sedimentary
Sandstone (Micaceous)
Clastic Sedimentary Rock - Micaceous Litharenite (SiO2 principal)
Hardness: 6-7 (individual quartz grains), color: greyish-tan, luster: vitreous to dull with occasional mica glints, grain size: medium (0.06mm to 2mm), clastic texture.
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Physical properties
Hardness: 6-7 (individual quartz grains), color: greyish-tan, luster: vitreous to dull with occasional mica glints, grain size: medium (0.06mm to 2mm), clastic texture.
Formation & geological history
Formed through the accumulation, compaction, and cementation of sand-sized mineral particles or rock fragments. Often deposited in river beds, beaches, or desert environments.
Uses & applications
Used primarily as a construction material (dimension stone), in glass manufacturing, and as a reservoir for groundwater or petroleum in geology.
Geological facts
Sandstone accounts for roughly 20 to 25 percent of all sedimentary rocks on Earth. Its porosity makes it a critical rock for aquifers and oil fields.
Field identification & locations
Identified in the field by its gritty texture (feels like sandpaper) and visible layers or bedding. Frequently found in canyons and sedimentary basins.
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