Complex sentence: In some countries, including the UK and US, calcium bentonite is known as fuller's earth, a term also used to refer to attapulgite, in terms of mineralogy, a distinct clay mineral but one exhibiting similar properties.
Split into simpler sentences: In some countries, including the UK and US, calcium bentonite is known as fuller's earth. This term is also used to refer to attapulgite a distinct clay mineral but one exhibiting similar properties.