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Mordant Prime

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Map Basic Data Planetary Image
Small cross.pngMordant Prime
Name: Mordant Prime Unknown.jpg
Segmentum: Segmentum Tempestus[3]
Sector: Unknown
System: Mordant
Population: Unknown
Affiliation: Imperium
Class: Mining World
Tithe Grade: Unknown

Mordant Prime is an Imperium Mining World and the homeworld of the Mordant Acid Dogs Imperial Guard Regiments.[1]

It is known for the mining of bioluminescent bacteria from which a highly corrosive acid can be extracted.[1]

Mordant is a nocturnal world whose surface is a barren desert completely unfit for human life. The only humans living on the planet are the miners of the luminescent veins of bacteria that produce the planet's main export. These veins live on the phosphoric content of the rock, and secrete a corrosive acid that eats the rock until it is porous. This has created a vast network of caverns and interconnected tunnels. It is in these tunnels that the clans of miners dedicate themselves to the extraction of the bacterium that they farm in enormous underground vaults to obtain the most corrosive acids known to the Imperium. These extracts are much sought after by Forge Worlds across the sector where they are used industrially.[1]

The acid miners hold an enviable position in Mordant's underground society. With an old and established organization of clans, the miners contract local manual labor paying only enough to allow minimum survival in the shacks of the shanty caverns. Organised crime is rife in these caverns as citizens prey on each other for what little resources they have. In these caverns the violent gangs are the only recognized authority.[1]

Troops recruited from Mordant are sent to war zones in which the soldiers' natural affinity with their homeworld's dark and narrow spaces are put to best use.[1]


  • Arcanadonts are infamous giant reptiles that are top of the evolutionary ladder on Mordant. They are sold across Segmentum Obscurus as vicious pets and status symbols, but at a great cost in lives and raw meat.[2a]
  • Pit Rats[2b]

See also