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Ferri-ottoliniite

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Formula:
◻{NaLi}{Mg3Fe23+}(Si8O22)(OH)2
System:
Monoclinic
Colour:
Black
Name:
Ottoliniite was named for Luisa Ottolini (Pavia, Italy) to acknowledge her contribution to crystal-chemical studies of minerals, and particularly of amphiboles.
Synonym:
Ferri-ottoliniite was approved as a new mineral in 2001. In the 2012 amphibole nomenclature, it's compposition is considered intermediate between clino-ferri-holmquistite and magnesio-riebeckite, and the ottoliniite root name is discredited.

The holotype material, A(K0.07Na0.38)B(Na0.70Li1.24Ca0.06)C(Mg1.35Fe2+0.92Mn2+0.13 Zn0.31Fe3+1.71Al0.10Ti0.06Li0.42) Si8 O22 (OH1.51F0.47). has Li>Na in the B position and is consequently considered a clino-ferri-holmquistite.

References for Ferri-ottoliniite

Reference List:
Oberti, R., F. Cámara, & J.M. Caballero (2004), Ferri-ottoliniite and ferriwhittakerite, two new end-members of the new Group 5 for monoclinic amphiboles: American Mineralogist: 88: 888-893.

Frank C. Hawthorne, Roberta Oberti, George E. Harlow, Walter V. Maresch, Robert F. Martin, John C. Schumacer, Mark D. Welch (2012): Nomenclature of the amphibole supergroup, American Mineralogist, Volume 97, pages 2031–2048

Internet Links for Ferri-ottoliniite

Localities for Ferri-ottoliniite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Spain
 
  • Madrid
    • Manzanares el Real
Oberti, R., F. Cámara, & J.M. Caballero (2004), Ferri-ottoliniite and ferriwhittakerite, two new end-members of the new Group 5 for monoclinic amphiboles: American Mineralogist: 88: 888-893.
Mineral and/or Locality  
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