Regional Folklore

[Sigmakan]

Its permanent. Each book seems to unlock two nodes.

You use the book once, and now you have access to those respective nodes. Those nodes behave like unspoiled nodes. They are only open for ONE hour during the 24 hour cycle.

Here's an example of a map I purchased:

I bought Tome of Geological - Abalathia. This unlocked two nodes:
-Sea of Clouds 5am (Sun Mica)
-Azys Lla 7am (Red Alumen)

Prior to purchasing this map, this mining location never showed up for me.