Dufrénite

Dufrénite from Tsumeb is listed as "believed valid" on Mindat (https://www.mindat.org/locentry-100304.html; accessed April 2023). The entry implies that dufrénite was found in association with azurite but no further information is provided and there is no mention of dufrenite from Tsumeb in the peer-reviewed literature.

The occurrence of dufrenite at Tsumeb is considered doubtful pending analytical verification of the species on a specimen of unequivocal Tsumeb origin.

azurite (?)