Afghanite and Mellite Physical Properties

Afghanite

Mellite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.65

1.58-1.60

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle

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

1.6 Cleavage

Perfect {10 1 0}

{011} Imperfect

1.7 Mohs Hardness

5.5-6

1.8 Chemical Composition

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

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

Afghanite and Mellite Chemical Formula

While comparing Afghanite and Mellite 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 Afghanite and Mellite chemical formula.

Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

Compare Blue Gemstones

Afghanite Vs Hauyne

Afghanite Vs Glaucophane

Afghanite Vs Kainite

Afghanite and Mellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Mellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Mellite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 1.58-1.60 whereas that of Mellite is 1.58-1.60.

Blue Gemstones

Baryte

Vishnevite

Cavansite

Cordierite

Glaucophane

Hauyne