Obsidian

This article has not been revised for the current version (U51-600112). It was last updated for LU-356355. It may contain inaccuracies.

This article has not been revised for the current version (U51-600112). It was last updated for LU-356355. It may contain inaccuracies.

Obsidian
Obsidian is a brittle composite of volcanic Glass.
Type	Raw Mineral
Melting point	2726.85 °C → Magma
Hardness	200 (Nearly Impenetrable)
Specific Heat Capacity	0.200 (DTU/g)/°C
Thermal Conductivity	2.000 (DTU/(m*s))/°C
Light Absorption	100 %
Radiation Absorption	75 %
Mass per Tile	1840 kg
Properties	Plumbable, Crushable, Generic Buildable, Precious Rock, Solid, Raw Mineral
Overheat Temperature	+15 °C

Obsidian is a Mineral found in the Barren Biome and Volcanic Biome, and infrequently in the Frozen and Caustic biomes. Maps with any of the Boulders World Traits have Obsidian boulders scattered randomly outside the starting area. It is also found in small amounts blocking Geysers. A Duplicant must learn the Superduperhard Digging skill to dig Obsidian, making it a significant impediment in the early game.

Obsidian can also be obtained by deconstructing mosaic Tiles found in Ruins, many of which are made of Obsidian. This does not require any Skills, and is thus a very easy way to obtain moderate amounts of Obsidian.

Usage

Obsidian abundance can vary significantly depending on world generation. It is most common on worlds with a Boulders World Trait and especially on The Badlands Asteroid. Despite this, it has limited applications.

• It does not provide a decor bonus and is therefore inferior to sandstone and granite in regards to decor affecting buildings.
• Most of its value as a construction material can be derived from its low thermal volume, high thermal conductivity, and Thermally Reactive trait, which means it will rapidly heat or cool - encouraging the conduction of heat between areas and substances in contact.
  • It also has a higher melting point than most other natural rocks and metals, making it possible to even build ladders and tiles into magma and contain volcanoes with it, or pipes that are near impossible to melt.
• Marble Block requires 400 kg Granite or Obsidian, and the Monument Base requires 2500 kg of Obsidian besides Steel.
• Rock Crusher can crush 100 kg Obsidian into 100 kg of Sand.
• Stone Hatches can eat Obsidian and excrete Coal.
• Shove Voles cannot burrow through tiles made out of Obsidian.
• It possesses the highest Radiation Absorption rate of Raw Minerals, tied with Igneous Rock

Production

It can be harvested on rocket missions to renewable Space POIs:

• In Metallic Asteroid Fields at a rate of 378 – 1134 kg per cycle.

Trivia

• Probably the only material that had its hardness changed. In early versions of the game it had a hardness of about 50~80 instead of the 200 it has now.

See also

• Resources