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Ludlamite
Ludlamite

Mottramite
Mottramite



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Ludlamite
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Mottramite

Ludlamite and Mottramite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.1-3.25.9
1 7.18
👆🏻

Fracture

-
Sub-Conchoidal

Cleavage

Vitreous, pearly on cleavage
None observed

Mohs Hardness

3-43
2 10
👆🏻

Chemical Composition

(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
PbCu(VO4)(OH)

Ludlamite and Mottramite Chemical Formula

While comparing Ludlamite and Mottramite 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 Mottramite 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 Mottramite- PbCu(VO4)(OH)

Ludlamite and Mottramite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ludlamite and Mottramite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite and Mottramite Optical Properties during the identification of gemstone. Specific gravity of Ludlamite is 5.9 whereas that of Mottramite is 5.9.