Watch the Dallas Symposium LIVE, and fundraiser auction
Ticket proceeds support mindat.org! - click here...
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Sigurdsson, Haraldur (1971) Feldspar relations in Icelandic alkalic rhyolites. Mineralogical Magazine, 38 (296) 503-510 doi:10.1180/minmag.1971.038.296.13

Advanced
   -   Only viewable:
Reference TypeJournal (article/letter/editorial)
TitleFeldspar relations in Icelandic alkalic rhyolites
JournalMineralogical Magazine
AuthorsSigurdsson, HaraldurAuthor
Year1971 (December)Volume38
Issue296
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_38/38-296-503.pdf+
DOIdoi:10.1180/minmag.1971.038.296.13Search in ResearchGate
Generate Citation Formats
Mindat Ref. ID6509Long-form Identifiermindat:1:5:6509:6
GUID0
Full ReferenceSigurdsson, Haraldur (1971) Feldspar relations in Icelandic alkalic rhyolites. Mineralogical Magazine, 38 (296) 503-510 doi:10.1180/minmag.1971.038.296.13
Plain TextSigurdsson, Haraldur (1971) Feldspar relations in Icelandic alkalic rhyolites. Mineralogical Magazine, 38 (296) 503-510 doi:10.1180/minmag.1971.038.296.13
In(1971, December) Mineralogical Magazine Vol. 38 (296) Mineralogical Society
Abstract/NotesSummaryAlkalic rhyolites with peralkaline affinities, bearing quartz and potassic feldspar phenocrysts, are described from Iceland for the first time. Evidence from electron-probe analyses of feldspar phenocrysts indicates crystallization in or near the thermal valley of the system SiO2-Or-Ab. Icelandic acid volcanic rocks are subdivided into alkalic rhyolites, belonging to transitional and alkalic basalt lineages, and the mildly calc-alkaline rhyolites of tholeiite lineages.

See Also

These are possibly similar items as determined by title/reference text matching only.

Chatterjee, A. C. (1971) Levyne in the Deccan traps. Mineralogical Magazine, 38 (296) 527-528 doi:10.1180/minmag.1971.038.296.20
Sigurdsson, Haraldur (1971) Feldspar relations in a composite magma. Lithos, 4 (3) 231-238 doi:10.1016/0024-4937(71)90003-x
Parsons, Ian, Boyd, Rognvald (1971) Distribution of potassium feldspar polymorphs in intrusive sequences. Mineralogical Magazine, 38 (295) 295-311 doi:10.1180/minmag.1971.038.295.03
Leake, Bernard E. (1971) On aluminous and edenitic hornblendes. Mineralogical Magazine, 38 (296) 389-407 doi:10.1180/minmag.1971.038.296.01
Sabzehei, M. (1971) Dumortierite from Iran: a first record. Mineralogical Magazine, 38 (296) 526-527 doi:10.1180/minmag.1971.038.296.19
Sigurdsson, Haraldur (1977) Generation of Icelandic rhyolites by melting of plagiogranites in the oceanic layer. Nature, 269 (5623). 25-28 doi:10.1038/269025a0
Konta, J. (1971) Shape analysis of moldavites and their impact origin. Mineralogical Magazine, 38 (296) 408-417 doi:10.1180/minmag.1971.038.296.02
Dodd, R. T. (1971) Calc-aluminous insets in olivine of the Sharps chondrite. Mineralogical Magazine, 38 (296) 451-458 doi:10.1180/minmag.1971.038.296.07
Hall, A., Taylor, J. D. (1971) The occurrence of vaterite in gastropod egg-shells. Mineralogical Magazine, 38 (296) 521-522 doi:10.1180/minmag.1971.038.296.17
King, Robert J., Dixon, John A. (1971) A new occurrence of vanadium minerals in Leicestershire. Mineralogical Magazine, 38 (296) 488-492 doi:10.1180/minmag.1971.038.296.11
Griffin, W. L. (1971) Mineral reactions at a peridotite-gneiss contact, Jotunheimen, Norway. Mineralogical Magazine, 38 (296) 435-445 doi:10.1180/minmag.1971.038.296.05
 
and/or  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, except where stated. Most political location boundaries are Β© OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: August 15, 2025 15:18:50
Go to top of page