Coarse-grained sandstone Coarse-grained sandstone antonyms If you know antonyms for Coarse-grained sandstone, then you can share it. Suggest antonym for Coarse-grained sandstone Coarse-grained sandstone synonyms sandstone grit gritstone If you know synonyms for Coarse-grained sandstone, then you can share it. Suggest synonym for Coarse-grained sandstone