Ludlamite and Obsidian Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.1-3.2
2.35-2.60
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Conchoidal, ConchoidalWalter Schumann, Conchoidal
Cleavage
Vitreous, pearly on cleavage
Not Available
Chemical Composition
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Not Available
Ludlamite and Obsidian Chemical Formula
While comparing Ludlamite and Obsidian 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 Obsidian 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 Obsidian Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ludlamite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Ludlamite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.