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PhotosSchoepite - Shinkolobwe Mine, Shinkolobwe, Katanga Copper Crescent, Katanga, Democratic Republic of Congo

1st Jul 2012 14:39 UTCUwe Kolitsch Manager

I would expect schoepite to form acicular to lath-like crystals, not such blocky individuals.

What's the opinion of Katanga / U mineral specialists?

1st Jul 2012 15:32 UTCPaul De Bondt Manager

Hi Uwe,


I can confirm that this is schoepite from Shinkolobwe. No doubt.

The more lath-like crystals exist but are always pseudomorphs after rutherfordine, ianthinite or other.

The MR volume 20 number 4 from 1989 page 285 shows a good example of the mineral as it occur at Shinkolobwe.


I hope this helps.


Take care and best regards.


Paul.

1st Jul 2012 16:13 UTCRoger Van Dooren

Hi,


Schoepite occurs most often in tabular crystals flattened on 001; there is a yellow variety known as epi-ianthinite. The presentation of this variety is the same as the ianthinite but the chemical composition and properties are those of schoepite ( op cit M.Deliens in "Les minéraux secondaires d'uranium du Zaïre" )

See a nice description of schoepite in: http://www.agab.be/mineralogie/Katanga/katanga.html


Roger
 
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