Fluorite and Esperite Physical Properties

Fluorite

Esperite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

slightly water soluble and in hot hydrochloric acid

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.254.28-4.42

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Octahedral, perfect on {111}, parting on {011}

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

1.7 Mohs Hardness

45-5.5

2 10

1.8 Chemical Composition

CaF₂

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

Fluorite and Esperite Chemical Formula

While comparing Fluorite and Esperite 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 Fluorite and Esperite chemical formula.

Chemical formula of Fluorite- CaF₂
Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)

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Fluorite and Esperite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorite and Esperite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorite and Esperite Optical Properties during the identification of gemstone. Specific gravity of Fluorite is 4.28-4.42 whereas that of Esperite is 4.28-4.42.