Dark Lunar Rock Formed From Cooled Lava
This page is the CodyCross answer for the clue below from Home Sweet Home, Group 635, Puzzle 5 (Alarm System).
Question
Dark Lunar Rock Formed From Cooled Lava
Answer
BASALT
Word Meaning:
BASALT — (mineralogy) A hard mafic igneous rock of varied mineral content; volcanic in origin, which makes up much of the Earth's oceanic crust.
Definitions from Wiktionary.