sedimentary
Sandstone
Clastic Sedimentary Rock
Hardness: 6-7 (depending on cement), Color: Gray, tan, brown, reddish; Luster: Dull to earthy; Crystal structure: Clastic (composed of quartz and other mineral grains cemented together); Cleavage: None
- Hardness
- 6-7 (depending on cement), Color: Gray, tan, brown, reddish
- Color
- Gray, tan, brown, reddish
- Luster
- Dull to earthy
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Physical properties
Hardness: 6-7 (depending on cement), Color: Gray, tan, brown, reddish; Luster: Dull to earthy; Crystal structure: Clastic (composed of quartz and other mineral grains cemented together); Cleavage: None
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, usually composed mostly of quartz, in environments like beaches, deserts, and rivers.
Uses & applications
Commonly used in construction as building stone, paving material, and in the manufacture of glass.
Geological facts
Sandstone often forms spectacular geological formations like arches and canyons due to differential erosion.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible mineral grains.
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