IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery
bannerbannerbannerbannerbannerbanner

Thorikosite for study

Posted by Natale Perchiazzi  
avatar
Natale Perchiazzi September 14, 2018 11:13AM
Dear All,
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
avatar
Uwe Kolitsch September 14, 2018 01:12PM
Hi Natale,
I have an unpublished structure refinement of thorikosite (in I4/mmm, R = 4.4%), that strongly suggests that the structure is only pseudotetragonal (+ additional twinning?);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
Sorry, only registered users may post in this forum.

Click here to login



bannerbannerbannerbannerbannerbanner
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 26, 2018 15:37:58
Go to top of page