Softest geological substance in Mohs scale of hardness

Let's find possible answers to "Softest geological substance in Mohs scale of hardness" crossword clue. First of all, we will look for a few extra hints for this entry: Softest geological substance in Mohs scale of hardness. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.