FIRST OCCURRENCE OF Mn-DOMINANT CORDIERITE-GROUP MINERAL: ELECTRON MICROPROBE AND LASER ABLATION ICP-MS

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Authors	SZUSZKIEWICZ Adam PIECZKA Adam GADAS Petr VASINOVA-GALIOVA Michaela SZELUG Eucrusz GOLEBIOWSKA Bozena GALUSKOVA Dagmar
Year of publication	2019
Type	Article in Periodical
Magazine / Source	Canadian Mineralogist
MU Faculty or unit	Faculty of Science
Citation
web	https://doi.org/10.3749/canmin.AB00027
Doi	https://doi.org/10.3749/canmin.AB00027
Keywords	cordierite-group; new mineral; granitic pegmatite; Szklary; Sudetes
Description	Cordierite-group minerals (CGM): cordierite, Mg2[Al4Si5O18], and sekaninaite, Fe2[Al4Si5O18], form a solid solution defined by the VI(Mg<->Fe2+) substitution. They are characteristic components in aluminous metamorphic and magmatic rocks including some granites and granitic pegmatites. They are framework silicates with six-membered rings of corner-sharing T2 tetrahedra linked by additional T1 tetrahedra, the octahedral M-sites and channel sites (Ch). Typically, the natural samples contain minor Mn, Be, Li, and Zn as well as channel cations and volatiles.
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