Forsterite and Goethite Physical Properties

Forsterite

Goethite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.23-3.264.27-4.29

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

2 10

1.8 Chemical Composition

Mg 2SiO 4Michael OâDonoghue , 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 OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

Compare Green Gemstones

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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.