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Neiva, A. M. R. (1995) Distribution of trace elements in feldspars of granitic aplites and pegmatites from Alijó-Sanfins, northern Portugal. Mineralogical Magazine, 59 (394) 35-45 doi:10.1180/minmag.1995.59.394.04

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Reference TypeJournal (article/letter/editorial)
TitleDistribution of trace elements in feldspars of granitic aplites and pegmatites from Alijó-Sanfins, northern Portugal
JournalMineralogical MagazineISSN0026-461X
AuthorsNeiva, A. M. R.Author
Year1995 (March)Volume59
Issue394
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_59/59-394-35.pdf+
DOIdoi:10.1180/minmag.1995.59.394.04Search in ResearchGate
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Mindat Ref. ID2610Long-form Identifiermindat:1:5:2610:3
GUID0
Full ReferenceNeiva, A. M. R. (1995) Distribution of trace elements in feldspars of granitic aplites and pegmatites from Alijó-Sanfins, northern Portugal. Mineralogical Magazine, 59 (394) 35-45 doi:10.1180/minmag.1995.59.394.04
Plain TextNeiva, A. M. R. (1995) Distribution of trace elements in feldspars of granitic aplites and pegmatites from Alijó-Sanfins, northern Portugal. Mineralogical Magazine, 59 (394) 35-45 doi:10.1180/minmag.1995.59.394.04
In(1995, March) Mineralogical Magazine Vol. 59 (394) Mineralogical Society
Abstract/NotesAbstractAt Alijó-Sanfins there are many granitic aplite and pegmatite veins crosscutting different petrographic facies of the Hercynian granite batholith and also mica-schists. They are tin-bearing granitic rocks. Thirty-four samples of K-feldspar and 34 of albite from these veins and host granites were analysed to establish the distribution of elements and their fractionation trends in the sequence of feldspar crystallization. Rubidium and Cs increase, and Ba, Sr, Ba/K, Sr/K and K/Rb decrease in K-feldspar, whereas Na increases and Sr and Ca decrease in albite, from granites to aplites and pegmatites. In a few aplite-pegmatite veins Rb, Rb/Ba and Rb/Sr increase and Ba, Sr, K/Rb and Ba/Sr decrease in K-feldspar, and Rb increases and Sr decreases in albite from aplite to coexisting pegmatite. Equilibrium was not attained for trace elements between coexisting feldspars.

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Hall, A., Neiva, A. M. R. (1990) Distribution of the ammonium ion in pegmatites, aplites and their minerals from central northern Portugal. Mineralogical Magazine, 54 (376) 455-461 doi:10.1180/minmag.1990.054.376.11
Mason, R. A. (1982) Trace element distributions between the perthite phases of alkali feldspars from pegmatites. Mineralogical Magazine, 45 (337) 101-106 doi:10.1180/minmag.1982.045.337.11
Neiva, A.M.R. (1977) Distribution of some elements between coexisting minerals from granites, aplites and pegmatites from central northern Portugal. Chemical Geology, 20. 223-233 doi:10.1016/0009-2541(77)90045-6
Neiva, A. M. R. (1976) The geochemistry of biotites from granites of northern Portugal with special reference to their tin content. Mineralogical Magazine, 40 (313) 453-466 doi:10.1180/minmag.1976.040.313.04
Neiva, A. M. R. (1998) Trace Element Partitioning Between Coexisting Biotite and Muscovite of Portuguese Granitic Differentiation Series. Mineralogical Magazine, 62 (2) 1069-1070 doi:10.1180/minmag.1998.62a.2.226
Manning, D. A. C. (1983) Chemical variation in garnets from aplites and pegmatites, peninsular Thailand. Mineralogical Magazine, 47 (344) 353-358 doi:10.1180/minmag.1983.047.344.10
Manning, D. A. C. (1984) Chemical variation in garnets from aplites and pegmatites, peninsular Thailand—a correction. Mineralogical Magazine, 48 (346) 149 doi:10.1180/minmag.1984.048.346.24
Gomes, M. E. P., Neiva, A. M. R. (2000) Chemical zoning of muscovite from the Ervedosa granite, northern Portugal. Mineralogical Magazine, 64 (2) 347-358 doi:10.1180/002646100549247
Neiva, A. M. R. (1984) Chromium-bearing kyanite from Mozambique. Mineralogical Magazine, 48 (349) 563-564 doi:10.1180/minmag.1984.048.349.18
Neiva, A.M.R. (1975) Geochemistry of coexisting aplites and pegmatites and of their minerals from central northern Portugal. Chemical Geology, 16 (3) 153-177 doi:10.1016/0009-2541(75)90025-x
Neiva, A. M. R. (1978) Barian chromium-bearing hydromuscovite from Mozambique. Mineralogical Magazine, 42 (322) 292-293 doi:10.1180/minmag.1978.042.322.28
 
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