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2. Diatomaceous earth - Wikipedia

   en.wikipedia.org/wiki/Diatomaceous_earth

   Diatomite rock sample from Sisquoc Formation Scanning electron micrograph of diatomaceous earth. Diatomaceous earth (/ ˌ d aɪ. ə t ə ˈ m eɪ ʃ ə s / DY-ə-tə-MAY-shəs), also known as diatomite (/ d aɪ ˈ æ t ə m aɪ t / dy-AT-ə-myte), celite, or kieselguhr, is a naturally occurring, soft, siliceous sedimentary rock that can be crumbled into a fine white to off-white powder.

3. Sisquoc Formation - Wikipedia

   en.wikipedia.org/wiki/Sisquoc_Formation

   Diatomite quarries near Lompoc, California (2009), are a major source of diatomaceous earth. The Sisquoc Formation is important as a source of diatomaceous earth and as a petroleum reservoir. As a stratigraphic member of petroleum reservoirs, it can be both a reservoir and a sealing unit.

4. Micropaleontology - Wikipedia

   en.wikipedia.org/wiki/Micropaleontology

   This image of diatomaceous earth particles in water is at a scale of 6.236 pixels/μm, the entire image covers a region of approximately 1.13 by 0.69 mm Main article: Microfossil Microfossils are fossils that are generally between 0.001mm and 1 mm in size, [ 1 ] the study of which requires the use of light or electron microscopy .

5. Diatom - Wikipedia

   en.wikipedia.org/wiki/Diatom

   Diatomaceous earth (diatomite) is a collection of diatom shells found in the Earth's crust. They are soft, silica-containing sedimentary rocks which are easily crumbled into a fine powder and typically have a particle size of 10 to 200 μm.

6. Opal - Wikipedia

   en.wikipedia.org/wiki/Opal

   These cell walls or "tests" form the “grains” for the diatomaceous earth. This sedimentary rock is white, opaque, and chalky in texture. [ 17 ] Diatomite has multiple industrial uses such as filtering or adsorbing since it has a fine particle size and very porous nature, and gardening to increase water absorption.

7. Diatomaceous earth filtration - Wikipedia

   en.wikipedia.org/wiki/Diatomaceous_earth_filtration

   Diatomaceous earth filtration is a special filtration process that removes particles from liquids as it passes through a layer of fossilized remains of microscopic water organism called diatoms. These diatoms are mined from diatomite deposits which are located along the Earth's surface as they have accumulated in sediment of open and moving ...