phillipsite

phillipsite
/fil"ip suyt'/, n.
a zeolite mineral, similar to stilbite but with potassium replacing some of the calcium.
[1815-25; named after J. W. Phillips (1775-1828), English mineralogist; see -ITE1]

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      hydrated calcium, sodium, and potassium aluminosilicate mineral in the zeolite family [(K,Na,Ca)1-2(Si,Al)8O16·6H2O]. It typically is found as brittle white crystals filling cavities and fissures in basalt and in phonolite lava, occurring near Rome; on Sicily; in Victoria, Australia; and in Germany. Phillipsite's molecular structure is a framework containing rings of four or eight linked silicate or aluminate tetrahedra (each consisting of four oxygen atoms arranged at the points of a triangular pyramid about a central silicon or aluminum atom); the openness of this structure and the presence of the aluminum atoms (each of which contributes a negatively charged site) give phillipsite cation-exchange properties (dissolved sodium, potassium, calcium, and magnesium readily replacing one another in the structure), making phillipsite useful in water softeners (water softener). For detailed physical properties, see zeolite (table). Compare harmotome.

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Universalium. 2010.

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  • Phillipsite — is a mineral of the zeolite group; a hydrated potassium, calcium and aluminium silicate, approximating to (Ca,Na2,K2)3Al6Si10O32 middot;12H2O. (Also with sodium replaced by calcium: KCaAl3Si5O16 middot;6H2O [… …   Wikipedia

  • Phillipsite — Phil lips*ite, n. [So named after John Phillips, an English mineralogist.] (Min.) (a) A hydrous silicate of aluminia, lime, and soda, a zeolitic mineral commonly occurring in complex twin crystals, often cruciform in shape; called also… …   The Collaborative International Dictionary of English

  • phillipsite — ● phillipsite nom féminin (de W. Phillips, nom propre) Aluminosilicate de calcium et potassium, appartenant au groupe des zéolites …   Encyclopédie Universelle

  • phillipsite — noun A mineral of the zeolite group, a hydrated potassium, calcium and aluminium silicate with monoclinic crystals. Syn: christianite …   Wiktionary

  • phillipsite — phil·li·psì·te s.f. TS miner. minerale del gruppo delle zeoliti, monoclino, incolore, costituito da potassio e calcio {{line}} {{/line}} DATA: 1875. ETIMO: der. di Phillips, nome del mineralogista inglese W. Phillips (1775 1828), con 2 ite …   Dizionario italiano

  • phillipsite — phil·lips·ite …   English syllables

  • phillipsite — noun a group of white or reddish crystalline minerals of the zeolite family consisting of a hydrous silicate of calcium and potassium and aluminum • Hypernyms: ↑zeolite …   Useful english dictionary

  • christianite — Phillipsite Phil lips*ite, n. [So named after John Phillips, an English mineralogist.] (Min.) (a) A hydrous silicate of aluminia, lime, and soda, a zeolitic mineral commonly occurring in complex twin crystals, often cruciform in shape; called… …   The Collaborative International Dictionary of English

  • List of minerals N-R (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia

  • Phillipsit — Dieser Artikel wurde aufgrund von formalen Mängeln an Gestaltung bzw. Form und/oder inhaltlichen Mängeln auf der Qualitätssicherungsseite des WikiProjekts Minerale eingetragen. Dies geschieht, um die Qualität der Artikel aus dem Themengebiet… …   Deutsch Wikipedia

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