Replace Metallic Plants
This is a simple mod that replaces the plants for Thamium9, Zinc, and Platinum with minable rocks and crystals. I always found it strange that these essential metals were found in plants, and even more odd that these exact same plants were found on almost every planet. It also doesn't make much sense that a single plant could contain enough metallic material to craft an entire device. So I replaced them with rock and crystal models which can be mined with the mining laser.
Simply copy the _ReplaceMetallicPlants_vX.X.pak file into the GAMEDATAPCBANKSMODS folder in your root No Man's Sky directory. Also delete or rename the DISABLEMODS.txt file in the PCBANKS folder.