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Mottramite
Mottramite

Forsterite
Forsterite



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Mottramite
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Forsterite

Mottramite and Forsterite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.93.23-3.26
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Conchoidal

Cleavage

None observed
Perfect on {010} imperfect on {100}

Mohs Hardness

36.5-7
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Mottramite and Forsterite Chemical Formula

While comparing Mottramite and Forsterite 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 Forsterite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Forsterite- Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Mottramite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.