 | Harris, C., Cressey, G., Bell, J. D., Atkins, F. B., Beswetherick, S. (1982) An occurrence of rare-earth-rich eudialyte from Ascension Island, South Atlantic. Mineralogical Magazine, 46 (341) 421-425 doi:10.1180/minmag.1982.046.341.02 | Journal (article/letter/editorial) | | eudialyte from Ascension Island, South Atlantic C. HARRIS, G. CRESSEY, J. D. BELL, F. B. ATKINS, AND S. BESWETHERICK...BESWETHERICK Department of Geology and Mineralogy, Parks Road, Oxford ABSTRACT. A mineral closely resembling...arfvedsonite/aegirine perthite granites. The only singlecrystal X-ray pattern and chemistry has been found...block from the 5 Mile Post area on 30(1)] falls within group (iii). Ascension Island. To our knowledge...zirconium silicates, consists of perthite and quartz (often showing dalyite and vlasovite.Textural evidencesuggests |  | | Journal (article/letter/editorial) | | Mineralogy and Petrology Contrib Mineral Petrol (1985) 91:74-81 9 Springer-Verlag1985 Hydrogen and oxygen...geochemistry of Ascension Island lavas and granites: variation with crystal fractionation and interaction...interaction with sea water* Simon M.F. Sheppard and Chris Harris** Centre de Recherches P~trographiques et G6ochimiques...Vandoeuvre-l~s-Nancy, France Abstract. Lavas and pyroclastics on Ascension Island contain plutonic blocks that include...ratios, F and C1 have been analysed on whole rocks and/or minerals for lavas and granites, and D/H ratios |  | | Journal (article/letter/editorial) | | Magmatic Inclusions in the Plutonic Ejecta of Ascension Island by CHRIS HARRIS* (Received 25 May 1984; revised...Plutonic blocks' in the volcanic and pyroclastic rocks of Ascension Island contain a variety of silicate... mainly in the intermediate (monzonite-syenite) and granite types. The silicate melt inclusions consist...density CO2 + H 2 0 inclusions, predominantly vapour and (iii) high density approximately pure H2O inclusions...have contained greater than 5 wt. per cent H2O before saturation was reached and homogenization temperatures |
|
