Esperite and Astrophyllite Physical Properties

Esperite

Astrophyllite

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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

4.28-4.42

3.2-3.4

1.5 Fracture

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

Uneven, Brittle, Metallic

1.6 Cleavage

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

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

5-5.5

1.8 Chemical Composition

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

(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Esperite and Astrophyllite Chemical Formula

While comparing Esperite and Astrophyllite 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 Astrophyllite chemical formula.

Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare White Gemstones

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Esperite Vs Hardystonite

Esperite Vs Hydrogrossular

Esperite and Astrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Esperite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Esperite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Esperite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.