U
Ullmannite
Ulrichite
Undefined (analysis uncertain)
Unknown (not analysed so far)
Unnamed
Uralite
Uranocircite
Uranophane
Uvarovite (Garnet Supergroup)
Uvite
Ullmannite
Ulrichite
Undefined (analysis uncertain)
Unknown (not analysed so far)
Unnamed
Uralite
Uranocircite
Uranophane
Uvarovite (Garnet Supergroup)
Uvite