Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.65-4.552.6-3.3
1
7.18
👆🏻
Fracture
Conchoidal
Lamellar
Cleavage
None, but may exhibit slight parting
Perfect 001
Mohs Hardness
7.5-82-2.5
2
10
👆🏻
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
(Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6