Omphacite and Crocoite Physical Properties

Omphacite

Crocoite

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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

3.16-3.435.90-6.10

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).

1.6 Cleavage

{110} Good, {110} Good

{110} Distinct, {001} Indistinct, {100} Indistinct

1.7 Mohs Hardness

5-62.5-3

2 10

1.8 Chemical Composition

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

PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Omphacite and Crocoite Chemical Formula

While comparing Omphacite and Crocoite 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 Crocoite chemical formula.

Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Crocoite- PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Omphacite and Crocoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Omphacite and Crocoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Omphacite and Crocoite Optical Properties during the identification of gemstone. Specific gravity of Omphacite is 5.90-6.10 whereas that of Crocoite is 5.90-6.10.