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Unnamed U-minerals

Posted by Luc Vandenberghe  
Luc Vandenberghe May 28, 2012 05:05PM
Hi all,
After research on uranium minerals I found that the following species names were named by the IMA. Below the list of these species with the nomenclature by IMA :

Unnamed (Basic Pb-U Carbonate) from Loe Warren Zawn = UM1995-// - CO-PbU (Invalid);
Unnamed (Ca-REE-U Carbonate Hydrate) from Loe Warren Zawn = UM1995-// - CO-CaHREEEU (Invalid);
Unnamed (Na-Mg-U Borate-Sulphate I) from Schildmauer = UM1976-05 - BO-HMgNaSU (Valid);
Unnamed (Na-Mg-U Borate-Sulphate II) from Schildmauer = UM1976-06 - BO-HMgNaSU (Valid);
Unnamed (Na-Mg-U Borate-Sulphate III) from Schildmauer = UM1976-07 - BO-HMgNaSU (Valid);
Unnamed (Pb-U Sulphate) from Jachymov = probably UM1997-48 - SO-HPbU (Valid);
Unnamed (Pb-U Hydrous Oxide) from Jachymov & Zálesí = UM2006-//-O:HPbU appears to be same as UM1997-35-O:HPbU and similar to masuyite (Invalid);
Unnamed (Pb-U-Al Phosphate) from Les Montmins = UM2000-// - PO-AlPbU (Invalid).

More informations on the IMA website :

Thanks for making changes.

Greetings from Belgium

Luc Vandenberghe June 06, 2012 02:39PM
It's always nice to see that a well-founded remark is monitored to improve this database ...

A big thank you for your attention !!!
Knut Edvard Larsen June 08, 2012 05:37PM
Hi Luc
Thanks for bring our attention to these.

The mineralpages of the 2 UM from Loe Warren Zawn and the 3 UM from Schildmauer is now updated.

Others will follow, in time
Matt Wall June 08, 2012 06:32PM
The "Unnamed (Pb-U Sulphate) from Jachymov = probably UM1997-48 - SO-HPbU (Valid)" is probably something with a similar composition to Renardite or Dewindtite. Just like Torbernite is similar to Sengierite, as they both carry the Copper Uranyl .... and they both have a similar tabular composition (habit), the only difference is that Torbernite has Phosphate as the "binder" (as I like to call it - the element which holds the mineral together) and Sengierite has Vanadium as the "binder", but they both are green and tabular in habit/form.
So something with an acicular habit maybe and a yellow colour for the "Unnamed (Pb-U Sulphate) from Jachymov". The only problem is (from what I know) Dewindtite isn't commonly found at Jachymov.
Hope this helps!
Matt. =)
Luc Vandenberghe June 09, 2012 08:36AM
You're welcome Knut.

But the "UM....." names are the only ones recognized by the IMA and should be on the top of web page.
It is not right to keep "Unnamed ...." on the top of the webpage and UM ... as synonymous.
The opposite is correct.

Would you please note :

UM 1960-04-O : HU from El Sherana Mine in the South Alligator River Area, Northern Territory, Australia = Heisenbergite;
UM 1997-36-O : HU from Jachymov = Heisenbergite.

Indications from :
Heisenbergite, a new uranium mineral from the uranium deposit of Menzenschwand in the Southern Black Forest, Germany
Kurt Walenta and Thomas Theye;
N. Jb. Miner. Abh. 189/2,117-123

For UM1997-48 - SO-HPbU, if you read the text in Journal of the Czech Geological Society, 42/4 (1997) P. 103, we speaking about an unnamed SULFATE with major elements : U, Pb & S... This species is an hydrated uranyl lead sulphate with distinct X-ray powder diffraction pattern

So It's impossible to have a similarity with renardite or dewindtite (wich are phosphates) !!!

Greetings from Belgium.


Edited 2 time(s). Last edit at 06/09/2012 09:35AM by Luc Vandenberghe.
Knut Edvard Larsen June 09, 2012 10:39AM
Yes, Luc ,
when i first entered the changes the UM's come out as synonym to the Unnamed.. , which was, as you pointed out, of course wrong. It' s corrected now.
All changes made.
Luc Vandenberghe June 09, 2012 11:24AM
Thank you Knut !!!

But It seems that the follwing UM's are missing from the database

UM1960-04-O:HU from El Sherana Mine in the South Alligator River Area, Northern Territory, Australia -
THREADGOLD, I. M. (1960): The Mineral Composition of Some Uranium Ores from the South Alligator River Area, Northern Territory.
- CSIRO Mineragraphic Investigations Technical Paper No. 2, CSIRO, Melbourne.

UM1997-36-O: HU from Jachymov - ONDRUS, P., VESELOVSKY, F., SKALA, R., Cisafova, I., HLOUSEK, J.,FRYDA, J., VAVRIN, I., CEJKA, J. & GABASOVA, A. (1997): New naturally occurring phases of secondary origin from Jachimov (Joachimsthal). - J. Czech Geol. Soc. 42: 77-107.

The two "species" are identical to Heisenbergite (see above)

Have a nice weekend.
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