Industrially, sandstone is used as a raw material for manufacturing and in construction. Naturally, sandstone functions as an aquifer and as a reservoir for oil and gas. As it frequently originates from granite, an extremely common type of rock, sandstone is one of the most common types of sedimentary rock.Know More
Sandstone is composed of rock or organic material and sand-sized mineral grains that have been deposited from other sources. The percentage of grain, rock or organic material depends on where the sandstone originated and how long the transport process took. During this process, chemical changes and weathering affect the properties and composition of the sandstone. Natural cement that binds the sand grains together and a matrix of silt or clay particles between sand grains may also be present.
Mineral grains in sandstone are usually quartz but can be feldspar or other minerals. Quartz content in sandstone can be 90 percent or more. Sandstone with plentiful quartz is considered more mature because it has been weathered more by wind and water, which scrape away the weaker minerals, such as hornblende and biotite. Sandstone containing high amounts of feldspar is immature if it originates from a source rock with significant quartz content.Learn more about Geology
Sandstone turns into a hard metamorphic rock called quartzite. Quartzite is formed when sandstone goes through metamorphosis under intense heat and pressure. Quartzite is mostly white or gray, and it breaks in even layers to reveal glassy surfaces with visible sand and quartz grains.Full Answer >
Sandstone contains distinct physical and chemical properties that include a hard, compact and dense composition along with texture consisting of fine granules, while chemical properties include a composition primarily of silica, along with trace amounts of other minerals. The properties of sandstone varies among the different varieties. Some sandstone, such as teakwood and rainbow, feature a slightly softer composition and absorb more water, making them more porous than other types of sandstone.Full Answer >
Sandstone forms wherever sand is buried under the right conditions to pack it into a solid rock. This often occurs in offshore river deltas; however, sandstone is also found in desert dunes and on beaches.Full Answer >
Sandstone forms over the course of centuries, as deposits of sand accumulate in rivers, lakes or on the ocean floor, and the sand blends with calcite or quarts and then undergoes compression. After enough time goes by, the pressure pushes all of these elements together to create sandstone. Because not all sand is identical but instead comes in a variety of colors and grain textures, each formation has a unique appearance.Full Answer >