Herderite and Bertrandite Physical Properties

Herderite

Bertrandite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.90-3.022.59-2.60

1 7.18

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Fracture

Subconchoidal, Conchoidal

Cleavage

Indistinct on {110}

{001} Perfect, {110} Distinct, {101} Distinct

Mohs Hardness

5-5.56-7

2 10

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Chemical Composition

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

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Herderite and Bertrandite Chemical Formula

While comparing Herderite and Bertrandite 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 Bertrandite chemical formula.

Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Compare Colorless Gems

Herderite Vs Orthoclase

Herderite Vs Pectolite

Herderite Vs Phenakite

Herderite and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Herderite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Herderite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Herderite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.