A nice example of this rare nickel arsenic sulfide, with a cluster of metallic octahedral crystals nestled in the middle of a caclite matrix, with patched of green annabergite (another nickel, arsenic bearing mineral.)
While it is found at a number of localities, the bulk of well crystallized samples (when you see them) come from the Bou Azzer region of Morocco.
This year I saw 2 Moroccan dealers with examples of the species, I'm guessing these were fromt he find made last year, and even then there would not have been more than a few flats in total. Most were in rather poor condition or way too large, but I did select one decent looking piece. It's not perfect, but fairly sizable compared to what you would normally find, and the color contrast makes for somewhat better aesthetics.