Meh why not... These are as "recent" as in within 6 to 12 months...
Around Wolverine. I assume its everywhere from the E Falx LA all the way to the Daikiba LA W. Far south too, until you hit Zinc/Lyst. I always loved the area between Daiki and Thorifoid LAs in particular, peaceful with just a couple of Hiruyys around. Was even more fun when Terrudite was 300%+
Also around and mostly S of the outpost thats located South of Nymphtown. All the way down to the Rig.
N/E of Scylla too, in the Narc/Igni area and the Cumbriz mountains. Tridenite there too but thats a whole different story. If you hit Gazz youre too north, altho thats not a bad place to mine either if youre looking for Bzzzzzzz-sounding ores or something to make gangsta-rap teeth with (not those old school golden teeth).
Oh and Fefftrox Mountain. N of the outpost thats located somewhere far SW from Argus. You might want to skip the TPing going to that outpost and run while dropping bombs, you might hit a claim of something green and valuable on the way
Unfortunately since some ores were capped, such finds are no longer possible. Just check tracker if you don't believe me, for any xeremite, ruga, tride, langotz, or some other globals. There is not a single, although ppl are using much more powerful finders nowadays.
Oh and found it only once myself, and never after. And on cnd never.