Ranunculite with Triangulite and Eylettersite

Availability

Sold

Size

7 x 5.5 x 5.5 cm - Sm Cabinet 

Formula

Al(UO₂)(PO₃OH)(OH)₃·4H₂O (RRUFF)

Locality

Kobokobo Pegmatite, Sud-Kivu, Democratic Republic of Congo

Tagged

phosphate , pegmatite mineral

An earthy mass full of secondary uranium alterations. If I have this right, and I have never seen this mineral before, the bright yellow coatings are Triangulite, which is the prevalent mineral. The light yellow crystals are the Ranunculite. However, looking at the list of minerals there are a plethora of other minerals found at this deposit including the very rare Eylettersite. This deposit features 14 type locality minerals any of which could be found on this specimen. It is a large specimen, so breaking it up analyzing it would be good thing to do. The long bladed thin crystals are columbite and even these seem to be altered. There are also brown zircon "cyrtolite". A handwritten label can be seen under the prov. tab.

Type Locality