Herderite and Legrandite Physical Properties

Herderite

Legrandite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.90-3.023.98-4.04

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal

Cleavage

Indistinct on {110}

Imperfect, poor one {100}

Mohs Hardness

5-5.54.5-5

2 10

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Chemical Composition

CaBePO 4(F,OH)Ulrich Henn and Claudio C.

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

Herderite and Legrandite Chemical Formula

While comparing Herderite 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 Herderite and Legrandite chemical formula.

Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Colorless Gems

Herderite Vs Orthoclase

Herderite Vs Pectolite

Herderite Vs Phenakite

Herderite and Legrandite Specific Gravity

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