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Riebeckite
Riebeckite

Forsterite
Forsterite



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Riebeckite
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Forsterite

Riebeckite and Forsterite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.28-3.443.23-3.26
1 7.18
👆🏻

Fracture

Uneven, Splintery
Conchoidal

Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
Perfect on {010} imperfect on {100}

Mohs Hardness

5.0-6.06.5-7
2 10
👆🏻

Chemical Composition

Na2Fe2+3Fe3+2Si8O22(OH)2
Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Riebeckite and Forsterite Chemical Formula

While comparing Riebeckite 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 Riebeckite and Forsterite chemical formula.

  • Chemical formula of Riebeckite- Na2Fe2+3Fe3+2Si8O22(OH)2
  • Chemical formula of Forsterite- Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Riebeckite and Forsterite Specific Gravity

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