Core Sample

Core Sample finds a new resource deposit on a tile of your choosing. One purchase gives you 2 core samples to use.

The type of the resource deposit and its quality (low, medium, high) is random, but some terrain types have a specific resource that is most likely to be generated:

The probability that a given resource spawns will also be affected by other existing adjacent resource deposits of that type, with adjacent trace tiles adding 1% to the relative probability and each successively higher level adding a further 1%.

The chance of a spawned resource deposit being higher quality depends on the resource type and terrain.