Moonstone

Moonstone Ore is a mid-tier ore used to manufacture Moonstone Bars, as well as other materials such as Phase Matter.

Confirmed locations for Moonstone Ore are Metallic and Crystalline Moons.

Trivia

 * Textures for Moonstone Ore actually already exist in Starbound's default assets. Frackin' Universe simply enables spawning of Moonstone in certain biomes, and adds the moonstone bar item as a refined product. This may suggest the later usage of these textures for a vanilla ore in Starbound itself.