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Jacobsite
Jacobsite

Black Opal
Black Opal



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Jacobsite
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Black Opal

Jacobsite and Black Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.76-5.03
Conchoidal
None
5.5-6.5
(Mn2+ ,Fe2+ ,Mg)(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.

Jacobsite and Black Opal Chemical Formula

While comparing Jacobsite 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 Jacobsite and Black Opal chemical formula.

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Jacobsite and Black Opal Specific Gravity

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