Lithium

Lithium is a rare resource in Astroneer. It occurs in curly noodle-shaped nodes of pink-and-yellow tubes, and is typically found deep underground.

Source
Lithium can be found on the following planets:

The gives 1 Lithium for every 4, up to 2 total for 8.

Uses
Lithium is used to craft the following items:

Trivia

 * Before 1.0, Lithium and Titanium deposits required the use of a Drill Head attached to a Crane, as the soil around it was too hard for the Terrain Tool to break through. However there was some of it on the sides that you could mine.but still Titanium is found like that.

Media
Lithium Lithium Lithium Литий