sandstone

noun

1. a common sedimentary rock consisting of sand, usually quartz, cemented together by various substances, as silica, calcium carbonate, iron oxide, or clay.

noun

1. any of a group of common sedimentary rocks consisting of sand grains consolidated with such materials as quartz, haematite, and clay minerals: used widely in building

n.1660s, from sand (n.) + stone (n.). So called from its composition.

1. 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.

A sedimentary rock formed of sand-sized grains that have been either compacted or cemented together. Although sandstone usually consists primarily of quartz, it can also consist of other minerals.