Foitite and Hiddenite Physical Properties

Foitite

Hiddenite

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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

3.173.15-3.21

1 7.18

1.5 Fracture

Handbook of mineralogy (2001)

Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

None

1,2 prismatic

1.7 Mohs Hardness

76-7

2 10

1.8 Chemical Composition

Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)

LiAlSi₂O₆

Foitite and Hiddenite Chemical Formula

While comparing Foitite and Hiddenite 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 Foitite and Hiddenite chemical formula.

Chemical formula of Foitite- Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Hiddenite- LiAlSi₂O₆

Compare Violet Gemstones

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Foitite and Hiddenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Foitite and Hiddenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Foitite and Hiddenite Optical Properties during the identification of gemstone. Specific gravity of Foitite is 3.15-3.21 whereas that of Hiddenite is 3.15-3.21.