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Forsterite
Forsterite

Goethite
Goethite



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Forsterite
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Goethite

Forsterite and Goethite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
HCl soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.23-3.264.27-4.29
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
1.6 Cleavage
Perfect on {010} imperfect on {100}
Perfect {010}
1.7 Mohs Hardness
6.5-75-5.5
Amber
2 10
1.8 Chemical Composition
Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
FeO(OH)Arthur Thomas , Gemstones (2009)

Forsterite and Goethite Chemical Formula

While comparing Forsterite and Goethite 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 Forsterite and Goethite chemical formula.

  • Chemical formula of Forsterite- Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

Forsterite and Goethite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Forsterite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.