Physical Properties
Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.76-3.772.67-2.73
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
{110} Perfect, {110} Perfect
Perfect on [10 1 1] three directions with angle of 74° 55
Mohs Hardness
5-63
2
10
👆🏻
Chemical Composition
(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.
CaCO 3Ulrich Henn and Claudio C.