We use cookies to show content based on your preferences. If you continue to browse you accept their use and installation. More information. >

FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences

FMF English Forum is moderated by John S. White and Peter Megaw
 

Spanish message board






Newest topics and users posts
23 Aug-07:09:27 Re: what have i found? (Steveb)
23 Aug-05:08:35 Re: what have i found? (Navieko)
23 Aug-04:38:00 Re: what have i found? (Steveb)
23 Aug-04:20:41 Re: what have i found? (Navieko)
22 Aug-22:18:39 The mizunaka collection - quartz (Am Mizunaka)
22 Aug-14:22:30 Re: don lum collection (Don Lum)
21 Aug-22:36:16 Re: stolen specimen alert - stolen from the university of california, santa barbara! (Birdbrain59)
21 Aug-17:02:17 Re: the mizunaka collection (Am Mizunaka)
21 Aug-14:45:01 Re: stolen specimen alert - stolen from the university of california, santa barbara! (Rweaver)
21 Aug-14:20:19 Stolen specimen alert - stolen from the university of california, santa barbara! (Jordi Fabre)
21 Aug-09:45:51 Re: posters (Tobi)
21 Aug-07:40:03 Re: posters (Raystraw)
21 Aug-06:45:12 Re: east coast mineral and fossil show 2019 (Vic Rzonca)
21 Aug-06:32:54 Re: east coast mineral and fossil show 2019 (Vic Rzonca)
21 Aug-01:44:10 Re: posters (Tobi)
21 Aug-01:36:22 Re: the mizunaka collection (Tobi)
20 Aug-23:43:16 The mizunaka collection - zoisite (Am Mizunaka)
20 Aug-14:32:05 Re: posters (Raystraw)
20 Aug-12:26:51 Re: collection of firmo espinar (Firmo Espinar)
20 Aug-12:16:31 Re: posters (Tobi)
20 Aug-11:57:17 Re: east coast mineral and fossil show 2019 (Tony L. Potucek)
20 Aug-11:45:36 Re: need help to confirm the composition of some specimens (Dany Mabillard)
20 Aug-10:40:00 Re: east coast mineral and fossil show 2019 (John S. White)
20 Aug-09:52:58 Re: posters (Raystraw)
20 Aug-09:27:14 Re: east coast mineral and fossil show 2019 (Bob Harman)

For lists of newest topics and postings click here


RSS RSS

View unanswered posts

Why and how to register

Index Index
 FAQFAQ RegisterRegister  Log inLog in
 {Forgotten your password?}Forgotten your password?  

Like
57588


The time now is Aug 23, 2019 07:15

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
Help please about swamboite-(Nd) structure
  
  Index -> Minerals and Mineralogy
Like
1


View previous topic :: View next topic  
Author Message

Roger Warin




Joined: 23 Jan 2013
Posts: 902


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jul 27, 2018 05:44    Post subject: Help please about swamboite-(Nd) structure  

Hi,
The exchange of photos and ideas is often a monologue.
I believe that the richness of this forum is in the interventions that make it possible to better understand a subject or to solve an issue.
This is how I recently photographed a swamboite- (Nd) specimen from Swambo, Katanga. Sample of Roger Van Dooren, a former employee of Union Minière du Haut Katanga.
I saw that it was the third compound of Nd-U discovered. What else ?
Its structure is complex and was established by a Czech team (Plasil et al.) in 2017. The structure is based upon uranyl-silicate sheets of uranophane topology alternating with an interlayer of partly occupied Nd3+ sites and H2O molecules. (monoclinic, superspace group P21/m)
I did not find any representation of this structure. Can you help me ?
Thank you.



138-Swamboite#2-01b_R.jpg
 Mineral: Swamboite-(Nd)
 Locality:
Swambo Hill (Swambo Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Congo DR (Zaire)
 Description:
with soddyite
 Viewed:  850 Time(s)

138-Swamboite#2-01b_R.jpg


Back to top
Reply to topic Reply with quote
Like
1
   
Display posts from previous:   
   Index -> Minerals and Mineralogy   All times are GMT - 5 Hours
Page 1 of 1
    

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


All pictures, text, design © Forum FMF 2006-2019


Powered by FMF