Sepiolite

Sepiolite

Sepiolite is a clay mineral, a complex magnesium silicate, a typical formula for which is Mg4Si6O15(OH)2 • 6H2O. It can be present in fibrous, fine-particulate, and solid forms. It is used in oil drilling, for cat litter and also in a solid form known as Meerschaum for carving.

The name comes from a perceived resemblance of the material to the porous bones of the cuttlefish or sepia. On account of its low specific gravity, one to two, and its porosity, it may float upon water, hence its German name Meerschaum ("sea foam").

Owing to its fibrous mineral nature, sepiolite veins may contain the hazardous material, asbestos; even where asbestos is not present, sepiolite is often mistaken for it. Careful analytical techniques may be required to distinguish the two.

References

* [http://webmineral.com/data/Sepiolite.shtml Webmineral data]
* [http://www.hse.gov.uk/lau/lacs/37-2.htm UK HSE]
* [http://www.inchem.org/documents/ehc/ehc/ehc53.htm International Programme on Chemical Safety]


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  • Sépiolite — de Východná, Slovaquie Général Classe de Strunz …   Wikipédia en Français

  • sépiolite — [ sepjɔlit ] n. f. • 1892; all. Sepiolith (1847), du gr. sêpion « os de seiche » (→ sépia) et lithe ♦ Minér. Silicate hydraté naturel de magnésium. ⇒ écume (de mer), magnésite. ● sépiolite nom féminin (grec sêpion, os de seiche) Synonyme de écume …   Encyclopédie Universelle

  • Sepiolite — Sépiolite La sépiolite est une minéral du groupe des argiles à structure fibreuse. Chaque fibre est formée d une multitude de tunnels (ou canalicules) d environ 1 nm2 régulièrement espacés. Cette configuration particulière en briques creuses… …   Wikipédia en Français

  • Sepiolite — Se pi*o*lite , n. [Septa + lite.] (Min.) Meerschaum. See {Meerschaum}. [1913 Webster] …   The Collaborative International Dictionary of English

  • sepiolite — s.f. [comp. del gr. sēpía seppia (cui fu attribuito erroneam. il sign. di schiuma di mare ) e lite ]. (miner.) [fillosilicato idrato di magnesio, di colore bianco grigiastro, usato per la fabbricazione di pipe e sim.] ▶◀ Ⓖ schiuma di mare …   Enciclopedia Italiana

  • sepiolite — [sē′pē ə līt΄] n. [Ger sepiolith < Gr sēpion, cuttlebone < sēpia (see SEPIA) + lith (see LITH)] MEERSCHAUM (sense 1) …   English World dictionary

  • sepiolite — /see pee euh luyt /, n. Mineral. meerschaum (def. 1). [1850 55; < G Sepiolit < Gk sépio(n) cuttlebone, pounce (deriv. of sepía SEPIA) + G lit LITE] * * * ▪ mineral also called  Meerschaum   (German: “sea foam”), a fibrous hydrated magnesium… …   Universalium

  • sepiolite — Meerschaum Meer schaum (m[=e]r sh[add]m; 277), n. [G., lit., sea foam; meer sea + schaum foam; but it perh. is a corruption of the Tartaric name myrsen. Cf. {Mere} a lake, and {Scum}.] 1. (Min.) A fine white claylike mineral, soft, and light… …   The Collaborative International Dictionary of English

  • sepiolite — sepiolitas statusas T sritis chemija apibrėžtis Molio mineralas. formulė Mg₄[(OH)₂|Si₆O₁₅]·6H₂O atitikmenys: angl. sepiolite rus. сепиолит …   Chemijos terminų aiškinamasis žodynas

  • sepiolite — noun Etymology: German Sepiolith, from Greek sēpion cuttlebone (from sēpia) + German lith lite Date: 1854 meerschaum 1 …   New Collegiate Dictionary

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