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Obsidian
Obsidian

Ludlamite
Ludlamite



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Obsidian
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Ludlamite

Obsidian and Ludlamite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.35-2.603.1-3.2
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Conchoidal
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
Not Available
Vitreous, pearly on cleavage
1.7 Mohs Hardness
5-5.53-4
Amber
2 10
1.8 Chemical Composition
Not Available
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Obsidian and Ludlamite Chemical Formula

While comparing Obsidian 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 Obsidian and Ludlamite chemical formula.

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

Obsidian and Ludlamite Specific Gravity

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