sedimentary
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
Hardness: 6-7 (depending on cementation), Color: Varies widely including red, yellow, brown, tan, and white, Luster: Dull or earthy, Crystal structure: Clastic texture composed of sand-sized mineral grains or rock fragments, Cleavage: None, Specific Gravity: 2.2-2.8
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Physical properties
Hardness: 6-7 (depending on cementation), Color: Varies widely including red, yellow, brown, tan, and white, Luster: Dull or earthy, Crystal structure: Clastic texture composed of sand-sized mineral grains or rock fragments, Cleavage: None, Specific Gravity: 2.2-2.8
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, mainly quartz and feldspar, typically deposited in environments like deserts, rivers, and beaches over millions of years.
Uses & applications
Widely used as a construction material for building facades, paving stones, flagstones, and historically for grinding stones and whetstones.
Geological facts
Many of the world's most famous monuments and ancient architectural wonders, such as Petra in Jordan and parts of the Egyptian pyramids, are carved out of or built from sandstone.
Field identification & locations
Easily identified by its gritty texture, visible sand grains, and often distinct bedding layers. Found globally in sedimentary basins and geological formations worldwide.
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