porcellanite

porcellanite
(por-sèl-la-ni-t') s. f.
Terme de minéralogie. Espèce de jaspe.

Dictionnaire de la Langue Française d'Émile Littré. . 1872-1877.

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  • Porcellanite — or porcelanite , is a hard, dense rock somewhat similar in appearance to unglazed porcelain. It is often an impure variety of chert containing clay and calcareous matter. [Porcellanite, Encyclopædia Britannica Premium Service.… …   Wikipedia

  • porcellanite — ▪ rock also spelled  porcelanite        hard, dense rock that takes its name from its resemblance to unglazed porcelain. Frequently porcellanite is an impure variety of chert containing clay and calcareous matter; when of this nature it is… …   Universalium

  • porcellanite —    A dense, siliceous rock formed as a indurated or baked clay or shale with a dull, light colored, cherty appearance, often found in the roof or floor of a burned out coal seam.    GG …   Glossary of landform and geologic terms

  • porcellanite — por·cel·la·nite …   English syllables

  • porcellanite — ˈ ̷ ̷s(ə)ləˌnīt noun ( s) Etymology: German porzellanit, from porzellan porcelain (from Italian porcellana) + it ite : a hard dense siliceous rock having the appearance of unglazed porcelain on fresh fractures …   Useful english dictionary

  • Tievebulliagh — (Taobh Builleach) Tievebulliagh, May 2007. Fragments of porcellanite can be seen among the dolerite in the scree. Elevation …   Wikipedia

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