Ajoite and Ettringite Physical Properties

Ajoite

Ettringite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Decomposed by acids

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

2.961.77

1 7.18

1.5 Fracture

Not Available

1.6 Cleavage

Perfect on {010}

Perfect on {10 1 0}

1.7 Mohs Hardness

52-2.5

2 10

1.8 Chemical Composition

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

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

Ajoite and Ettringite Chemical Formula

While comparing Ajoite 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 Ajoite and Ettringite chemical formula.

Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Ajoite and Ettringite Specific Gravity

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