Ettringite and Albite Physical Properties

Ettringite

Albite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Partially soluble in water

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.772.60-2.65

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

1.6 Cleavage

Perfect on {10 1 0}

Perfect on {001}, very good on {010}, imperfect on {110}

1.7 Mohs Hardness

2-2.56-6.5

2 10

1.8 Chemical Composition

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

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Ettringite and Albite Chemical Formula

While comparing Ettringite and Albite 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 Ettringite and Albite chemical formula.

Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Ettringite and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Albite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 2.60-2.65 whereas that of Albite is 2.60-2.65.