Phenakite and Ettringite Physical Properties

Phenakite

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

2.90-2.981.77

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle

Not Available

1.6 Cleavage

Distinct on {11 2 0}, imperfect on {10 1 1}

Perfect on {10 1 0}

1.7 Mohs Hardness

7.5-82-2.5

2 10

1.8 Chemical Composition

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Phenakite and Ettringite Chemical Formula

While comparing Phenakite 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 Phenakite and Ettringite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael 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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Phenakite and Ettringite Specific Gravity

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