Keywords |
  • Geology

Clays (minerals)

Clays are hydrated phyllosilicates frequently occurring in the form of ultramicroscopic or cryptocrystalline crystals. Their structure can be identified by X-ray diffraction; they are characterised by superimposed sheets composed of tetrahedral or octahedral layers. In the space between the sheets, or interfoliar space, there are various cations such as K, Na, Ca.



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