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

• Autoři: SZUSZKIEWICZ Adam; PIECZKA Adam; GADAS Petr; VASINOVA-GALIOVA Michaela; SZELUG Eucrusz; GOLEBIOWSKA Bozena; GALUSKOVA Dagmar
• Rok publikování: 2019
• Druh: Článek v odborném periodiku
• Časopis / Zdroj: Canadian Mineralogist
• Fakulta / Pracoviště MU: Přírodovědecká fakulta
• www: https://doi.org/10.3749/canmin.AB00027
• Doi: http://dx.doi.org/10.3749/canmin.AB00027
• Klíčová slova: cordierite-group; new mineral; granitic pegmatite; Szklary; Sudetes
• Popis: 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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