sedimentary
Sandstone
Clastic Sedimentary Rock
Hardness varies from 6 to 7 on the Mohs scale depending on cementation; colors include tan, brown, yellow, red, grey, and pink; dull to earthy luster; composed mostly of mineral quartz and feldspar grains; specific gravity ranges from 2.2 to 2.8.
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Physical properties
Hardness varies from 6 to 7 on the Mohs scale depending on cementation; colors include tan, brown, yellow, red, grey, and pink; dull to earthy luster; composed mostly of mineral quartz and feldspar grains; specific gravity ranges from 2.2 to 2.8.
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, usually composed of quartz and feldspar, often in environments such as deserts, rivers, and beaches over millions of years.
Uses & applications
Widely used in construction as building stone, paving material, and in the manufacturing of glass and abrasives.
Geological facts
Sandstone is one of the most common types of sedimentary rocks on Earth and is famous for forming dramatic geological features and monuments, such as those found in Zion and Grand Canyon national parks.
Field identification & locations
Easily identified by its visible sand grains and gritty texture. Found worldwide in sedimentary basins, cliffs, and desert regions. Common field test includes checking for a gritty feel and visible granular structure.
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