Mellite and Ettringite Physical Properties

Mellite

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

1.58-1.601.77

1 7.18

1.5 Fracture

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Not Available

1.6 Cleavage

{011} Imperfect

Perfect on {10 1 0}

1.7 Mohs Hardness

22-2.5

2 10

1.8 Chemical Composition

Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

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

Mellite and Ettringite Chemical Formula

While comparing Mellite 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 Mellite and Ettringite chemical formula.

Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Brown Gemstones

Mellite Vs Narsarsukite

Mellite Vs Mother of Pearl

Mellite Vs Morion

Mellite and Ettringite Specific Gravity

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