Lepidocrocite and Ettringite Physical Properties

Lepidocrocite

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

41.77

1 7.18

1.5 Fracture

Uneven

Not Available

1.6 Cleavage

{010} Perfect

Perfect on {10 1 0}

1.7 Mohs Hardness

52-2.5

2 10

1.8 Chemical Composition

Not Available

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

Lepidocrocite and Ettringite Chemical Formula

While comparing Lepidocrocite 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 Lepidocrocite 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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Lepidocrocite and Ettringite Specific Gravity

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