Oxygen Not Included Wiki
This article has not been revised for the current version (U51-600112). It was last updated for U46-552078. It may contain inaccuracies.
This article has not been revised for the current version (U51-600112). It was last updated for U46-552078. It may contain inaccuracies.


Fossil is a Mineral that can be found at the bottom of the map in the Oil Biome in moderate quantities and in small amounts in the Tide Pool Biome. It can be used as a general construction material.

Usage[]

Although general buildings can be made out of Fossil, its main purpose is to be used in the Rock Crusher to convert into Lime for Steel production as an alternative to Egg Shells. Unlike most other items used in the Rock Crusher, Fossils do not break down into Sand; instead, they produce Lime and Sedimentary Rock.

100 kg Fossil = 5 kg Lime + 95 kg Sedimentary Rock.

Production[]

  • Fossil is available in the Oil Biome and, in lesser quantities, the Tide Pool Biome.
  • The Ancient Specimen story trait produces Fossil from Diamond in a 1:100 ratio (1 kg Diamond = 100 kg Fossil), once the story trait is completed.
    • The Fossil Fragments which generate near the points of interest for the Ancient Specimen story trait can be excavated, producing 1500 - 2000 kg of Fossil each (depending on size).