Dumortierite and Forsterite Physical Properties

Dumortierite

Forsterite

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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

3.26-3.413.23-3.26

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

Perfect on {010} imperfect on {100}

1.7 Mohs Hardness

7-8.56.5-7

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Dumortierite and Forsterite Chemical Formula

While comparing Dumortierite and Forsterite 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 Forsterite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Dumortierite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.