Crossword Genius

Igneous rock (7)

Ross

I think it could be either:

Which length description are you looking for?:

6

7

basalt

'igneous rock' is the definition.
(basalt is a kind of igneous rock)

This is the entire clue.

(Other definitions for basalt that I've seen before include "Commonest type of solidified lava; dense, dark grey and fine-grained" , "rock from 2 [VOLCANO]" , "Rock containing olivine" , "Dark rock of volcanic origin" , "Dark fine-grained volcanic rock" .)

I've seen this clue in the Evening Standard and The Independent.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.