Sandstone is a sedimentary rock

Sandstone is a sedimentary rock

Sandstone

Sandstone is a sedimentary rock mostly composed of quartz sand, but may contain significant amounts of feldspar, and sometimes silt and clay. Sandstones that contain more than 90% quartz are called quartzose sandstones. When the sandstone contains more than 25% feldspar, it is called Archaos or Arcosic Sandstone. When there is a significant amount of clay or silt, geologists refer to the rock as the Argyllasus sandstone. The color of the sandstone varies, depending on its composition. Argillaceous sandstones are often blue to brown in color. Because it is made up of light-colored minerals, the sandstone is usually light tan in color. Other elements, however, form the color in the sandstone. The most common sandstones have different shades of red, which is due to iron oxide (rust). In some examples, manganese has a violet color.

Description

Sandstone is a sedimentary rock mostly composed of quartz sand, but may contain significant amounts of feldspar, and sometimes silt and clay. Sandstones that contain more than 90% quartz are called quartzose sandstones. When the sandstone contains more than 25% feldspar, it is called Archaos or Arcosic Sandstone. When there is a significant amount of clay or silt, geologists refer to the rock as the Argyllasus sandstone. The color of the sandstone varies, depending on its composition. Argillaceous sandstones are often blue to brown in color. Because it is made up of light-colored minerals, the sandstone is usually light tan in color. Other elements, however, form the color in the sandstone. The most common sandstones have different shades of red, which is due to iron oxide (rust). In some examples, manganese has a violet color.

Relation to mining

Loosely consolidated material can be mined using a high-pressure hydraulic monitor. Sand washed from the working face is collected in a sump, from which it is usually pumped into a demounting / surge pile, where the material is allowed to be released from the drain. Once dry, the sand reports to a plant.

Well-consolidated deposits can be mined using the traditional drill and blast methods. Once blasted, the sandstones are “mocked” using a front-end loader, placed in haul trucks, and transported to a primary crusher. After crushing, the material may report to the secondary or tertiary crushing plant. The shaped material is then transported to a processing plant, usually by a conveyance system.

Use

Sandstone has two major applications, as crushed stone and as dimension stone. Dimension stone is any rock material that is cut into specific shapes, usually in the form of blocks and slabs. Crushed stone is used in roadways and road structures such as bridges, and in buildings, both commercial and residential.

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