Esperite and Montebrasite Physical Properties

Esperite

Montebrasite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

4.28-4.422.98-3.10

1 7.18

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Fracture

Conchoidal

Uneven, Conchoidal

Cleavage

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

{100} Perfect, {110} Good, {011} Distinct

Mohs Hardness

5-5.55.5-6

2 10

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Chemical Composition

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

LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

Esperite and Montebrasite Chemical Formula

While comparing Esperite and Montebrasite 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 Montebrasite chemical formula.

Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Montebrasite- LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

Compare White Gemstones

Esperite Vs Milarite

Esperite Vs Milk Opal

Esperite Vs Montebrasite

Esperite and Montebrasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Esperite and Montebrasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Esperite and Montebrasite Optical Properties during the identification of gemstone. Specific gravity of Esperite is 2.98-3.10 whereas that of Montebrasite is 2.98-3.10.