Tantalite and Herderite Physical Properties

Tantalite

Herderite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

5.22.90-3.02

1 7.18

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Fracture

Subconchoidal, Conchoidal

Cleavage

Good in one direction

Indistinct on {110}

Mohs Hardness

6-6.55-5.5

2 10

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Chemical Composition

(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references

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

Tantalite and Herderite Chemical Formula

While comparing Tantalite and Herderite 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 Tantalite and Herderite chemical formula.

Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

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Tantalite and Herderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tantalite and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tantalite and Herderite Optical Properties during the identification of gemstone. Specific gravity of Tantalite is 2.90-3.02 whereas that of Herderite is 2.90-3.02.