Wolframite

Wolframite is a natural resource in Astroneer. Wolframite is a cluster of cubes, similar to real world bismuth, with a green-yellow gradient.

Source
Wolframite can be found on the following planets:

The gives 2 Wolframite for every 3, up to 4 total for 6.

Uses
Wolframite is used to craft the following items:

Media
Вольфрамит Wolframite Wolframit