Gedrite and Spinel Physical Properties

Gedrite

Spinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

3.15-3.259

3.64-3.66

1.5 Fracture

Not Available

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

None, but may exhibit slight parting

1.7 Mohs Hardness

5.5-6

1.8 Chemical Composition

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

MgAl₂O₄

Gedrite and Spinel Chemical Formula

While comparing Gedrite and Spinel 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 Spinel 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 Spinel- MgAl₂O₄

Compare Brown Gemstones

Gedrite Vs Hibonite

Gedrite Vs Jacobsite

Gedrite Vs Hessonite

Gedrite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gedrite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gedrite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Gedrite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.

Brown Gemstones

Glass

Goethite

Goldstone

Grossular

Hessonite

Hibonite