Holmquistite and Almandine Physical Properties

Holmquistite

Almandine

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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

2.95-3.13

3.95-4.30

1.5 Fracture

Not Available

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

1.6 Cleavage

{210} Perfect

none

1.7 Mohs Hardness

5-6

7-7.5

1.8 Chemical Composition

Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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

Holmquistite and Almandine Chemical Formula

While comparing Holmquistite 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 Holmquistite and Almandine chemical formula.

Chemical formula of Holmquistite- Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Holmquistite and Almandine Specific Gravity

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