Arcilla 
Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g.
Características
- kaolinite, Al2Si2O5(OH)4).
- Most pure clay minerals are white or light-coloured, but natural clays show a variety of colours from impurities, such as a reddish or brownish colour from small amounts of iron oxide.
- Clays develop plasticity when wet but can be hardened through firing.
Fuentes: Wikipedia — Clay
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Información documental: no constituye una recomendación de uso ni una alegación fitosanitaria o veterinaria. Verifica la normativa de tu país antes de cualquier uso.