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November-December 2012

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Who's Who in Mineral Names: Alexander Khomyakov (b. 1933)

Khomyakovite, ideally Na12Sr3Ca6Fe3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2, and its manganese analogue manganokhomyakovite, ideally Na12Sr3Ca6Mn3Zr3W(Si25O73) (O,OH,H2O)3(OH,Cl)2, are two mineral species of the eudialyte group described from the world-renowned mineral locality Mont Saint-Hilaire, Quebec, Canada (Johnsen et al. 1999). They were named by Danish (Ole Johnsen) and Canadian (Robert A. Gault, Joel D. Grice, and T. Scott Ercit) mineralogists in honor of Dr. Alexander Petrovich Khomyakov of the Institute of Mineralogy, Geochemistry and Crystal Chemistry of Rare Elements, Moscow, Russia, for his extensive contributions to the mineralogy and geochemistry of alkaline rocks, in particular those of agpaitic character. Both new zirconosilicates are confined to miarolitic cavities in nepheline syenites.

Dr. Frank C. Hawthorne is Canada Research Chair in Crystallography and Mineralogy at the University of Manitoba. He was recipient of the 2008 Carnegie Mineralogical Award and the 2009 International Mineralogical Association Medal for excellence in mineralogical research.

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