Gedrite and Dumortierite Physical Properties

Gedrite

Dumortierite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.15-3.2593.26-3.41

1 7.18

1.5 Fracture

Not Available

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

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

Distinct on {100}, poor on {110}; parting on {001}

1.7 Mohs Hardness

5.5-67-8.5

2 10

1.8 Chemical Composition

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

AlAl₆O₃BSi₃O₁₈

Gedrite and Dumortierite Chemical Formula

While comparing Gedrite and Dumortierite 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 Dumortierite 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 Dumortierite- AlAl₆O₃BSi₃O₁₈

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Gedrite and Dumortierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gedrite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gedrite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Gedrite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.