Prismatine and Ettringite Physical Properties

Prismatine

Ettringite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.34

1.77

1.5 Fracture

Not Available

1.6 Cleavage

{110} Perfect

Perfect on {10 1 0}

1.7 Mohs Hardness

Not Available

2-2.5

1.8 Chemical Composition

Not Available

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

Prismatine and Ettringite Chemical Formula

While comparing Prismatine 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 Prismatine and Ettringite chemical formula.

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

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Prismatine and Ettringite Specific Gravity

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