The Unrefined Magnetite Core is a material tied to Paleontologist Petri, an NPC quest giver in Fisch. Like every other quest item in the game, you have to collect it yourself and hand it over in person, because items in Fisch cannot be traded between players. That single rule shapes how you should approach it.
Quick answer: Obtain the Unrefined Magnetite Core through the normal Fisch material routes (mining, fishing, chests, or a quest reward), then bring it to Paleontologist Petri and interact with the NPC to turn it in. The quest step completes only when you are physically carrying the item and speak to Petri.
Where the Unrefined Magnetite Core fits in Fisch
Everything in your Fisch inventory that is not catalogued in the Bestiary counts as an item, and items serve different jobs. Some help with movement, some are consumables, and a large group exists purely to feed NPC quests and crafting steps. An “unrefined” core belongs to the crafting-material family, the same category as the various essences you gather before they get used in an upgrade or handed to a character.
Non-starter items reach your backpack through a fixed set of channels. Knowing these channels is the fastest way to work out where a specific material like the Magnetite Core comes from.
- Bought from vendors.
- Caught while fishing.
- Pulled from Treasure Chests and Sunken Chests.
- Given as rewards for finishing NPC quests.
- Handed out through leveling up, Rod Mastery, the Personal Aquarium, the Daily Shop, or codes.
Mining materials in Fisch, and the tools that unlock them
A “core” strongly implies a mined resource, and Fisch keeps mined materials behind specific tools. If you do not already own the right tool, you cannot break the rock or dripstone that drops the material, so this is the first thing to check. The core mining tools and where they work are laid out below.
| Tool | Cost / Source | What it mines |
|---|---|---|
| Pickaxe | 5,000 C$ | Dripstones at Tidefall, plus entry to the lever cave in Overgrowth Caves |
| Drill | Submarine Depot | Rocks at Roslit Bay and in Mariana’s Veil |
The same mining loop is how the game’s essences are farmed. Requis, Thalass, and Tide Essence all drop at a 5% rate from mining dripstones in Dripstone Collapse, with a much smaller chance from the Personal Aquarium, and they also come from finishing NPC quests. If the Magnetite Core behaves like these materials, expect to grind a mineable node and watch for a percentage-based drop rather than a guaranteed one.
Note: buy and equip the correct tool before traveling. Turning up at a mining node without a Pickaxe or Drill wastes the trip, since the deposit will not respond to a bare interaction.
Turning the core in to Paleontologist Petri
NPC quests in Fisch reward items, and they also consume the items you deliver. The handover itself is simple once the core is in your backpack.
`, ~, or G key and check that the item is present before you make the trip.
Why the turn-in might not trigger
If Petri will not accept the core, the cause is almost always one of a few things. Because items cannot be traded, you must have gathered the core on your own account rather than received it from a friend. You also need to be carrying the exact material the current quest step asks for, and any earlier steps in Petri’s quest chain have to be finished first. Clear those conditions, and the dialogue option to submit the core appears.
No official public farming location or drop rate for the Unrefined Magnetite Core is confirmed right now, so treat the mining and quest-reward routes above as your working plan. Keep the correct tool equipped, gather the core the way Fisch gates its other materials, and hand it straight to Paleontologist Petri to move the quest forward.
