Abstract
Abstract X-ray diffraction of a natural high-cordierite (indialite) shows reflections not consistent with space group P 6/ mcc , which was previously accepted for high-cordierite. When inspected by polarizing microscopy, this crystal showed sectors and lamellae reminiscent of twinning. Microprobe analyses of crystals from the same specimen indicate about 0.1 K-atoms per formula unit of cordierite. Single crystals of synthetic potassium-bearing high-cordierite were prepared using two different methods. These revealed the same extra reflections. A structure refinement of the synthetic material in a number of space groups and subsequent comparison of R-values showed that there are three possible space-groups for K-bearing high-cordierite, P 6, P [unk] and P 3.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Zeitschrift für Kristallographie - Crystalline Materials
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.