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Mottramite
Mottramite

Herderite
Herderite



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Mottramite
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Herderite

Mottramite and Herderite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.92.90-3.02
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Subconchoidal, Conchoidal

Cleavage

None observed
Indistinct on {110}

Mohs Hardness

35-5.5
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Mottramite and Herderite Chemical Formula

While comparing Mottramite 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 Mottramite and Herderite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Mottramite and Herderite Specific Gravity

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