Forsterite and Creedite Physical Properties

Forsterite

Creedite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.23-3.262.70

1 7.18

1.5 Fracture

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

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Perfect on {010} imperfect on {100}

Perfect on {100}

1.7 Mohs Hardness

6.5-74.5

2 10

1.8 Chemical Composition

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

Compare Green Gemstones

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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.