Gedrite and Sylvite Physical Properties

Gedrite

Sylvite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.15-3.2591.993

1 7.18

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Fracture

Uneven

Cleavage

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

Perfect on [100], [010], [001]

Mohs Hardness

5.5-62.5

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)

KCl

Gedrite and Sylvite Chemical Formula

While comparing Gedrite and Sylvite 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 Sylvite 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 Sylvite- KCl

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Gedrite and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gedrite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gedrite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Gedrite is 1.993 whereas that of Sylvite is 1.993.