A rich cabinet specimen of autunite, covered in deep yellow bundles of sheave-like crystals.
As mentioned in the text at the top of the page, this piece comes from the collection of Jean Chervet (chervetite), which would date this piece to before 1962. Today, you would be much more likely to see a similar piece from Washington, than from France.
The Margnac Mine closed in 1995, though this was found decades before.