Uvite and Gedrite Physical Properties

Uvite

Gedrite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.97-3.143.15-3.259

1 7.18

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Fracture

Uneven, Conchoidal

Cleavage

{1011} Indistinct

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

Mohs Hardness

-99995.5-6

2 10

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Chemical Composition

Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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

Uvite and Gedrite Chemical Formula

While comparing Uvite 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 Uvite and Gedrite chemical formula.

Chemical formula of Uvite- Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
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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Uvite and Gedrite Specific Gravity

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