a common bedded sedimentary rock much used for building, composed largely of sand grains, mainly quartz, held together by silica, lime, etc.
A sedimentary rock formed by the consolidation and compaction of sand and held together by a natural cement, such as silica.
A medium-grained sedimentary rock consisting of fine to coarse sand-sized grains that have been either compacted or cemented together by a material such as silica, iron oxide, or calcium carbonate. Although sandstone usually consists primarily of quartz, it can also consist of other minerals, and it can vary in color from yellow or red to gray or brown.
- Much of the building material is a brown sandstone obtained from quarries only 3 m.
- Goethite, limonite and haematite are found in New South Wales, at the junction of the Hawkesbury sandstone formation and the Wianamatta shale, near Nattai, and are enhanced in their value by their proximity to coal-beds.
- In the neighbourhood are large deposits of sandstone and lignite.
- An excellent glass sand is procured from crushed sandstone near Berkeley Springs, Morgan county.
- These older beds are overlaid, especially in the western part of the country, by a sandstone series which contains thin seams of coal and many remains of plants.