Dumortierite and Humite Physical Properties

Dumortierite

Humite

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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

3.26-3.413.20-3.32

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), Conchoidal

1.6 Cleavage

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

Poor

1.7 Mohs Hardness

7-8.56-6.5

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)

Dumortierite and Humite Chemical Formula

While comparing Dumortierite and Humite 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 Humite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Humite- (Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)

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Dumortierite and Humite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Humite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Humite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.20-3.32 whereas that of Humite is 3.20-3.32.