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Mockel, Roberten
Götze, Jensen
Sergeev, Sergey A.en
Kapitonov, Igor N.en
Adamskaya, Elena V.en
Goltsin, Nikolay A.en
Vennemann, Torstenen
2009-09-22T04:00:54Z
2009-09-22T04:00:54Z
2009-06en
http://elib.sfu-kras.ru/handle/2311/1282
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was applied to detect trace elements in agate from Permian volcanics (Nowy Kościoł, Poland) in low concentrations and with high spatial resolution. The used LA-ICP-MS system consists of a DUV 193 laser ablation system linked to a Thermo Finnigan Element 2 mass spectrometer. The use of a 193 nm ArF excimer laser (50-200 mJ energy output) and the standards NIST 611 and NIST 612 enables to produce and analyse small crater diameters down to 5 μm. Trace-element profiles have been analyzed for the elements Ti, Ge, Al, Fe, Mn, U, Th, Ba, Sr, Rb, Cs, and Y in the ppm- and sub-ppm level. The concentrations of the REE are sometimes below the detection limit of the method. Almost all elements (except Cu) display higher contents in chalcedony than in the macrocrystalline quartz. Fe, for instance, shows a 100 times higher concentration in agate bands compared to quartz, which may be due to finely distributed iron oxide particles in the chalcedony which probably act as colour pigments. The trace elements in agate are released simultaneously with Si during alteration of the surrounding volcanic rocks. Oxygen isotope data indicate that silica accumulation and agate formation took place at temperatures below 120°C. The characteristic trace-element distribution patterns in agate result from a self-purification process during crystallization of chalcedony and quartz from a silica gel.en
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Сибирский федеральный университет. Siberian Federal University.en
2009 2 ( 2 )en
Журнал Сибирского федерального университета. Техника и технологии. Journal of Siberian Federal University. Engineering & Technologies.en
agateen
quartzen
trace elementsen
LA-ICP-MSen
oxygen isotopesen
CLen
Nowy Kościόłen
Trace-Element Analysis by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS): a Case Study for Agates from Nowy Kościoł, Polanden
Journal Article
Published Journal Article
Mockel, Robert 14 Brennhausgasse, Freiberg, D-09596 Germanyen
Götze, Jens 14 Brennhausgasse, Freiberg, D-09596 Germanyen
Sergeev, Sergey A. 74 Sredny Prospekt, St.-Petersburg, 199106 Russiaen
Kapitonov, Igor N. 74 Sredny Prospekt, St.-Petersburg, 199106 Russiaen
Adamskaya, Elena V. 74 Sredny Prospekt, St.-Petersburg, 199106 Russiaen
Goltsin, Nikolay A. 74 Sredny Prospekt, St.-Petersburg, 199106 Russiaen
Vennemann, Torsten UNIL-BFSH2, CH-1015 Lausanne, Switzerland sazonov_am@mail.ruen
123-138en


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