Omphacite and Dumortierite Physical Properties

Omphacite

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

3.16-3.433.26-3.41

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

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

1.6 Cleavage

{110} Good, {110} Good

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

1.7 Mohs Hardness

5-67-8.5

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

AlAl₆O₃BSi₃O₁₈

Omphacite and Dumortierite Chemical Formula

While comparing Omphacite 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 Omphacite and Dumortierite chemical formula.

Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Omphacite and Dumortierite Specific Gravity

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