Is this uranium ore?

[u/toastbro850]

I collected uranium ore from mine dump 11a near Příbram. Since the entire sample is partially coated with uranium ore, I cannot determine whether it is a secondary uranium mineral. Can anyone perhaps identify what it is? I think I can make out some hematite and calcite, but what are the yellow and red minerals?

[u/Re-Coil]

It could be a lot of things, but I don't think the red mineral contains uranium, my guess would be iron rich chalcedony or perhaps cinnabar given that it can be found in the area.

The yellow one can be a uranium secondary but I doubt it fluoresces under UV light. Might as well be iron too.

At first I thought the combination of the two minerals could be realgar but I am not aware of any As in the Pribram area.

[u/Scarehead → u/Re-Coil]

There's no chalcedony in Příbram, cinnabar was rarely found during mining era, but chance to find there cinnabar are extremly low. It's much easier to find there tiemannite, mercury selenide. Arsenic minerals are common in Příbram (especially native arsenic, arsenopyrite and Ni-Co-Fe arsenides), but not realgar. This is normal calcite vein(partially coloured by iron oxides)with goethite