Volcanic Rock Formed by Cooled Lava

This page is the CodyCross answer for the clue below from Greece, Group 670, Puzzle 5 (Small Tavernas).

Question is: Volcanic Rock Formed by Cooled Lava

and the answer is: 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.

Volcanic rock formed by cooled lava — CodyCross Answer | CodyCross Solutions