Look for golems. Golem spawn points are located near abandoned mountain cabins and/or silver veins. If you find a golem and don't find a cabin, there is a silver vein nearby. If the terrain is especially craggy above the obsidian line you can frequently find a part of a silver vein sticking out of a sharp peak.
https://steamcommunity.com/sharedfiles/filedetails/?id=2931149861
Then all you have to do is figure out how to deal with the golem so you can mine in relative peace. Since you are in poor armor you'll have to mine slowly and pause to listen for wolves howling.... but it is possible.