Jacobsite and Gedrite Physical Properties

Jacobsite

Gedrite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

4.76-5.033.15-3.259

1 7.18

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Fracture

Conchoidal

Cleavage

None

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

Mohs Hardness

5.5-6.55.5-6

2 10

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Chemical Composition

(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

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

Jacobsite and Gedrite Chemical Formula

While comparing Jacobsite 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 Jacobsite and Gedrite chemical formula.

Chemical formula of Jacobsite- (Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Compare Brown Gemstones

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Jacobsite and Gedrite Specific Gravity

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