Siliceous rock often occurring as flint nodules in chalk

Let's find possible answers to "Siliceous rock often occurring as flint nodules in chalk" crossword clue. First of all, we will look for a few extra hints for this entry: Siliceous rock often occurring as flint nodules in chalk. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.