Dumortierite and Epidote Physical Properties

Dumortierite

Epidote

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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

3.26-3.413.25-3.50

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

{001} perfect and {100} imperfect

1.7 Mohs Hardness

7-8.56-7

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Dumortierite and Epidote Chemical Formula

While comparing Dumortierite and Epidote 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 Dumortierite and Epidote chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Epidote- CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dumortierite and Epidote Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Epidote Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Epidote Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.25-3.50 whereas that of Epidote is 3.25-3.50.