Quartz

Quartz is an uncommon resource in Astroneer that can be found on all planets. It appears as tall pink hexagonal crystal clusters, and typically occurs underground at all cave levels.

Source
Quartz can be found on the following planets:

The produces 4 Quartz with a full tank of.

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

Uses
Quartz is used to craft the following items :

Media
Quartz Кварц