1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.51-2.633.76-3.77
1
7.18
1.5 Fracture
Conchoidal, Conchoidal, Handbook of mineralogy (2001)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
Not Available
{110} Perfect, {110} Perfect
1.7 Mohs Hardness
1.8 Chemical Composition
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.