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Mexican fire opal
Mexican fire opal

Herderite
Herderite



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Mexican fire opal
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Herderite

Mexican fire opal and Herderite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

-99992.90-3.02
1 7.18
👆🏻

Fracture

-
Subconchoidal, Conchoidal

Cleavage

None
Indistinct on {110}

Mohs Hardness

-99995-5.5
2 10
👆🏻

Chemical Composition

SiO2·nH2O
CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Mexican fire opal and Herderite Chemical Formula

While comparing Mexican fire opal and Herderite 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 Herderite chemical formula.

  • Chemical formula of Mexican fire opal- SiO2·nH2O
  • Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Mexican fire opal and Herderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mexican fire opal and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mexican fire opal and Herderite Optical Properties during the identification of gemstone. Specific gravity of Mexican fire opal is 2.90-3.02 whereas that of Herderite is 2.90-3.02.