Lunar Base Block
From Starbounder - Starbound Wiki
Lunar Base Block is a construction block found in the Erchius Mining Facility, a shielded environment. It can also be found in Hylotl Underwater Cities and obtained if the player disables the city's shield.
|Ssstrong metal blockss.
|Interested. This durable alloy is not familiar.
|Some sorta tough lookin' metal.