Ettringite and Azurmalachite Physical Properties

Ettringite

Azurmalachite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Partially soluble in water

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.773.70-3.95

1 7.18

1.5 Fracture

Not Available

ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)

1.6 Cleavage

Perfect on {10 1 0}

1,1 basal.

1.7 Mohs Hardness

2-2.53.5-4

2 10

1.8 Chemical Composition

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

(Cu) 3(OH) 2(CO 3) 2 + Cu 2(CO 3)(OH) 2Gemdat.org , Management Team (2012)

Ettringite and Azurmalachite Chemical Formula

While comparing Ettringite and Azurmalachite 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 Azurmalachite chemical formula.

Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Azurmalachite- (Cu) 3(OH) 2(CO 3) 2 + Cu 2(CO 3)(OH) 2Gemdat.org , Management Team (2012)

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Ettringite and Azurmalachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Azurmalachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Azurmalachite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 3.70-3.95 whereas that of Azurmalachite is 3.70-3.95.