Nepheline and Mellite Physical Properties

Nepheline

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

2.55-2.651.58-1.60

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

[1010] Poor

{011} Imperfect

1.7 Mohs Hardness

5-62

2 10

1.8 Chemical Composition

Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

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

Nepheline and Mellite Chemical Formula

While comparing Nepheline 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 Nepheline and Mellite chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

Compare Red Gemstones

Nepheline Vs Prase Opal

Nepheline Vs Pyrope Spessartine

Nepheline Vs Pyrope

Nepheline and Mellite Specific Gravity

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