[sand-stohn] 
| a common sedimentary rock consisting of sand, usually quartz, cemented together by various substances, as silica, calcium carbonate, iron oxide, or clay. |
| sand·stone (sānd'stōn') n. A sedimentary rock formed by the consolidation and compaction of sand and held together by a natural cement, such as silica. |
A sedimentary rock formed of sand-sized grains that have been either compacted or cemented together. Altough sandstone usually consists primarily of quartz, it can also consist of other minerals.
| sandstone (sānd'stōn') Pronunciation Key
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. |
