Corroded Fossil

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Corroded Fossil
  • Corroded Fossil.png
Stack digit 9.pngStack digit 9.pngStack digit 9.png
TypeCrafting material
RarityRarity Level: 5
Sell 60 Silver Coin.png
Dropped by
Entity Quantity Rate
Flak Crab
Sulphurous Skater
1-3 33.33% (Tier 2)
6.67% (Tier 3)
Anthozoan Crab
Belching Coral
1 6.67%

Corroded Fossils are Hardmode crafting materials that drop from various enemies in the Acid Rain event after the Aquatic Scourge has been defeated. They are used to craft several weapons themed around the Acid Rain.

Crafting[edit | edit source]

Used in[edit | edit source]

Result IngredientsCrafting Station
Caustic Tear
Caustic Tear (Non-Consumable)
Caustic TearCaustic Tear Mythril AnvilMythril Anvil /
Orichalcum AnvilOrichalcum Anvil
Corroded FossilCorroded Fossil (10)
Bonebreaker Bone JavelinBone Javelin (150)
Corroded FossilCorroded Fossil (15)
Corroded Caustibow ShellshooterShellshooter
Corroded FossilCorroded Fossil (10)
Miasma Nimbus RodNimbus Rod
Aquamarine StaffAquamarine Staff
Corroded FossilCorroded Fossil (10)
Acidic Rain Barrel Blast BarrelBlast Barrel
Contaminated BileContaminated Bile
Corroded FossilCorroded Fossil (15)
Music Box (Acidic Downpour) Ruinous SoulRuinous Soul Ancient ManipulatorAncient Manipulator
AcidwoodAcidwood (10)
Sulphuric ScaleSulphuric Scale (10)
Corroded FossilCorroded Fossil (10)
Music BoxMusic Box

Notes[edit | edit source]

  • 5-10 Corroded Fossils can additionally be obtained from Abyssal Crates at a 50% drop chance after completing Tier 2 Acid Rain.