Ludlamite and Polyhalite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.1-3.2
2.78
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Brittle
Cleavage
Vitreous, pearly on cleavage
Perfect on {10 1 }; parting on {010}
Chemical Composition
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Not Available
Ludlamite and Polyhalite Chemical Formula
While comparing Ludlamite and Polyhalite 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 Polyhalite chemical formula.
- Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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Ludlamite and Polyhalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ludlamite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Ludlamite is 2.78 whereas that of Polyhalite is 2.78.