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Wyszukujesz frazę "Ensisheim chondrite" wg kryterium: Temat


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Tytuł:
Średni ciężar atomowy, średnia objętość i promień atomu chondrytu Creston (L5/6)
Mean atomic weight, mean volume and radius of atom of Creston (L5/6) chondrite
Autorzy:
Szurgot, Marian
Powiązania:
https://bibliotekanauki.pl/articles/30146488.pdf
Data publikacji:
2024-04
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Creston chondrite
Ensisheim chondrite
Jezersko chondrite
mean atomic weight
mean volume of atom
mean radius of atom
Opis:
Mean atomic weight Amean, mean volume and mean radius of atom of Creston ordinary chondrite (L5/6 S4 W0) felt in 2015 in Creston near Paso Robles, California has been calculated using literature data on chemical composition of the meteorite (Jenniskens et al. 2019). The aim of the studies was to determine Amean, Vatom, and Ratom values for this new meteorite, and compare the data with the values obtained for two other ordinary chondrites: Ensisheim (LL6), and Jezersko (H4). Calculations were conducted for the whole rock, for silicates, and for Fe, Ni metal of Creston, and Ensisheim chondrites. It was shown that the mean atomic weight of the whole rock of Creston chondrite Amean = 24.06. Creston’s silicates revealed the value: Ameansi = 21.92, and Creston’s Fe,Ni metal: Ameanmet = 56.25. It was calculated that the average volume of the Creston’s atom Vatom = 1.111·10–29 m3 (sample CR05), and 1.115·10–29 m3 (sample CR06). Average radius of Creston’s atom: Ratom = 138.5 pm, mean radius of atom of Creston silicates: Ratomsi = 138 pm, and mean radius of atom of Creston metal: Ratommet = 142 pm.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2024, 15; 116-128
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Średni ciężar atomowy chondrytu Ensisheim (LL6)
Mean atomic weight of Ensisheim LL6 chondrite
Autorzy:
Szurgot, Marian
Powiązania:
https://bibliotekanauki.pl/articles/1033088.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Ensisheim chondrite
LL6 chondrite
grain density
iron to silicon ratio
mean atomic number
mean atomic weight
ordinary chondrite
Opis:
Mean atomic weight Amean of Ensisheim (LL6, fall 1492) ordinary chondrite has been determined using literature data on chemical composition of the meteorite and using relationships: between mean atomic weight and Fe/Si atomic ratio, between Amean and grain density, and between Amean and magnetic susceptibility (Szurgot 2015a–f, 2016a, b, d, e). It was shown that Ensisheim’s Amean = 23.32, and 23.06 for composition without water, and with H2O, respectively. These values are close to the mean atomic weight of LL chondrite falls (Amean = 23.36, and 23.03), and are close to Amean values of LL6 chondrite falls (Amean = 23.30, and 23.06, Szurgot 2016b). Ensisheim’s Fe/Si atomic ratio (0.509) leads to Amean = 23.16±0.12 which is close to the values determined by bulk composition. This means that Ensisheim belongs to LL6 chondrites, as previously classified (Jarosewich i Dodd 1985). Using dependence between mean atomic weight and grain density (Szurgot 2015a–c, 2016d) leads to Amean = 23.70±0.54 (dgr = 3.52±0.04 g/cm3, Macke 2010), and using dependence between Amean and magnetic susceptibility (Szurgot 2016a, d) gives Ameanc = 22.78±0.24 (logc = 4.15±0.09, Macke 2010). Arithmetic mean Amean (dgr) and Amean (logc) gives 23.24±0.65, and arithmetic mean of Amean (dgr), Amean (logc), and Amean(Fe/Si), gives 23.21±0.46 values close each other, and close to Amean(bulk composition) determined using compositional data. Mean atomic number Zmean, and Amean/Zmean ratio of the meteorite have been also determined. Ensisheim’s Zmean = 11.51 for composition without H2O, and 11.40 for composition with H2O. Amean/Zmean ratios are: 2.026 and 2.023, for composition without water, and with H2O, respectively. Ensisheim’s silicates shown values: Amean = 22.19, Zmean = 10.97, Amean/Z mean = 2.022, Fe/Si = 0.355, Amean(Fe/Si) = 22.28, and Fe, Ni metal values: Amean = 57.26, Zmean = 26.96, and Amean/Z mean = 2.124.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2017, 8; 110-122
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
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