Omphacite and Creedite Physical Properties

Omphacite

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

3.16-3.432.70

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{110} Good, {110} Good

Perfect on {100}

1.7 Mohs Hardness

5-64.5

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Omphacite and Creedite Chemical Formula

While comparing Omphacite 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 Omphacite and Creedite chemical formula.

Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Compare Green Gemstones

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Omphacite Vs Pleonaste

Omphacite Vs Prase Opal

Omphacite and Creedite Specific Gravity

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