1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.5 Specific Gravity
1.8 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Not Available
1.9 Cleavage
Good in three directions
{???} Distinct, {???} Distinct, {???} Distinct
1.10 Mohs Hardness
1.11 Chemical Composition
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
LiFe3+ (PO 4)(OH)Anthony et al , Handbook of mineralogy (2001)