Ettringite and Diaspore Physical Properties

Ettringite

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Partially soluble in water

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

1.773.30-3.40

1 7.18

1.5 Fracture

Not Available

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Perfect on {10 1 0}

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

2-2.56.5-7

2 10

1.8 Chemical Composition

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Ettringite and Diaspore Chemical Formula

While comparing Ettringite and Diaspore 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 Diaspore chemical formula.

Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Ettringite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.