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Mineral ExchangesThorikosite for study
14th Sep 2018 11:13 UTCNatale Perchiazzi
I am looking for thorikosite crystals suitable for X-ray single crystal structural study. Good features are transparent clear individuals with dimensions greater than 0.1 mm. Your help is greatly appreciated!
best withes Natale Perchiazzi
Earth Science Department
Pisa University, Italy
14th Sep 2018 13:12 UTCUwe Kolitsch Manager
I have an unpublished structure refinement of thorikosite (in I4/mmm, R = 4.4%), that strongly suggests that the structure is only pseudotetragonal (+ additional twinning?); unrestrained unit-cell parameters are: 3.90878 3.92637 12.89082 90.032 89.996 89.997. I never tried other space-group symmetries, though.
The flattened crystal morphology also seems to contradict tetragonal symmetry.
Feel free to contact me by email for more details.
Ciao, Uwe
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 23, 2024 23:04:42