31471289siliceous sandstonePT2026-03-30 21:06:50UF31471290orthoquartziteNDUF31471291orthoquartzitesNDUF31471292sandstone, silicaNDUF31471293sandstone, siliceousNDUF31471294sandstones, silicaNDUF31471295sandstones, siliceousNDUF31471296silica sandstoneNDUF31471297silica sandstonesNDUF31471298siliceous sandstonesNDBT31457363sandstone by composition: aggregate typePTNT31478237Amherst sandstonePTNT31478239Aquia Creek sandstonePTNT31478245Dunville sandstonePTNT31478253Potsdam sandstonePTNT31478230Stancliffe sandstonePT