In Wuthering Waves, crafting certain weapons at the Crafting Station requires Indigoite, a mineral found in abundance in Solaris III. If you're wondering where to find Indigoite in the Overworld, we've got you covered.
6 BIGGEST Indigoite Spot ROUTE – Wuthering Waves Farm Guide
As the name suggests, Indigoite is a "deep purple" color that is quite distinguishable from other minerals in Wuthering Waves. It can be found as an ore on cliff edges and in caves, scattered throughout the map.
Here's a map of all the Indigo spawn locations in the Overworld (thanks, Wuthering.gg) to help you with your grinding:
To make it easier, here are some markers on the map indicating cliffs and caves where you can collect multiple indigo ores: