Corroded Fossil

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Corroded FossilStack Size: 20More Physical Ailment or Chaos Ailment modifiers
No Elemental modifiers
Place in a Resonator to influence item crafting.
Drop restricted
Drop level: 1
Found in Fungal Caverns and Petrified Forest biomes in the Azurite Mine.
Vendor Offer
1x Scroll Fragment
Item class: Currency Item
Metadata ID: Metadata/Items/Currency/CurrencyDelveCraftingBleedPoison

Corroded Fossil is a fossil type.

Item acquisition

Corroded Fossil has restrictions on where or how it can drop. Found in Fungal Caverns and Petrified Forest biomes in the Azurite Mine.


Corroded Fossil can be created from the following recipes:

5The Tinkerer's TableThe Tinkerer's Table55x FossilTrying to bring your vision to life is enough to drive you mad.Random fossil x5A
1Fossilised IncubatorFossilised IncubatorStack Size: 10Adds an incubated Fossil item to an equippable item
Item drops after killing {0} monsters
Right click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.
Random fossilA
1The VoidThe Void1Reach into the Void and claim your prize.Random divination card set exchangeA

Can also be sold by Niko the Mad for 10,000 Azurite.

Spawn Weight Multipliers

Using this fossil multiplies the spawn weights of all modifiers with "elemental" tags by 0, modifiers with both "physical" and "ailment" tags by 10, and modifiers with both "chaos" and "ailment" tags by 10.

All mods with "cold"/"fire"/"lightning" tags also have "elemental" tags, thus Corroded Fossil blocks those mods as well.

Version history

Version Changes
  • Item modifier tags have been entirely reworked with a goal in mind of consistency and simplicity. These changes have negligible impacts to the odds of various modifiers appearing on rare items naturally, but may have impacts to the results of certain crafting methods. A list of all modifiers and their associated tags can be found here.
  • As a result of the above changes, several fossil descriptions have changed slightly.
  • (In Manifesto) Corroded Fossils and Prismatic FossilsPrismatic FossilStack Size: 20More Elemental modifiers
    No Physical Ailment or Chaos Ailment modifiers
    Place in a Resonator to influence item crafting.
    now affect mods with both the Physical and Ailment or Chaos and Ailment tags rather than the Bleeding and Poison tags. The Bleeding and Poison tags are no longer used.[1]
  • Fossils can no longer craft any prefix or suffix mods that cannot be obtained elsewhere, with the exception of those granted by Faceted, Bloodstained and Hollow Fossils. Implicit modifiers (such as the one which changes an item's vendor sell price) remain. The following mods have been relocated, while all others can no longer be obtained:
  • Introduced to the game.


  1. Bex_GGG (September 14, 2020). "Path of Exile: Heist Balance Manifesto". Official Path of Exile forums. Retrieved October 14, 2020.