Matches in SemOpenAlex for { <https://semopenalex.org/work/W2086543205> ?p ?o ?g. }
Showing items 1 to 92 of
92
with 100 items per page.
- W2086543205 abstract "Abstract Amphiboles approached edenite (NaCa 2 Mg 5 Si 7 AlO 22 (OH) 2 ), richterite (Na 2 CaMg 5 Si 8 O 22 (OH) 2 ), tremolite (□Ca 2 Mg 5 Si 8 O 22 (OH) 2 ) solid solutions were studied by conventional hydrothermal techniques employing the bulk compositions edenite, and edenite + additional quartz, all with excess H 2 O. For the stoichiometric edenite bulk composition + excess H 2 O, the equilibrium phase assemblage is diopside + Na-phlogopite + forsterite + fluid at, and just above the amphibole high-temperature limit at 850 ± 5°C, 500 bar, and 880 ± 5°C, 1000 bar. The breakdown temperature of sodic phlogopite is 855 ± 3°C at 500 bar, and 890 ± 5°C at 700 bar, producing nepheline + plagioclase (or melt), additional forsterite and fluid. Diopside and Na-phlogopite solid solution coexist over a broad P fluid - T region, even within the amphibole field, where they are associated with an edenite-richterite (-tremolite) solid solution of approximate composition Ed 35 Rc 50 Tr 15 . In the system edenite + 4 quartz + excess H 2 O, nearly pure tremolite and albite coexist stably between 670° and 830°C at 1000 bar and give way to the possibly metastable assemblage diopside + talc + albite below 670°C. In the presence of albite, tremolite reacts to produce diopside + quartz + enstatite + fluid above 830°C at 1000 bar. For the investigated silica-rich bulk composition, amphibole P fluid - T stability is divided by the albite melting curve into a tremolite + albite field, and a tremolite + aqueous melt field. Substantial equilibrium solid solution of tremolite towards edenite or richterite was not observed for silica-excess bulk compositions. Metastable edenite-rich amphiboles initially synthesized change to tremolite with increasing run length in the presence of free SiO 2 . Edenitic amphibole is stable only over a very limited temperature range in silica-undersaturated environments, thus accounting for its rarity in nature. Na-phlogopite solid solutions are also disfavored by high a SiO 2 ; even for nepheline-normative lithologies, a hypothesized rapid low-temperature conversion to vermiculite or smectite could partly explain the scarcity of sodic phlogopite in rocks." @default.
- W2086543205 created "2016-06-24" @default.
- W2086543205 creator A5022090949 @default.
- W2086543205 creator A5024121706 @default.
- W2086543205 creator A5043170326 @default.
- W2086543205 creator A5051271887 @default.
- W2086543205 date "1986-06-01" @default.
- W2086543205 modified "2023-09-27" @default.
- W2086543205 title "Phase relations to 3 kbar in the systems edenite + H2O and edenite + excess quartz + H2O" @default.
- W2086543205 cites W1982178399 @default.
- W2086543205 cites W1986499382 @default.
- W2086543205 cites W2012208193 @default.
- W2086543205 cites W2012675848 @default.
- W2086543205 cites W2016443993 @default.
- W2086543205 cites W2034490217 @default.
- W2086543205 cites W2039222439 @default.
- W2086543205 cites W2042639419 @default.
- W2086543205 cites W2085120567 @default.
- W2086543205 cites W2189286022 @default.
- W2086543205 cites W2268602179 @default.
- W2086543205 cites W2316318208 @default.
- W2086543205 cites W2317066762 @default.
- W2086543205 cites W2592675220 @default.
- W2086543205 cites W2782041858 @default.
- W2086543205 cites W2909858307 @default.
- W2086543205 cites W3125588148 @default.
- W2086543205 doi "https://doi.org/10.1016/0024-4937(86)90006-x" @default.
- W2086543205 hasPublicationYear "1986" @default.
- W2086543205 type Work @default.
- W2086543205 sameAs 2086543205 @default.
- W2086543205 citedByCount "9" @default.
- W2086543205 countsByYear W20865432052014 @default.
- W2086543205 crossrefType "journal-article" @default.
- W2086543205 hasAuthorship W2086543205A5022090949 @default.
- W2086543205 hasAuthorship W2086543205A5024121706 @default.
- W2086543205 hasAuthorship W2086543205A5043170326 @default.
- W2086543205 hasAuthorship W2086543205A5051271887 @default.
- W2086543205 hasConcept C127313418 @default.
- W2086543205 hasConcept C151730666 @default.
- W2086543205 hasConcept C159985019 @default.
- W2086543205 hasConcept C17409809 @default.
- W2086543205 hasConcept C192562407 @default.
- W2086543205 hasConcept C199289684 @default.
- W2086543205 hasConcept C2775859737 @default.
- W2086543205 hasConcept C2777018398 @default.
- W2086543205 hasConcept C2778302498 @default.
- W2086543205 hasConcept C2778882853 @default.
- W2086543205 hasConcept C2779870107 @default.
- W2086543205 hasConcept C4992710 @default.
- W2086543205 hasConcept C510490043 @default.
- W2086543205 hasConcept C67236022 @default.
- W2086543205 hasConceptScore W2086543205C127313418 @default.
- W2086543205 hasConceptScore W2086543205C151730666 @default.
- W2086543205 hasConceptScore W2086543205C159985019 @default.
- W2086543205 hasConceptScore W2086543205C17409809 @default.
- W2086543205 hasConceptScore W2086543205C192562407 @default.
- W2086543205 hasConceptScore W2086543205C199289684 @default.
- W2086543205 hasConceptScore W2086543205C2775859737 @default.
- W2086543205 hasConceptScore W2086543205C2777018398 @default.
- W2086543205 hasConceptScore W2086543205C2778302498 @default.
- W2086543205 hasConceptScore W2086543205C2778882853 @default.
- W2086543205 hasConceptScore W2086543205C2779870107 @default.
- W2086543205 hasConceptScore W2086543205C4992710 @default.
- W2086543205 hasConceptScore W2086543205C510490043 @default.
- W2086543205 hasConceptScore W2086543205C67236022 @default.
- W2086543205 hasLocation W20865432051 @default.
- W2086543205 hasOpenAccess W2086543205 @default.
- W2086543205 hasPrimaryLocation W20865432051 @default.
- W2086543205 hasRelatedWork W1967915591 @default.
- W2086543205 hasRelatedWork W1974724459 @default.
- W2086543205 hasRelatedWork W2007785040 @default.
- W2086543205 hasRelatedWork W2016443993 @default.
- W2086543205 hasRelatedWork W2032585744 @default.
- W2086543205 hasRelatedWork W2037065402 @default.
- W2086543205 hasRelatedWork W2039222439 @default.
- W2086543205 hasRelatedWork W2042639419 @default.
- W2086543205 hasRelatedWork W2043590319 @default.
- W2086543205 hasRelatedWork W2065539095 @default.
- W2086543205 hasRelatedWork W2072441494 @default.
- W2086543205 hasRelatedWork W2077787428 @default.
- W2086543205 hasRelatedWork W2099375827 @default.
- W2086543205 hasRelatedWork W2167383526 @default.
- W2086543205 hasRelatedWork W2327666931 @default.
- W2086543205 hasRelatedWork W2344880683 @default.
- W2086543205 hasRelatedWork W2531329040 @default.
- W2086543205 hasRelatedWork W2924778358 @default.
- W2086543205 hasRelatedWork W3021404025 @default.
- W2086543205 hasRelatedWork W3149361411 @default.
- W2086543205 isParatext "false" @default.
- W2086543205 isRetracted "false" @default.
- W2086543205 magId "2086543205" @default.
- W2086543205 workType "article" @default.