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Forsterite
Forsterite

Creedite
Creedite



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Forsterite
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Creedite

Forsterite and Creedite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.23-3.262.70
1 7.18
👆🏻

Fracture

Conchoidal
Uneven, Conchoidal

Cleavage

Perfect on {010} imperfect on {100}
Perfect on {100}

Mohs Hardness

6.5-74.5
2 10
👆🏻

Chemical Composition

Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Forsterite and Creedite Chemical Formula

While comparing Forsterite and Creedite 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 Creedite chemical formula.

  • Chemical formula of Forsterite- Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Forsterite and Creedite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Forsterite and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Creedite Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 2.70 whereas that of Creedite is 2.70.