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Gauthierite

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JYJ754207

Gauthierite

EDS & XRD confirmed specimen no 19-11-25-sk5

Description Tabs

Description
Locality: 
Shinkolobwe Mine, Shinkolobwe, Kambove, Haut-Katanga, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 0.9 × 0.9 cm
Description

Very good gauthierite associated with orange vandendriesscheite, beige-colourless rutherfordin and yellow metaschoepite. 

There is another yellow-green tabular mineral, that could not be assigned to a valid phase. The highly oriented XRD pattern shows some relation to becquerelite. 

Gauthierite was identified by EDS and XRD, where the latter one shows a superposition of vandendriesscheite and gauthierite. The Raman spectrum using the 532nm laser is overlaid by a strong fluorescence for gauthierite. 

Rich specimen.

First three images in analytical data give the result of gauthierite and vandendriesscheite. Fourth and fith images are the EDS results. Raman and XRD data on request. 

Mineral Data
What's on the rock

Gauthierite

Formula: 
KPb[(UO2)7O5(OH)7]·8H2O
Crystal System: 
Monoclinic
Type Locality: 
Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)