DARK ROCK Crossword Clue

The most common solution for the crossword clue "DARK ROCK" are ONYX with 4 letters.
We know 2 solutions for: DARK ROCK
Crossword Puzzle Infos
Dark rock is a term used to describe two types of rocks, BASALT and ONYX. BASALT is a dark-colored, fine-grained igneous rock composed mainly of plagioclase and pyroxene minerals. ONYX is a banded variety of the silicate mineral chalcedony, which is a cryptocrystalline form of quartz. Both BASALT and ONYX are found in various parts of the world and have been used for centuries in construction and decorative purposes.
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