How to identify the sandstone
Sandstone containing more than 90% quartz is called quartzose sandstone.
When the sandstone contains more than 25% Feldspar, it is called argose or arkosic sandstone.
When there is a significant amount of clay or sil, geologists refer to the rock as argaglis sandstone.
The color of sandstone varies depending on their composition.
Argillacous sandstones are often gray to blue.
Because it is compiled from light colors, sandstone is typically light brown color in color.
The most common sandstones have several shades of red, caused by iron oxide (rust).
In some cases there are a press heroes caused by manganese.
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