sepiolite

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]

* * *

also called  Meerschaum 
 (German: “sea-foam”), a fibrous hydrated magnesium silicate, Mg4Si6O15(OH)2·6H2O, that is opaque and white, grey, or cream in colour. It may resemble the bones of the cuttlefish Sepia, from which the name derives. In the Black Sea region, where the light, porous clay mineral is abundant, it is said to resemble sea-foam, hence the German name. For its chemical formula, structure, and physical properties, see clay mineral (table).

      As in palygorskite, the structure of sepiolite contains extended silicon-oxygen sheets, so that the mineral belongs to the layer silicate family, but the tetrahedral SiO4 groups forming these sheets are oriented so as to develop extended lathlike features that give rise to the fibrous character of the mineral.

      Sepiolite's chief use is for tobacco pipes (pipe). The most important commercial deposit is the plain of Eskişehir, Tur., where it is found as irregular nodules in alluvial deposits; it is an alteration product of serpentine. When first extracted, sepiolite is soft, but it hardens on drying. Sepiolite also occurs in France, Greece, the Czech Republic, and the United States.

* * *


Universalium. 2010.

Look at other dictionaries:

  • 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 — 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… …   Wikipedia

  • 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 — 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

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”