Forsterite and Purpurite Physical Properties

Forsterite

Purpurite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.23-3.263.2-3.4

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Perfect on {010} imperfect on {100}

[100] [001] perfect

1.7 Mohs Hardness

6.5-74-4.5

2 10

1.8 Chemical Composition

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Forsterite and Purpurite Chemical Formula

While comparing Forsterite and Purpurite 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 Purpurite chemical formula.

Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Compare Green Gemstones

Forsterite Vs Grossular

Forsterite Vs Grandidierite

Forsterite Vs Hackmanite

Forsterite and Purpurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Forsterite and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.