Siliceous rock Geol
Crossword Clue

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AnswerCrossword Clue
SIALSiliceous rock: Geol.
SIALSiliceous rock.
OOLITESpherulitic rock: Geol.
ganisterhighly refractory, siliceous rock used to line furnaces
ironstoneany iron-bearing mineral or rock with siliceous impurities
diatomitea siliceous sedimentary rock formed from the accumulations of diatoms or other nanoplankton
diatomitesDIATOMITE, a siliceous sedimentary rock formed from the accumulations of diatoms or other nanoplankton
novaculiteA hard, dense, fine-grained siliceous rock resembling chert, with a high content of microcrystalline quartz
hornfelsdark, fine-grained metamorphic rock, the result of recrystallization of siliceous or argillaceous sediments by contact metamorphism