White or gray mineral Crossword Clue
7 letters · New York Times · Sunday, September 10, 1995 · 23-Across
Appeared in 1 New York Times Crossword: Sunday, September 10, 1995.
Exact puzzle match · New York Times · September 10, 1995 · 23-Across · 7 letters
LEUCITE0 of 7 letters revealed
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What does this clue mean?
A mineral of silica-poor igneous, plutonic and volcanic rocks. Chemically, leucite is a potassium feldspar with insufficient silica to satisfy the chemical bonds. Because of the unfilled bonds, leucite weathers rapidly and can only be seen as inclusions in freshly broken rock.
noun
WordNet® (Princeton University)
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