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Ferri-Obertiite - Rothenberg, Bell, Mendig, Mayen-Koblenz District, Rhineland-Palatinate, Germany (Type Locality)
(#:MINS8381)
Extremely rare Ferri-obertiite in Light brown / beige needles.
Formula :
NaNa
2
(Mg
3
Fe
3+
Ti)Si
8
O
22
O
2
System:
monoclinic
Hardness:
5
Rarity:
extremely rare
Strunz id:VII/B.39-120 - ORGANIC COMPOUNDS
Name origin:
The obertiite root name is for Prof. Roberta Oberti (born 1952 in Milan, Italy), University of Pavia, Italy, for her contributions to the crystal chemistry of amphiboles.
Specimen weight:8 gr.
Crystal size:sub-mm
Overall size: 30mm x 25 mm x 16 mm
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