Iron Ore

Unrefined iron. Needs to be refined in a smelter.
Overview

Its main use is as a raw material in the game’s resource system, and it is listed alongside other ore-type materials. The item is not tied to a specific boss, biome, or crafted set in the available source material, but it is clearly grouped as a mining-related resource. Because it is an ore, players should think of it as part of the game’s broader progression of gathering and refining metals.
The available source notes also indicate that Iron ore can be obtained with a chance while fishing. A guaranteed alternative is mentioned as well, though the source text does not identify the exact source item in the excerpt provided. In practical terms, that means the item is not limited to a single gathering method, and fishing can produce it as a secondary reward.
When planning inventory and storage, treat Iron ore like other bulk crafting materials:
- It is best collected and transported as part of a broader metal-hauling run.
- Since it is a resource item, it should be kept for crafting and progression rather than discarded.
- If you are fishing for it, expect it to be an additional drop rather than the primary catch.
The page sources also confirm the item name directly in multiple locales, including English, which matches the in-game term Iron ore.
Official description
Unrefined iron. Needs to be refined in a smelter.