Grobnite is a solid substance mentioned only once in Metroid Prime 2: Echoes. It makes up part of a panel in Sanctuary Fortress that resembles glass.
The scan data indicates that the panel of Grobnite mixed with Denzium was weakened by Space Pirate forces. The Denzium deposits can be destroyed by a Power Bomb, shattering the panel.
- ↑ "Structural analysis complete.
Panel is laced with Grobnite and Denzium. It has been weakened by numerous strikes from Pirate weaponry." —Scan Data (Metroid Prime 2: Echoes)