General Information:
Chemical Formula:
Fe+++(Mn,Fe++,Mg)(PO4)O
Composition:
(Molecular Weight = 218.97 gm)
Magnesium 1.11 % Mg
Manganese 15.05 % Mn
Iron 33.16 % Fe
Phosphorus 14.15 % P
Oxygen 36.53 % O
Empirical Formula:
Fe3+Mn2+0.6Fe2+0.3Mg0.1(PO4)O
Environment:
Related to triploidite and wolfeite.
IMA Status:
Approved IMA (Dana # Added)
Locality:
The Clementine II pegamtite, Okatjimukuja farm, Karibib, Namibia.
Name Origin:
Named after Josef Stanek (1928-1995), Professor of Mineralogy, Masarykov University, Brno, Czech Republic, a specialist in phosphate mineralogy.
Physical Properties:
Cleavage:
None
Color:
black.
Density:
3.8
Diaphaniety:
Opaque to subtranslucent
Habits:
Anhedral Grains - Granular minerals without the expression of crystal shapes, ,
Hardness:
4-5 - Fluorite-Apatite
Luminescence:
Non-fluorescent.
Luster:
Sub Metallic
Streak:
dark brown
More details...