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Ferri-katophorite, Eudialyte, Microcline

Ferri-katophorite : Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2, Eudialyte : Na15Ca6(Fe2+,Mn2+)3Zr3[Si25O73](O,OH,H2O)3(OH,Cl)2, Microcline : KAlSi3O8
minID: CKQ-679

Photo Copyright © Pavel M. Kartashov collection & photo  - This image is copyrighted. Unauthorized reproduction prohibited.

Double-terminated short-prismatic crystal of titanoan (2.17 % TiO2) Magnesioferrikatophorite from a nephelin-syenite pegmatite. Composition of the mineral is (Na0.48K0.22)0.85(Na1.06Ca0.94)2.00(Mg3.11Fe2+0.77Mn0.12)4.00(Fe3+0.87Ti0.13)1.00[(Si7.12Al0.77Ti0.11)8.00O22](OH)2. FOV is ~ 12x10 mm. Collected by Dmitrii Krinov in August of 2003. Pavel M. Kartashov collection (#2083), analytical data and photo.

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Photo added: 16th Sep 2007

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