| Reference Type | Journal (article/letter/editorial) |
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| Title | Occurrence, composition and paragenesis of the zeolites and associated minerals in the alkaline basalt of a maar-type volcano at Haláp Hill, Balaton Highland, Hungary |
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| Journal | Mineralogical Magazine |
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| Authors | Kónya, P. | Author |
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| Szakáll, S. | Author |
| Year | 2011 (December) | Volume | 75 |
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| Issue | 6 |
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| Publisher | Mineralogical Society |
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| DOI | doi:10.1180/minmag.2011.075.6.2869Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 244197 | Long-form Identifier | mindat:1:5:244197:3 |
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| GUID | 0 |
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| Full Reference | Kónya, P., Szakáll, S. (2011) Occurrence, composition and paragenesis of the zeolites and associated minerals in the alkaline basalt of a maar-type volcano at Haláp Hill, Balaton Highland, Hungary. Mineralogical Magazine, 75 (6) 2869-2885 doi:10.1180/minmag.2011.075.6.2869 |
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| Plain Text | Kónya, P., Szakáll, S. (2011) Occurrence, composition and paragenesis of the zeolites and associated minerals in the alkaline basalt of a maar-type volcano at Haláp Hill, Balaton Highland, Hungary. Mineralogical Magazine, 75 (6) 2869-2885 doi:10.1180/minmag.2011.075.6.2869 |
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| Abstract/Notes | AbstractHaláp Hill is an eroded remnant of young (∼3 Ma) alkaline basalt in the western part of the Bakony–Balaton Highland Volcanic Field, Tapolca, Hungary. Cavities in the basalt contain miarolitic minerals (augite, apatite, magnetite, plagioclase and sanidine), zeolites (analcime, chabazite-Ca, chabazite-Na, garronite, gismondine, gmelinite-Ca, gmelinite-Na, gobbinsite, gonnardite-Na, natrolite, mesolite, phillipsite-Ca, phillipsite-K, phillipsite-Na and scolecite) and other secondary minerals (calcite, smectite-group minerals, goethite and Mn-oxides). Chabazite-Na, gmelinite-Ca, gonnardite-Na, phillipsite-Na and phillipsite-K are reported from Haláp Hill for the first time. The Ca-rich and Na-rich zeolites and abundant calcite were produced by hydrothermal alteration. Mineral assemblages were characterized by X-ray diffraction, differential thermal analysis, energy-dispersive spectrometry and wavelength-dispersive spectrometry. The secondary mineral assemblages were probably formed as a result of low-temperature hydrothermal activity at 50—100°C. Miarolitic minerals crystallized first in cavities in the basalt; they were followed by zeolite-group minerals and calcite. Analcime and phillipsite with or without chabazite/gmelinite/garronite or gobbinsite were the first zeolite-group minerals to crystallize; gonnardite-Na and natrolite crystallized later from Na-rich fluids. Calcite and smectite-group minerals crystallized continually. This paragenetic sequence is similar to others which have been reported in basalt from other localities in the Balaton Highland, Iceland and Northern Ireland. |
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