Identity HelpFriedrich Mine, Germany unknowns
Hello, all- especially our German mineral experts! I found a small (about 0.5 cm) specimen in a collection of unmounted microminerals I am examining. It is labeled "Hauchecornite, Millerite" from "Freidrich, Sapgen, Germany". Much searching on Mindat led me to http://www.mindat.org/loc-11245.html. I still don't know what "Sapgen" means.
The most prominent sulfide-looking minerals I see are prismatic crystals with diamond-shaped striated cross-sections. See images below:
I call them hauchecornite, but the crystals don't look to be tabular, tetragonal pyramids, as described in MinDat. Perhaps these are millerite?
Thanks for any and all help!
Steve
PS: There are also pink, green and yellow unknowns. The pink looks to be erythrite visually. I thought the yellow stuff might be a uranium mineral but there is no measurable radiation above background from the specimen.
Hi Steve, the "Sapgen" should read Siegen.
Cheers
Harjo 
Hello,
Yes, those are arsenopyrites. Some of the arsenopyrites might be Co bearing, hence the erythrite. Co bearing minerals such as cobaltite, alloclasite, Co-baring arsenopyrite are not uncomon from the Siegerland area, usually occuring in quartz veins or in the hydrothermally altered rock next to the vein. This is what you have here.
You can see some photos of Minerals as well a list here: .
Regards,
Sebastian Möller 
Arsenopyrite had crossed my mind, but it's not listed in MinDat as being found at the Friedrich Mine. Is my specimen enough evidence to add it to the list?
Steve 
Ah see no pyrite either
(sorry about that)
Tim Here are three more images (FOV about 2 mm). Any ideas about the green and yellow minerals?
Thanks!
Tim, nice pun! scorodite (or perhaps annabergite) and iron staining? Hello,
The pale rosé in the first of thevnew pics seems to be annabergite, not erythrite. Such pale xls are Ni-dominant (or Mg-bearing) members of the Vivianite group, usually either Erythrite with Hörnesite or Ni-dominant members of the Annabergite-Erythrite series. At least in the Black Forest we have found lots of this stuff lately. The ore mineral underneath may be gersdorffite, which is not a uncommon paragenesis for such annabergite-erythrite xls. The green may be some copper or nickel mineral, but could also be scorodite.
Regards,
Sebastian Möller
