Attapulgite

Part of speech: noun

Definitions

1. A naturally occurring clay mineral composed of hydrated magnesium aluminum silicate, commonly used for its absorbent and thickening properties in industrial and pharmaceutical applications
2. A fibrous mineral made of hydrated magnesium aluminum silicate that functions as an absorbent material and rheology modifier in products like cat litter, drilling mud, and antidiarrheal medications
3. A type of clay known for its water absorption and suspending capabilities, formed from magnesium aluminum silicate minerals, frequently utilized in environmental cleanup and as an active ingredient in certain medicinal formulations

Etymology: Attapulgite is named after Attapulgus, a small town in Georgia in the American South, near where the clay was first mined. The mineral was identified and named in the 1930s, when the local clay deposits were being studied for their absorbent properties. The name is therefore a place-name formation: "-ite" is the standard suffix mineralogists use for mineral names, attached to the local place name, a practice that dates back to the nineteenth century and is used for many minerals named after localities. The clay's unusual structure explains why it was worth naming. Its crystals form long fibres or rods rather than the flat plates found in most clays, which gives it a large surface area and an ability to soak up liquids and gases. That property made it useful in products such as kitty litter, pharmaceutical adsorbents and oil-spill cleanup, and it is still commonly called fuller's earth in older trade usage, a separate name for a broader group of similar clays.

Synonyms: palygorskite, clay mineral, sepiolite