Esperite and Black Opal Physical Properties

Esperite

Black Opal

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1 Physical Properties

1.1 Tenacity

Not Available

2.3 Solubility

Not Available

2.5 Durability

Not Available

2.6 Specific Gravity

4.28-4.421.97-2.22

1 7.18

2.7 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

2.8 Cleavage

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

Not Available

2.9 Mohs Hardness

5-5.56-6.5

2 10

2.15 Chemical Composition

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

SiO 2 + H 2OUlrich Henn and Claudio C.

Esperite and Black Opal Chemical Formula

While comparing Esperite and Black Opal 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 Black Opal chemical formula.

Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare White Gemstones

Esperite Vs Hackmanite

Esperite Vs Hardystonite

Esperite Vs Hydrogrossular

Esperite and Black Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Esperite and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Esperite and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Esperite is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.