Anthophyllite and Dumortierite Physical Properties

Anthophyllite

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

2.9-3.5

3.26-3.41

1.5 Fracture

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

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

1.6 Cleavage

{110} Perfect, {???} Distinct, {???} Distinct

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

1.7 Mohs Hardness

5.5-6

7-8.5

1.8 Chemical Composition

(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

AlAl₆O₃BSi₃O₁₈

Anthophyllite and Dumortierite Chemical Formula

While comparing Anthophyllite 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 Anthophyllite and Dumortierite chemical formula.

Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Anthophyllite and Dumortierite Specific Gravity

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