Analüüs (XRF) proovist
Üldinfo
Metoodika | XRF |
Lisainfo | The bulk chemical composition and Fe2O3 total of the rocks was determined by XRF spectrometry in the laboratories of the All-Russian Geological Institute (VSEGEI), St. Petersburg. The samples were crushed by a ball mill till 5 microns. The weight of samples for analysis was 3 grams. The sample was pressed to stainless steal cuvette. The pressure was 1 ton. For the measurements the X-ray spectrometer SPM-25 (1988) was used. As the source of primary X-ray radiation there was used the X-ray tube with rhodium anode (3RXB). The time of exposition was 80 seconds. The reliability of the results of X-ray fluorescence anal¬ysis was controlled by standards that the GOST (USSR state standards) certificates have. The analyses were made according to the Instruction NSAM N-313-RS (VIMS, VSEGEI, 1990). The precision of the measurements was regulated by Instruction (OSM 41-08-212-82). All concentrations below the detection level were set to one-half of the detection limit. |
Lokaliteet |
Värska 3 puurauk
|
Sügavus | 556.2 |
Stratigraafia |
Ediacara
|
Litostratigraafia |
Kotlini kihistu
|
Asutus | TalTech geoloogia instituut |
Kirje lisatud | 2013-10-28 |
Kirje muudetud | 2014-01-09 |
Tulemused
Parameeter | Väärtus | Tekst | Viga |
---|---|---|---|
SiO2 [%] | 59.96 | ||
TiO2 [%] | 1.02 | ||
Al2O3 [%] | 19.85 | ||
Fe2O3total [%] | 5.26 | ||
MnO [%] | 0.0373 | ||
MgO [%] | 2.11 | ||
CaO [%] | 0.252 | ||
Na2O [%] | 0.124 | ||
K2O [%] | 5.01 | ||
P2O5 [%] | 0.061 | ||
S [%] | 0.059 | ||
Ba [ppm] | 0.0446 | ||
Cr [ppm] | 0.0096 | ||
V [ppm] | 0.012 | ||
LOI [%] | 6.26 |
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