Donate now to keep alive!Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
What is a mineral?The most common minerals on earthMineral PhotographyThe Elements and their MineralsGeological TimeMineral Evolution
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Dolní Bory sekaninaite gallery

Posted by Jakub Jirásek  
Jakub Jirásek July 20, 2012 08:28AM

I believe at least some of the pictures of sekaninaite from Dolní Bory pegmatite present other minerals instead.

Photo ID: 219664 - definitely something else. In case there is a sekaninaite on the other side of the sample, it might be product of sekaninaite decomposition along (001) plane, probably a mixture of chlorite and siderophyllite

Photo ID: 150948 - totally altered sekaninaite, i.e. pseudomorphose (muscovite, clay minerals, rarely feldspar) after sekaninaite

Photo ID: 326599 - it is a problem to tell what is on the picture thanks to its poor quality actually

Photos ID: 23397 & 23398 & 150947 - The same as for picture 219664. Those are sekaninaites for sure, but in all cases the picture present just decomposition minerals along (001) planes and not the sekaninaite itself. I am not sure if they really belong to the gallery of this mineral, If yes, their description should be changed.

Keep in mind that sekaninaite should be deep blue to violet vith vitreous lustre. Other cases (specially at Dolní Bory) are alteration product, which are found very often.

Peter Haas July 21, 2012 09:16AM
Messages sent.
Paul Bongaerts July 21, 2012 01:36PM

can you delete picture 23398 and 23397 ? i tried it but dont know how to delete older pictures. Thanks for pointing this out to me !!

Sorry, only registered users may post in this forum.

Click here to login

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2018, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 16, 2018 17:16:02
Go to top of page