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Tantalite
Tantalite

Ludlamite
Ludlamite



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Tantalite
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Ludlamite

Tantalite and Ludlamite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

5.23.1-3.2
1 7.18
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Fracture

Subconchoidal, Conchoidal
-

Cleavage

Good in one direction
Vitreous, pearly on cleavage

Mohs Hardness

6-6.53-4
2 10
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Chemical Composition

(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Tantalite and Ludlamite Chemical Formula

While comparing Tantalite and Ludlamite 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 Ludlamite chemical formula.

  • Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
  • Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Tantalite and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tantalite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tantalite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Tantalite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.