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 | 548.5 |
| 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 [%] | 60.58 | ||
| TiO2 [%] | 1.06 | ||
| Al2O3 [%] | 20.29 | ||
| Fe2O3total [%] | 4.37 | ||
| MnO [%] | <.03000 | ||
| MgO [%] | 2.17 | ||
| CaO [%] | 0.217 | ||
| Na2O [%] | 0.161 | ||
| K2O [%] | 4.93 | ||
| P2O5 [%] | <.05000 | ||
| S [%] | 0.104 | ||
| Ba [ppm] | 0.0486 | ||
| Cr [ppm] | 0.0124 | ||
| V [ppm] | 0.0124 | ||
| LOI [%] | 6.31 |
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