The other day when I did a quick check, was picking up some traces of platinum in spots, but more in this one place. What I understand about New Mexico platinum, the Spanish had no use for it, at least while mining there. As a result, it got discarded on a dump pile. I'm thinking the platinum found in mines was located more in south central part of NM.
I've done quite a lot of maps for a prospector in Vancouver Island, BC... to locate good areas for filing mining claims. The BC area is know for abundance of platinum, some rivers produce not only nuggets, but 50% platinum placer gold. In Vancouver Island, it's not that common, a couple maps did give a platinum signal, with nuggets too.
Now, I need to check if just a trace or enough to mine. Seems like you would have already known about it if there was platinum in abundance. Probably the best thing to do is check out the placer gold recovered, see if it is part platinum.