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Franklinite
Franklinite

Black Opal
Black Opal



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Franklinite
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Black Opal

Franklinite and Black Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
5.05-5.22
Uneven
None
5.5-6
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
 
-
-
-
1.97-2.22
Conchoidal
None
6-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.

Franklinite and Black Opal Chemical Formula

While comparing Franklinite 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 Franklinite and Black Opal chemical formula.

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Franklinite and Black Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Franklinite and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite Vs Black Opal during the identification of gemstone. Specific gravity of Franklinite is whereas that of Black Opal is .