Esperite and Dumortierite Physical Properties

Esperite

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

4.28-4.423.26-3.41

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Distinct on [010] and [100] poor on [101]

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

1.7 Mohs Hardness

5-5.57-8.5

2 10

1.8 Chemical Composition

PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)

AlAl₆O₃BSi₃O₁₈

Esperite and Dumortierite Chemical Formula

While comparing Esperite 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 Esperite and Dumortierite chemical formula.

Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Esperite and Dumortierite Specific Gravity

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