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nosean

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Journal Article
Published: 21 January 2019
Mineralogical Magazine (2019) 83 (4): 607–614.
... See) paleovolcano, Eifel region, Rhineland-Palatinate, Germany. Associated minerals are sanidine, nosean, biotite, augite, titanite, ferriallanite-(La), magnetite, baddeleyite and a pyrochlore-group mineral. Stefanweissite is brown and reddish-brown, with adamantine lustre; the streak is light brown...
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Journal Article
Published: 01 May 2016
The Canadian Mineralogist (2016) 54 (3): 583–604.
... (H, C, and F) have been quantified for the first time (to the authors' knowledge) by SIMS, and in situ ion probe data were integrated with information derived from FTIR spectroscopy. The studied samples correspond to sodalite sensu stricto , nosean, and haüyne. SIMS measurements for H, F, and C...
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Journal Article
Published: 01 October 2015
American Mineralogist (2015) 100 (10): 2308–2322.
... phonolites: (1) haüyne-plagioclase-bearing Si-K-rich phonolite from Laacher See (Germany) and (2) nosean-nepheline-bearing Si-poor phonolite from Saghro (Morocco). In haüyne-bearing phonolites (55–59 wt% SiO 2 , K > Na, Na+K/Al = 0.96–1.08), we found that the low silica and low sodium activity promoted...
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Journal Article
Published: 01 October 2012
American Mineralogist (2012) 97 (10): 1653–1661.
... Crystal structures of sulfur-bearing sodalite-group minerals as calculated by DFT (this study): ( a ) lazurite; ( b ) genthelvite; ( c ) nosean. The colors for the elements are shown in the legend, and O atoms are not shown, but incorporated into tetrahedra. Table 1 Overview of the endmembers...
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Journal Article
Published: 01 June 2009
Mineralogical Magazine (2009) 73 (3): 399–413.
... shows that haüyne and nosean typically contain enclathrated CO 2 molecules, in addition to H 2 O and minor carbonate, while sodalite is virtually CO 2 -free. Detailed microspectrometric mappings show a non-homogeneous distribution of volatile constituents across the crystals, which may be related...
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Journal Article
Published: 01 August 2004
Mineralogical Magazine (2004) 68 (4): 591–614.
... of phenocrysts has led to the identification of black haüynes, blue lazurites and of Cl-rich white or black noseans. X-ray diffraction (XRD) study confirms the occurrence of nosean having a low symmetry ( P 23). Raman spectra and XRD data show that S is fully oxidized to SO 4 in black haü ynes and in white...
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Journal Article
Published: 01 February 1998
European Journal of Mineralogy (1998) 10 (1): 71–77.
Journal Article
Published: 01 August 1996
Mineralogical Magazine (1996) 60 (4): 617–622.
Journal Article
Published: 01 June 1989
The Canadian Mineralogist (1989) 27 (2): 165–172.
Journal Article
Published: 01 April 1989
American Mineralogist (1989) 74 (3-4): 394–410.
...Ishmael Hassan; Peter R. Buseck Abstract High‐resolution transmission electron microscopy has provided evidence for ordering of [Na 4 .SO 4 ] 2+ and [Na 4 .H 2 O] 4+ clusters in nosean, ideally Na 8 [Al 6 Si 6 O 24 ]SO 4 .H 2 O. Reflections of type hhl, l = 2 n + 1, indicate that space group P 4 3...
Journal Article
Published: 01 February 1971
American Mineralogist (1971) 56 (1-2): 292–306.
..., and will therefore precede nepheline in the crystallization sequence of phonolitic trachytes. If f cl 2 is not more than 10 8 greater than f F 2 villiaumite (NaF) or fluorite and nepheline will take the place of sodalite. ∆ G ° for nosean (Na 8 Al 6 Si 6 O 24 [SO 4 ]) has also been estimated, and it similarly can...
Journal Article
Published: 01 November 1959
Geological Magazine (1959) 96 (6): 503–504.
...Cecil Edgar Tilley Abstract In view of the use of the Wolf Rock nosean phonolite as a type example of a more sodic phonolite, based on an analysis in 1871, the rock has been reanalyzed and reexamined. The new analysis, spectrographic data, an analysis of the sanidine, and the norm are given...