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Ludlamite
Ludlamite

Bustamite
Bustamite



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Ludlamite
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Bustamite

Ludlamite and Bustamite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
Partly soluble in HCl.

Durability

-
-

Specific Gravity

3.1-3.23.32-3.43
1 7.18
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Fracture

-
Conchoidal

Cleavage

Vitreous, pearly on cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor

Mohs Hardness

3-45.5-6
2 10
👆🏻

Chemical Composition

(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Ludlamite and Bustamite Chemical Formula

While comparing Ludlamite 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 Ludlamite and Bustamite chemical formula.

  • Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Ludlamite and Bustamite Specific Gravity

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