Cuprite and Ettringite Physical Properties

Cuprite

Ettringite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

5.85-6.151.77

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Fair in four directions forming octahedrons

Perfect on {10 1 0}

1.7 Mohs Hardness

3.5-42-2.5

2 10

1.8 Chemical Composition

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

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Cuprite and Ettringite Chemical Formula

While comparing Cuprite and Ettringite 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 Cuprite and Ettringite chemical formula.

Chemical formula of Cuprite- Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Cuprite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cuprite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cuprite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Cuprite is 1.77 whereas that of Ettringite is 1.77.