Tenacity
-
-
Solubility
Partially soluble in water
-
Durability
-
-
Specific Gravity
1.774.95-5.0
1
7.18
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Fracture
-
Uneven
Cleavage
Perfect on {10 1 0}
Imperfect to indistinct on {10 1 0}, parting on {0001}
Mohs Hardness
2-2.54-5
2
10
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Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references