Rossmanite and Tantalite Physical Properties

Rossmanite

Tantalite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

35.2

1 7.18

1.5 Fracture

Brittle, Metallic

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

None

Good in one direction

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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

Rossmanite and Tantalite Chemical Formula

While comparing Rossmanite and Tantalite 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 Rossmanite and Tantalite chemical formula.

Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references

Compare Gems Found in America

Rossmanite Vs Serandite

Rossmanite Vs Scolecite

Rossmanite Vs Serpentine

Rossmanite and Tantalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rossmanite and Tantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rossmanite and Tantalite Optical Properties during the identification of gemstone. Specific gravity of Rossmanite is 5.2 whereas that of Tantalite is 5.2.