemstones

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Gedrite and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gedrite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gedrite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Gedrite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.