Suggestion for Unidentified fossils
I have gotten two unidentified fossils just by drops over the last 10 days and I was out of town for 4 of those days. Definitely RNG and I was totally surprised each time I got one. Then it was a grind to try to get the geodes for the recipes I wanted.
Another issue is you also need the Nomad Orichalcum Recipe in addition to the Recipe for the particular weapon desired and you need to know which fossil matches up to that recipe in order to get that as well. No way to tell other than going to some third party place like the wiki or Dulfy to find out. In game it is impossible. At least with the recipe there should be a hint when looking at it to figure out which insect you need as well as letting you know you need to have that inscription to make it.