Sector-Zoned Kaersutite in Camptonites from Morocco

Abdelkader Mokhtari and Danielle Velde
Laboratoire de Petrologie Minéralogique, Université P. et M. Curie, E3 Tour 26, 4 place Jussieu 75252, Paris Cedex 5, France

Abstract: Camptonites from the Taourirt region of Morocco contain kaersutite crystals that exhibit clear sector zoning. The electron microprobe reveals systematic variations between sectors, with preferential enrichment of Mg and Si in sector (011) and higher values for Fe, Ti and A1 in sectors (110) or (100). These differences are similar to those recorded in clinopyroxenes with hour-glass zoning where this type of crystallization has been known for more than a century.

Keywords: amphibole • kaersutite • sector zoning • Morocco

Mineralogical Magazine; March 1987 v. 51; no. 359; p. 151-156; DOI: 10.1180/minmag.1987.051.359.17
© 1987, The Mineralogical Society
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