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Crystalline Sulfur (Below Zero)

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Crystalline Sulfur is a raw material in Subnautica: Below Zero used as an oxidant and reducing agent. It replaces Cave Sulfur from the original game and is essential for advanced fabrication recipes.

Last refreshed May 18, 2026

Crystalline Sulfur (Below Zero)

Crystalline Sulfur

Crystalline Sulfur is a raw material that functions as an oxidant and reducing agent. It can be found in Sulfur Plants after the residing Crashfish has left. It can also be found in the thermal pools and on cave walls on Delta Island. Crystalline Sulfur can be acquired from Sea Monkeys which offer the player resources.

Infobox Data

PropertyValue
CategoryRaw Materials
DescriptionS. Oxidant and reducing agent.
Size1
Debug IDsulphur

Biomes

Acquired From

  • Seabed
  • Sea Monkey
  • Sulfur Plant

Uses in Crafting

Crystalline Sulfur is used in the Fabricator for various items:

  • x1
  • x1
  • x1
  • x1
  • x2
  • x1
  • x1
  • x1
  • x2
  • x3
  • x5
  • x1
  • x1
  • x1
  • x1
  • x1
  • x2
  • x2

Databank Entry

Crystalline Sulfur

Sulfur is a highly reactive, non-metallic element, usually found in abundance underground. Common applications include production of acidic compounds, and combustibles.

Assessment: Essential for advanced fabrication

Source: Scan

Trivia

  • Crystalline Sulfur takes the place of Cave Sulfur in crafting recipes in Subnautica: Below Zero, being used in all recipes that required Cave Sulfur in Subnautica.
  • Crystalline Sulfur taken from Sulfur Plants still uses the Cave Sulfur model if dropped in the world, but functions identically for all crafting purposes.

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