Rosettes of sharp hexagonal tabular autunite crystals, interpenetrated between them and some isolated. The intense yellow color is characteristic of the species. Crystals are disposed on a pegmatite matrix. This is a sample extracted from Vénachat area late 70's and comes from a reduced extension pegmatite field embedded in granite, near Compreignac. Traces of workings from the 19th century can be found, beside an open pit worked for uranium by COGEMA in 1982-1987. A good quality French historical specimen.

Size: 6,5 x 3,8 x 3,2 cm.
Main crystal: 2 x 2 mm.
Found in 1970's.

Precio reducido-Reduced price 50€
Fluorescent under long wave UV