Dumortierite and Dolomite Physical Properties

Dumortierite

Dolomite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Poorly soluble in dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.412.80-2.95

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

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

Perfect on {10 1 1}, rhombohedral cleavage

1.7 Mohs Hardness

7-8.53.5-4

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Dumortierite and Dolomite Chemical Formula

While comparing Dumortierite and Dolomite 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 Dolomite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dumortierite and Dolomite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Dolomite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Dolomite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.80-2.95 whereas that of Dolomite is 2.80-2.95.