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Mexican fire opal
Mexican fire opal

Siderite
Siderite



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Mexican fire opal
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Siderite

Mexican fire opal and Siderite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
None
-9999
SiO2·nH2O
 
Brittle
-
-
3.83-3.89
Uneven, Conchoidal
Perfect on {01 1 1}
3.5-4.5
Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mexican fire opal and Siderite Chemical Formula

While comparing Mexican fire opal and Siderite 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 Mexican fire opal and Siderite chemical formula.

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Mexican fire opal and Siderite Specific Gravity

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