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40d:Alluvial layer
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| This article is about an older version of DF. |
Several minerals, ores, and gems are specified to occur at least in part within alluvial layers. Alluvial stone is loose and unconsolidated stone that has been eroded away, smoothed down by water flow, and then redeposited in a non-marine setting. In this version of Dwarf Fortress, alluvial deposits do not appear under any circumstances - in later versions, they appear within sedimentary layers.
Whether or not a particular stone, gem, or ore could hypothetically appear in the alluvial layer is controlled by the [ENVIRONMENT:ALLUVIAL:...] tag in its raw files. Alluvial environments can contain clusters of:
- native gold
- native platinum
- cassiterite
- jade gems (blue, lavender, pink, white, and green)