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Dumontite & Althupite

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JYJ947213

Dumontite & Althupite

Description Tabs

Description
Locality: 
Kobokobo Pegmatite, Mwenga, South Kivu, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.3 × 0.6 cm
Description

Yellow dumontite associated with althupite (masses) and studtite. 

SEM-EDS & SXRD no 1477. 

 

Mineral Data
What's on the rock

Dumontite

Formula: 
Pb2(UO2)3(PO4)2(OH)4·3H2O
Strunz: 
8.EC.15
Crystal System: 
Monoclinic
Hardness: 
0.0
Type Locality: 
Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

Althupite

Formula: 
AlTh(UO2)7(PO4)4(OH)5O2·15H2O
Strunz: 
8.EC.25
Crystal System: 
Triclinic
Hardness: 
3.5 - 4.0
Colour: 
Yellow
Streak: 
Yellow
Type Locality: 
Kobokobo pegmatite, Mwenga, Sud-Kivu, Democratic Republic of Congo (Zaïre)