Spark-source mass spectrometry for quantitative analysis of Apollo-17 lunar rock(70017-291) is described. About 5rag powder lunar rock sample, without any eanduetive material mixed in it, was pressed on the surface of...Spark-source mass spectrometry for quantitative analysis of Apollo-17 lunar rock(70017-291) is described. About 5rag powder lunar rock sample, without any eanduetive material mixed in it, was pressed on the surface of T type electrode. A single exposure was made under the optimum condition After development,the relative sensitivity, coefficients are calculated on the basis of the single exposure by U.S. Geological Survey Standard Rock AGV-1. More than 20 elements be be determined by this technique with a typical precision of ± 20%.展开更多
The results of Moessbauer study of Apollo-17 Mare basalt are reported in this paper.It has been revealed that Fe in iron.bearing minerals in the basalt is almost present in the form of Fe^3+, with Fe^3+ less than 3% o...The results of Moessbauer study of Apollo-17 Mare basalt are reported in this paper.It has been revealed that Fe in iron.bearing minerals in the basalt is almost present in the form of Fe^3+, with Fe^3+ less than 3% of total iron. The site occupancy of Fe^3+ ions at M1 and M2 is approximately 0.3 and the corresponding equilibrium constant K (T) is about 0.06, thus indicating that the mare basalt is formed through crystallization under high-temperature reducing and rather slow cooling conditions.展开更多
Apollo-17 mare basalt (70017-291) was quantitatively analyzed for Ca, Ti, Cr,In, Fe, etc. by proton-exciting X-ray analysis technique. A comparison of the analytical results with those determined on Apollo-11 and Apol...Apollo-17 mare basalt (70017-291) was quantitatively analyzed for Ca, Ti, Cr,In, Fe, etc. by proton-exciting X-ray analysis technique. A comparison of the analytical results with those determined on Apollo-11 and Apollo-12 mare basalt samples.展开更多
文摘Spark-source mass spectrometry for quantitative analysis of Apollo-17 lunar rock(70017-291) is described. About 5rag powder lunar rock sample, without any eanduetive material mixed in it, was pressed on the surface of T type electrode. A single exposure was made under the optimum condition After development,the relative sensitivity, coefficients are calculated on the basis of the single exposure by U.S. Geological Survey Standard Rock AGV-1. More than 20 elements be be determined by this technique with a typical precision of ± 20%.
文摘The results of Moessbauer study of Apollo-17 Mare basalt are reported in this paper.It has been revealed that Fe in iron.bearing minerals in the basalt is almost present in the form of Fe^3+, with Fe^3+ less than 3% of total iron. The site occupancy of Fe^3+ ions at M1 and M2 is approximately 0.3 and the corresponding equilibrium constant K (T) is about 0.06, thus indicating that the mare basalt is formed through crystallization under high-temperature reducing and rather slow cooling conditions.
文摘Apollo-17 mare basalt (70017-291) was quantitatively analyzed for Ca, Ti, Cr,In, Fe, etc. by proton-exciting X-ray analysis technique. A comparison of the analytical results with those determined on Apollo-11 and Apollo-12 mare basalt samples.
