1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.13 Fracture
Uneven, Conchoidal, Conchoidal to uneven, Brittle
Sub-Conchoidal, Irregular/uneven, Sub-Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.14 Cleavage
On {10 1 1} perfect; parting on {10 1 2}
[100] Perfect, [110] Good, [011] Distinct
1.15 Mohs Hardness
1.16 Chemical Composition
MnCO3
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references