Lustrous Volcanic Rock Crossword Clue

There is 1 exact and 103 possible answers.

We've checked our database and believe the answer is PERLITE which was last seen in the New York Times crossword.
Check other possible answers below.

We think the answer to this crossword clue is: PERLITE

Updated: October 10, 2023 by Nicoli Westwood

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Best Possible Answers

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Rank		Letters	Answer	Clue
1	99%	7		Exact Match!
2	30%	7		Type of volcanic rock commonly found in volcanic domes
3	30%	11		Volcanic _______ refers to the fragments of rock ejected during a volcanic eruption

About This Clues Answer

We think the answer is "PERLITE" which means:

noun

• An amorphous volcanic glass formed by the hydration of obsidian.
• The lightweight insulating material and aggregate resulting from expanding perlite glass by heat.

An example sentence would be:

• "Gardeners often use perlite as a soil amendment."
• "The insulation properties of perlite make it useful in construction."

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Clue Last Found In...

Source	#Number	Answer
New York Times01 Mar 1978	Across 48
This clue was last seen in the publications above.

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1	Black volcanic rock The Guardian Speedy - 15 Apr 2018	The Guardian Speedy / 15 Apr 2018
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3	Melted volcanic rock New York Times - 11 Sep 1987	New York Times / 11 Sep 1987
4	Of a dark, volcanic rock New York Times - 27 Oct 1990	New York Times / 27 Oct 1990
5	Type of volcanic rock commonly found in volcanic domes
6	Volcanic rock turned up by little creatures The Guardian Quiptic - 09 Apr 2012	The Guardian Quiptic / 09 Apr 2012
7	Volcanic _______ refers to the fragments of rock ejected during a volcanic eruption