From Wikipedia, the free encyclopedia
Jump to: navigation, search
Picture of the day
Diatomaceous earth

Diatomaceous earth – a naturally occurring, soft, siliceous sedimentary rock made up of the cell walls/shells of single cell diatoms – as viewed under bright field illumination on a light microscope. The primary uses of diatomaceous earth are for cleaning (scouring), filtration, heat-resistive insulation and as an inert absorbent substrate.

Photo: Richard Wheeler
ArchiveMore featured pictures...

See also[edit]