Gold Ore
From WikiRaider
Gold Ore is one of the rarer Resources that can be found in Shadow of the Tomb Raider. It does not serve any Crafting purpose but is only good for selling to one of the Merchants in Paititi for Gold Coins. Gold Coins in turn can be used to buy other items or resources.
Sell Gold Ore to merchants.
Shadow of the Tomb Raider, On-screen info
Rare metal harvested from ore veins and found in treasure chests. Sell to merchants.
Shadow of the Tomb Raider, Survival Guide
Gold Ore can be found in Crypts and Optional Tombs, but sometimes it can be found in populated areas as well where it is often used to decorate walls or create jewellery. There are also many Gold Ore Veins. Lara can carry up to 75 pieces of Gold Ore in her inventory.