FMF - Friends of Minerals Forum, discussion and message board

[cfrench58]

While doing some close-in macro photography on this old Tsumeb Calcite with Duftite specimen, I noticed a bow-tie mineral which I am having a hard time identifying. It fluoresces a strong deep orange @ 365 nm (sorry no photo). I was thinking perhaps aragonite but I thought I might get some knowledgeable feedback from the Tsumeb experts in the forum. Thanks in advance!

[Roger Warin]

I propose cerussite. You can't see the crystals well.
I doubt duftite.

[Jordi Fabre]

Almost certainly Mimetite, its fluorescence, as well as its appearance, indicates it.

[cfrench58]

Thanks Jordi! I would not have thought of that, makes perfect sense.
-C