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- Deutsches GeoForschungsZentrum GFZ
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- Accessory Minerals in Felsic Igneous Rocks - Part 5: Composition of monazite-(Ce), xenotime-(Y) and zircon from two geochemically distinct occurrences of highly evolved Li-F granite: The Pobershau-Satzung massif and the Seiffen granite (Erzgebirge−Vogtland metallogenic province, Germany)
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- Erzgebirge-Vogtland
- Variscan orogeny
- electron-microprobe analysis
- late Carboniferous
- magma differentiation
- mineral composition
- monazite
- rare earth elements
- thorium
- xenotime
- zircon
- F-rich Li-mica granite
- P-poor granite
- aluminous A-type granite
- transitional S-I-type P-rich granite
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This data set is the 5th fifth part of a series reporting chemical data for accessory minerals from felsic igneous rocks. Most data refer to plutonic rocks from the Saxothuringian Zone of the Variscan Orogen (Erzgebirge−Vogtland metallogenic province) in Germany performed between about 1995 and 2005 on surface rocks and borehole samples.
This data set assembles the results of electron-microprobe spot analyses of monazite-(Ce), xenotime-(Y) and zircon from two concealed, genetically distinct occurrences of evolved, F-rich Li-mica granite, that are the transitional S-I-type P-rich granites of Pobershau-Satzung (POB-SZU) and the P-poor granite of Seiffen (SEI), a representative of the class of aluminous A-type granites.
Of all three species, grains of abnormal composition are present, reflecting the evolved nature and specific composition of their granite hosts. The most striking differences in mineral composition between the two granite occurrences are displayed by a) the substitution reaction governing the incorporation of Th+U in monazite (cheralite substitution, Ca(Th,U)REE-2, in POB-SZU and huttonite substitution, Th(U)SiREE-1P-1, in SEI) and b) the chondrite-normalized REE patterns of xenotime (peaking at Tb-Dy in POB-SEI and Yb-Lu in SEI).
The data set contains the complete pile of electron-microprobe analyses for monazite-(Ce) (MONA-POB-SEI-NBZ2019), xenotime-(Y) (XENO-POB-SEI2019), and zircon (ZIRC-POB-SEI2019). All tables are presented as Excel (xlsx) and machine-readable csv formats. The content of the tables and further information on the granites and regional geology are provided in the data description file.
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