1 Physical Properties
1.2 Tenacity
Not Available
Not Available
1.5 Solubility
Not Available
Not Available
1.7 Durability
Not Available
Not Available
1.9 Specific Gravity
2.30-2.403.55-3.70
1
7.18
1.14 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Gemstones (2009)
1.15 Cleavage
{110} Perfect
Not Available
1.16 Mohs Hardness
1.17 Chemical Composition
Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)
Al 2SiO 5Arthur Thomas , Gemstones (2009) More from other references