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Sand is a rock material that has been eroded into tiny grains. Sand is composed of quartz and other minerals. Sand becomes the way it does by staring as a rock and getting eroded and eroded until it becomes the tiny grain it is.

Sandstone is basically sand cemented into a rock formation. Sandstone is made up of two materials: matrix and cement. Matrix is fine-grained. Sandstone with a lot of matrix is poorly sorted. If matrix amounts to more than 10% it will start to get poorly sorted.

When sand is pushed deeply down, it's introduced to hotter temperatures.

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How might a sandstone change into another sandstone?

Sand that is overlayed by additional sediments will experience compaction. Small gaps between sand particles will fill in with minerals which cement the particles together. The process takes a long, long time.


The grains of sand in sandstone are up to HOW MANY mm in diameter?

Sand grains are particles that range from 1/16 mm to 2 mm in diameter. Cemented grains of this size compose sandstone.


Is sandstone like dirt?

Sandstone is a sedimentary rock composed of sand-sized minerals and rock grains. Most sandstone is composed of quartz and feldspar. As far as touching it goes, yes, it is like dirt. The texture feels like sandpaper, and kind of dusty.


Is sand impermeable?

Depends on the sandstone and the cementation holding the sand particles together. Generally speaking sandstone has a lot of interconnecting spaces between the sand particles which provides both porosity (ability to hold other material frequently water in geological areas) and the connecting spaces which allows the fluid to move, making it permeable. If sandstone is coated with or has impermeable material pushed into the pore space, then it may become impermeable. The key here is the amount of force used to push the material into the spaces. At some point the force may become sufficiently high to break the cementation of the sandstone apart.


How does sandstone react to vinegar?

Sandstone doesn't react to hydrochloric acid unless the cementing mineral is calcite. Sedimentary rocks that do react with acid include limestones such as chalk. Dolostone also reacts, but only in powder form.