caa a22 4500 467889902 CHVBK 20180406152746.0 cr unu---uuuuu 170328e20061001xx s 000 0 eng 10.1007/s00710-006-0134-8 doi (NATIONALLICENCE)springer-10.1007/s00710-006-0134-8 Quartz from Allchar as monitor for cosmogenic 26Al: Geochemical and petrogenetic constraints [Elektronische Daten] [M. K. Pavićević, V. Cvetković, G. Amthauer, A. Bieniok, B. Boev, F. Brandstätter, M. Götzinger, R. Jelenković, D. Prelević, T. Prohaska] Summary: Results of a multidisciplinary study on quartz concentrates (mineralogically separated) and etched concentrates (stoichiometric quartz) from three locations at Allchar (Macedonia) are presented. The investigation of quality and composition of these quartz samples is of great interest because the same material has been previously used as monitor for 26Al Acceleration Mass-Spectrometry (AMS) erosion rate estimates. Two genetically different types of quartz are distinguished in the studied samples which petrologically can be described as hydrothermally altered dacites or quartz latites; i.e. volcanic (QV) and hydrothermal (QH) quartz with relative proportions of QH:QV around 3:2. QH is genetically related to the Allchar Sb-As-Tl-S mineralization having very high Sb (85-785 ppm), As (7.6-78 ppm) and (Tl 3.3-4.0 ppm) contents. This type of quartz is also characterized by very high Li (129-138 ppm), Al (2424-2520 ppm) and Ti (153-219 ppm) concentrations. QV appears to be much less enriched in trace elements having Al and K contents ranging from 0 to 280 ppm and from 50 to 85 ppm, respectively. 26Al AMS measurements were done on the samples containing two genetically different types of quartz but this had no effects on the interpretation and erosion rate determinations. However, the extremely high Al concentrations in the analyzed quartz have generally negative effects, mainly by decreasing 26Al/27Al ratios and thus causing an increase of the detection limit. The disagreement between the results of 26Al AMS analyses and quantitative geomorphologic data for one location is probably caused by different geographical position with respect to the direction of cosmic rays. Springer-Verlag, 2006 Pavićević M. K. Division of Mineralogy and Material Sciences, University of Salzburg, Salzburg, Austria aut Cvetković V. Division of Mineralogy and Material Sciences, University of Salzburg, Salzburg, Austria aut Amthauer G. Division of Mineralogy and Material Sciences, University of Salzburg, Salzburg, Austria aut Bieniok A. Division of Mineralogy and Material Sciences, University of Salzburg, Salzburg, Austria aut Boev B. Faculty of Mining and Geology, University of Skopje, Štip, Macedonia aut Brandstätter F. Department for Mineralogy and Petrology, Natural History Museum, Vienna, Austria aut Götzinger M. Institute for Mineralogy and Christallography, University of Vienna, Vienna, Austria aut Jelenković R. Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia aut Prelević D. Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia aut Prohaska T. Division of Analytical Chemistry, Department of Chemistry, VIRIS laboratory, University of Natural Resources and Applied Life Sciences (BOKU), Vienna, Austria aut Mineralogy and Petrology Springer-Verlag 88/3-4(2006-10-01), 527-550 0930-0708 88:3-4<527 2006 88 710 https://doi.org/10.1007/s00710-006-0134-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00710-006-0134-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pavićević M. K. Division of Mineralogy and Material Sciences, University of Salzburg, Salzburg, Austria aut NATIONALLICENCE 700 1- Cvetković V. Division of Mineralogy and Material Sciences, University of Salzburg, Salzburg, Austria aut NATIONALLICENCE 700 1- Amthauer G. Division of Mineralogy and Material Sciences, University of Salzburg, Salzburg, Austria aut NATIONALLICENCE 700 1- Bieniok A. Division of Mineralogy and Material Sciences, University of Salzburg, Salzburg, Austria aut NATIONALLICENCE 700 1- Boev B. Faculty of Mining and Geology, University of Skopje, Štip, Macedonia aut NATIONALLICENCE 700 1- Brandstätter F. Department for Mineralogy and Petrology, Natural History Museum, Vienna, Austria aut NATIONALLICENCE 700 1- Götzinger M. Institute for Mineralogy and Christallography, University of Vienna, Vienna, Austria aut NATIONALLICENCE 700 1- Jelenković R. Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia aut NATIONALLICENCE 700 1- Prelević D. Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia aut NATIONALLICENCE 700 1- Prohaska T. Division of Analytical Chemistry, Department of Chemistry, VIRIS laboratory, University of Natural Resources and Applied Life Sciences (BOKU), Vienna, Austria aut NATIONALLICENCE 773 0- Mineralogy and Petrology Springer-Verlag 88/3-4(2006-10-01), 527-550 0930-0708 88:3-4<527 2006 88 710 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer