Bastnasite and Black Opal Physical Properties

Bastnasite

Black Opal

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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

4.95-5.01.97-2.22

1 7.18

1.7 Fracture

Uneven

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

1.8 Cleavage

Imperfect to indistinct on {10 1 0}, parting on {0001}

Not Available

1.10 Mohs Hardness

4-56-6.5

2 10

1.13 Chemical Composition

(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

SiO 2 + H 2OUlrich Henn and Claudio C.

Bastnasite and Black Opal Chemical Formula

While comparing Bastnasite 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 Bastnasite and Black Opal chemical formula.

Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Bastnasite and Black Opal Specific Gravity

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