Dumortierite and Marialite Physical Properties

Dumortierite

Marialite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.412.50

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

Distinct on {100} and {110}

1.7 Mohs Hardness

7-8.55.5-6

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)

Dumortierite and Marialite Chemical Formula

While comparing Dumortierite and Marialite 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 Marialite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)

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Dumortierite and Marialite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Marialite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Marialite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.50 whereas that of Marialite is 2.50.