Gaylussite and Almandine Physical Properties

Gaylussite

Almandine

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

decomposes in water

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.93-1.99

3.95-4.30

1.5 Fracture

Conchoidal, Conchoidal, Brittle

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

1.6 Cleavage

perfect [110]

none

1.7 Mohs Hardness

2.5

7-7.5

1.8 Chemical Composition

Na2Ca(CO3)2•5(H2O)

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Gaylussite and Almandine Chemical Formula

While comparing Gaylussite and Almandine 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 Gaylussite and Almandine chemical formula.

Chemical formula of Gaylussite- Na2Ca(CO3)2•5(H2O)
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Gaylussite and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gaylussite and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gaylussite and Almandine Optical Properties during the identification of gemstone. Specific gravity of Gaylussite is 3.95-4.30 whereas that of Almandine is 3.95-4.30.