Legrandite and Apophyllite Physical Properties

Legrandite

Apophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.98-4.042.30-2.50

1 7.18

1.5 Fracture

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Imperfect, poor one {100}

Perfect on (001)

1.7 Mohs Hardness

4.5-54.5-5

2 10

1.8 Chemical Composition

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

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Legrandite and Apophyllite Chemical Formula

While comparing Legrandite and Apophyllite 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 Apophyllite 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 Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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Legrandite and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.