Austinite and Ludlamite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Easily soluble in cold dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.12
3.1-3.2
Fracture
Brittle, Uneven, Brittle, Uneven
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Cleavage
Good in two directions parallel to the prism faces {110}
Vitreous, pearly on cleavage
Chemical Composition
CaZn(AsO4)(OH)
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Austinite and Ludlamite Chemical Formula
While comparing Austinite 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 Austinite and Ludlamite chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Austinite and Ludlamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.