I know, this has been explained multiple times and read them all. I use both modes on the prospecting pick and watched several videos. I just hit the 30 cave mark on exploration, 3 had locust and Im not ready to fight them. I think Im doing something wrong. I can not find iron. There not in any of the caves I looked through, I have 70 hours in game and am coming up to my second winter. I have only found miniscule amounts prospecting. I even dug down shafts in that area to mantle, thought I would hit caves with all the shafts I dug, but no. The area im in is mostly granite with claystone and periodite rock. Ive found tons of quartz, silver, bismuth, some tin, olivine, im copper rich. I even just found my first teleporter. Theres no chalk stone in my area or limestone, I would like to find salt too.
Thanks for any feedback.