Matches in SemOpenAlex for { <https://semopenalex.org/work/W2085911074> ?p ?o ?g. }
Showing items 1 to 87 of
87
with 100 items per page.
- W2085911074 endingPage "112" @default.
- W2085911074 startingPage "103" @default.
- W2085911074 abstract "Anorthite syntheses were performed at 2 GPa and 700 °C in a piston cylinder apparatus (Sr-anorthite) and at 200 and 500 MPa and 800–850 °C in a cold-seal hydrothermal apparatus (Ca- and Sr-anorthite). Furthermore a natural plagioclase sample from Monte Somma, Italy was included in the study. The low-pressure anorthite samples consist of crystals about 10 μm in size, which were investigated by powder FTIR spectroscopy and powder X-ray diffraction. Rietveld refinement indicated single-phase anorthite products of triclinic symmetry ( P 1) for the Ca-anorthite experiments and a mixture of Sr-slawsonite, strontianite and Sr-anorthite of monoclinic symmetry (space group I2/c, Chiari et al. , 1975) for the Sr-anorthite experiments. The 500 MPa Ca-anorthite exhibits an IR pattern very similar to those described for natural plagioclase, e.g. one broad OH-band observed at low energies (around 3200 cm −1 ). OH incorporation in Ca-anorthite seems to increase with pressure: at 500 MPa/800 °C it contains about 1300 wt. ppm H 2 O while at 200 MPa/850 °C no hydroxyl groups could be detected. The high-pressure Sr-anorthite sample consists of 50–300 μm large clear single crystals of monoclinic symmetry, which were investigated by polarised single-crystal FTIR spectroscopy, TEM using the FIB technique and powder X-ray diffraction. Polarised single-crystal infrared spectra in the OH stretching region showed a relative broad but weak band centred around 3400 cm −1 plus three sharp and intense bands: ν 3 at 3629 cm −1 , ν 2 at 3597 cm −1 and ν 1 at 3500 cm −1 . We interpret the broad band to be due to stretching vibrations of structural H 2 O and/or molecular water in inclusions. From the pleochroic behaviour we assigned ν 1 and ν 2 to O C (z)–H1 (O C (z)–H2) dipoles bonded both to O D (z) oxygens but occurring in different chemical environments Al (Si). Vibration ν 3 is assigned to an O B (0)–H3 dipole. The hydroxyl plus water content of the synthetic Sr-anorthite is 1100 ppm and hydroxyl concentration about 400–500 wt. ppm." @default.
- W2085911074 created "2016-06-24" @default.
- W2085911074 creator A5014536433 @default.
- W2085911074 creator A5037054243 @default.
- W2085911074 creator A5042706080 @default.
- W2085911074 creator A5062295948 @default.
- W2085911074 creator A5078200626 @default.
- W2085911074 date "2010-03-18" @default.
- W2085911074 modified "2023-10-02" @default.
- W2085911074 title "Location and quantification of hydrogen in Ca- and Sr-anorthite" @default.
- W2085911074 cites W1879177469 @default.
- W2085911074 cites W1962482944 @default.
- W2085911074 cites W1964011211 @default.
- W2085911074 cites W1970967823 @default.
- W2085911074 cites W1977428924 @default.
- W2085911074 cites W2000713746 @default.
- W2085911074 cites W2001724101 @default.
- W2085911074 cites W2020891191 @default.
- W2085911074 cites W2024196244 @default.
- W2085911074 cites W2037355353 @default.
- W2085911074 cites W2055768102 @default.
- W2085911074 cites W2062364076 @default.
- W2085911074 cites W2063080801 @default.
- W2085911074 cites W2087599655 @default.
- W2085911074 cites W2093541761 @default.
- W2085911074 cites W2124298845 @default.
- W2085911074 cites W2253007389 @default.
- W2085911074 cites W2256699149 @default.
- W2085911074 cites W2337036008 @default.
- W2085911074 cites W2588970154 @default.
- W2085911074 cites W2966212789 @default.
- W2085911074 cites W3185674536 @default.
- W2085911074 doi "https://doi.org/10.1127/0935-1221/2010/0022-1980" @default.
- W2085911074 hasPublicationYear "2010" @default.
- W2085911074 type Work @default.
- W2085911074 sameAs 2085911074 @default.
- W2085911074 citedByCount "7" @default.
- W2085911074 countsByYear W20859110742012 @default.
- W2085911074 countsByYear W20859110742015 @default.
- W2085911074 countsByYear W20859110742017 @default.
- W2085911074 countsByYear W20859110742018 @default.
- W2085911074 countsByYear W20859110742020 @default.
- W2085911074 crossrefType "journal-article" @default.
- W2085911074 hasAuthorship W2085911074A5014536433 @default.
- W2085911074 hasAuthorship W2085911074A5037054243 @default.
- W2085911074 hasAuthorship W2085911074A5042706080 @default.
- W2085911074 hasAuthorship W2085911074A5062295948 @default.
- W2085911074 hasAuthorship W2085911074A5078200626 @default.
- W2085911074 hasConcept C107872376 @default.
- W2085911074 hasConcept C113196181 @default.
- W2085911074 hasConcept C127313418 @default.
- W2085911074 hasConcept C17409809 @default.
- W2085911074 hasConcept C178790620 @default.
- W2085911074 hasConcept C185592680 @default.
- W2085911074 hasConcept C199289684 @default.
- W2085911074 hasConcept C2778993962 @default.
- W2085911074 hasConcept C512968161 @default.
- W2085911074 hasConceptScore W2085911074C107872376 @default.
- W2085911074 hasConceptScore W2085911074C113196181 @default.
- W2085911074 hasConceptScore W2085911074C127313418 @default.
- W2085911074 hasConceptScore W2085911074C17409809 @default.
- W2085911074 hasConceptScore W2085911074C178790620 @default.
- W2085911074 hasConceptScore W2085911074C185592680 @default.
- W2085911074 hasConceptScore W2085911074C199289684 @default.
- W2085911074 hasConceptScore W2085911074C2778993962 @default.
- W2085911074 hasConceptScore W2085911074C512968161 @default.
- W2085911074 hasIssue "1" @default.
- W2085911074 hasLocation W20859110741 @default.
- W2085911074 hasOpenAccess W2085911074 @default.
- W2085911074 hasPrimaryLocation W20859110741 @default.
- W2085911074 hasRelatedWork W1758497512 @default.
- W2085911074 hasRelatedWork W1987691177 @default.
- W2085911074 hasRelatedWork W2036099453 @default.
- W2085911074 hasRelatedWork W2124105426 @default.
- W2085911074 hasRelatedWork W2349947565 @default.
- W2085911074 hasRelatedWork W2361911732 @default.
- W2085911074 hasRelatedWork W2380934447 @default.
- W2085911074 hasRelatedWork W2538103680 @default.
- W2085911074 hasRelatedWork W2748952813 @default.
- W2085911074 hasRelatedWork W4235203013 @default.
- W2085911074 hasVolume "22" @default.
- W2085911074 isParatext "false" @default.
- W2085911074 isRetracted "false" @default.
- W2085911074 magId "2085911074" @default.
- W2085911074 workType "article" @default.