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Françoisite-(Nd) With Metatorbernite

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PDM871179

Françoisite-(Nd) With Metatorbernite

Rare Mineral

Description Tabs

Description
Locality: 
Kamoto East Open Cut, Kamoto, Kolwezi, Lualaba, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2 × 1.8 cm
Description

Very good yellow françoisite-(Nd) from the type locality, with the typical paragenesis of green metatorbernite. Françoisite-(Nd) was very rare in this locality and this is a rich definitive specimen.

Collected before 1985, it was in the collection of Joseph Lhoest a Belgian doctor who worked in D.R. Congo for many years and it is well known for his articles about Congo in the Mineralogical Record and Lapis.

Ex Joseph Lhoest.

Mineral Data
What's on the rock

Françoisite-(Nd)

Formula: 
(Nd,Ce,Sm)(UO2)3(PO4)2O(OH)·6H2O
Strunz: 
8.EC.05
Crystal System: 
Monoclinic
Hardness: 
3.0
Colour: 
Yellow
Type Locality: 
Kamoto East Open cut, Kamoto, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

Metatorbernite

Formula: 
Cu(UO2)2(PO4)2·8H2O
Strunz: 
8.EB.10
Hardness: 
2.5
Type Locality: 
Schneeberg District, Erzgebirge, Saxony, Germany

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