Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.9-9999
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
{???} Indistinct
None
Mohs Hardness
4.53-4
2
10
👆🏻
Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Celestite, Andalusite, Feldspar, Dolomite, Gypsum, Halloysite, Kaolinite, Montmorillonite, Sepiolite, Smectite, Vermiculite