Legrandite and Fluorite Physical Properties

Legrandite

Fluorite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

slightly water soluble and in hot hydrochloric acid

1.3 Durability

Not Available

1.4 Specific Gravity

3.98-4.04

3.00-3.25

1.5 Fracture

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

Imperfect, poor one {100}

Octahedral, perfect on {111}, parting on {011}

1.7 Mohs Hardness

4.5-5

1.8 Chemical Composition

Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

CaF₂

Legrandite and Fluorite Chemical Formula

While comparing Legrandite and Fluorite 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 Legrandite and Fluorite chemical formula.

Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Fluorite- CaF₂

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Legrandite and Fluorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.