Herderite and Augelite Physical Properties

Herderite

Augelite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.90-3.022.70-2.75

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal

Cleavage

Indistinct on {110}

From the Greek for luster, for its pearly luster on the cleavage.

Mohs Hardness

5-5.54.5-5

2 10

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Chemical Composition

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

Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Herderite and Augelite Chemical Formula

While comparing Herderite and Augelite 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 Augelite chemical formula.

Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Colorless Gems

Herderite Vs Orthoclase

Herderite Vs Pectolite

Herderite Vs Phenakite

Herderite and Augelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Herderite and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Herderite and Augelite Optical Properties during the identification of gemstone. Specific gravity of Herderite is 2.70-2.75 whereas that of Augelite is 2.70-2.75.