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
1.5 Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Uneven, UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
[100] [001] perfect
perfect along [010] and [100]
1.7 Mohs Hardness
1.8 Chemical Composition
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references