Herderite and Bustamite Physical Properties

Herderite

Bustamite

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Physical Properties

Tenacity

Solubility

Partly soluble in HCl.

Durability

Specific Gravity

2.90-3.023.32-3.43

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal

Cleavage

Indistinct on {110}

{100} perfect; {110} and {1 1 0} good; {010} poor

Mohs Hardness

5-5.55.5-6

2 10

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Chemical Composition

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

(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Herderite and Bustamite Chemical Formula

While comparing Herderite and Bustamite 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 Bustamite chemical formula.

Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Colorless Gems

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Herderite Vs Pectolite

Herderite Vs Phenakite

Herderite and Bustamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Herderite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Herderite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Herderite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.