Sandstone
Rock
About it
Rock of cemented sand grains you can see or feel, gritty like sandpaper, often layered or cross-bedded; the cement sets its colour. Red sandstones form the arches of Utah and the carved city of Petra in Jordan.
- Type
- Rock (sedimentary)
- Group
- Sedimentary (clastic)
- Specific gravity
- 2–2.7
- Lustre
- dull
- Colours
- tan, buff, red, brown, white, grey, yellow
- Transparency
- opaque
Typical values: real specimens vary. For more, see mindat.org.