Plumbogummite and Legrandite Physical Properties

Plumbogummite

Legrandite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.0143.98-4.04

1 7.18

1.5 Fracture

Uneven, Conchoidal

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

None

Imperfect, poor one {100}

1.7 Mohs Hardness

4-54.5-5

2 10

1.8 Chemical Composition

Not Available

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

Plumbogummite and Legrandite Chemical Formula

While comparing Plumbogummite and Legrandite 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 Plumbogummite and Legrandite chemical formula.

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

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Plumbogummite and Legrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Plumbogummite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Plumbogummite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Plumbogummite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.