Thanks for the reply! It's a Desert Pangolin, so I guess I can't sell it yet. But no worries, I've got plenty of side quests to do still until that feature is added.
There's actually one other thing. I found 10 mining teams in Sortitudo Mines after the cave in (based on what the old man outside said) and I destroyed all the rocks blocking the pathways. The old man says there must be more mining teams, but I can't find any others. Is this a glitch or should I keep looking?
Also just wanted to say how much I love this game -- the characters, the music, the action, the lore -- it's just a really great, full game. I couldn't help but donate after downloading it and playing it for hours.