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Crystal System:
Magnesiosadanagite was defined by Shimazaki et.al(1984) as an Al rich amphibole with K>Na and Mg>Fe2+. In the 1997 amphibole nomenclature ( Leake et. al) magnesiosadanagaite was redefined with Na>K, so that the mineral originally described as magnesiosadanagaite became potassic-magnesiosadanagaite.

In the 2012 amphibole nomenclature, the sadanagaite group was redefined to be the Na, Mg and Al dominant member of the group, thus obsoleting the name magnesio pre-fix for sadanagaite group minerals.
This page provides mineralogical data about Potassic-Magnesiosadanagaite.

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References for Potassic-MagnesiosadanagaiteHide

Reference List:
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Michiaki Bunno, Hidehiko Shmazaki, Tohru Ozawa: (1984): Sadanagaite and magnesio-sadanagaite, new silica-poor members of calcic amphibole from Japan, American Mineralogist, Volume 69, pages 465-471
CNMMN amphibole subcommittee, Bernard E, Leake (Chairman) et al. (1997): Nomenclature of amphiboles: report of the subcommittee on amphiboles of the International Mineralogical Association, Commission on new minerals and mineral names. The Canadian Mineralogist Vol. 35, pp. 219-246
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 Potassic-MagnesiosadanagaiteHide

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