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Crossword clue: a green mineral consisting of hydrated silicate of potassium or iron or magnesium or aluminum; found in greensand

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Possible answers

glauconite 10 letters wn-def

a green mineral consisting of hydrated silicate of potassium or iron or magnesium or aluminum; found in greensand

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Related clues

The green mineral characteristic of the greensand of the chalk and other formations. It is a hydrous silicate of iron and potash. See Greensand.