Esperite and Sylvite Physical Properties

Esperite

Sylvite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.28-4.421.993

1 7.18

1.5 Fracture

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

Uneven, Brittle

1.6 Cleavage

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

Perfect on [100], [010], [001]

1.7 Mohs Hardness

5-5.52.5

2 10

1.8 Chemical Composition

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

Not Available

Esperite and Sylvite Chemical Formula

While comparing Esperite and Sylvite 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 Sylvite chemical formula.

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

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Esperite and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Esperite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Esperite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Esperite is 1.993 whereas that of Sylvite is 1.993.