Sylvite and Esperite Physical Properties

Sylvite

Esperite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.9934.28-4.42

1 7.18

1.5 Fracture

Uneven, Brittle

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

2.55-5.5

2 10

1.8 Chemical Composition

Not Available

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

Sylvite and Esperite Chemical Formula

While comparing Sylvite 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 Sylvite and Esperite chemical formula.

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

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Sylvite and Esperite Specific Gravity

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