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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. Wikipedia : Picture peer review/Diatomaceous earth

   en.wikipedia.org/.../Diatomaceous_earth

   Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

4. Biogenic silica - Wikipedia

   en.wikipedia.org/wiki/Biogenic_silica

   Diatomaceous earth is made up of diatom cell walls, an example of biogenic silica. Silica is synthesised in the diatom cell by the polymerisation of silicic acid. 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.

5. 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 ...

6. Protist shell - Wikipedia

   en.wikipedia.org/wiki/Protist_shell

   Diatomaceous earth is a soft, siliceous, sedimentary rock made up of microfossils in the form of the frustules (shells) of single cell diatoms. This sample consists of a mixture of centric (radially symmetric) and pennate (bilaterally symmetric) diatoms.

7. Monterey Formation - Wikipedia

   en.wikipedia.org/wiki/Monterey_Formation

   Fold in Monterey Formation Fossil crab (Pinnixa galliheri), Monterey Formation, Pacific Grove, California. Carapace is about 3 cm. wide. Diatomite (diatomaceous earth), Monterey Formation, from a diatomite quarry just south of Lompoc Heavy oil saturated sandstone from a unit of the Monterey Formation.