Omphacite and Cuprite Physical Properties

Omphacite

Cuprite

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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

3.16-3.435.85-6.15

1 7.18

1.5 Fracture

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

Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

{110} Good, {110} Good

Fair in four directions forming octahedrons

1.7 Mohs Hardness

5-63.5-4

2 10

1.8 Chemical Composition

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

Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Omphacite and Cuprite Chemical Formula

While comparing Omphacite and Cuprite 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 Cuprite chemical formula.

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

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Omphacite and Cuprite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Omphacite and Cuprite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Omphacite and Cuprite Optical Properties during the identification of gemstone. Specific gravity of Omphacite is 5.85-6.15 whereas that of Cuprite is 5.85-6.15.