Major and trace elements in the Allende meteorite
Major and trace elements in the Allende meteorite
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阿连德陨石中的主量元素和微量元素
作者：
Philip M. Martin;B. Mason
我们已经确定了主元素和微量元素丰度的7个钙，铝丰富的聚集体，10黄长石球粒，橄榄石球粒和两个富含橄榄石聚集体的阿连德陨石，III型碳质球粒陨石。用Reed和Ware1描述的电子探针技术测定主要元素丰度。MS 7火花源质谱仪用于测定痕量元素丰度。所使用的技术是泰勒2所描述的，但改进和扩展的数据减少技术。对于稀土元素（REEs），其精度约为±5%，准确度约为± 10%，但略有不同，对于质量数低于105的元素，其准确度比质量数较高的元素差。
WE have determined major and trace element abundances for seven Ca,Al-rich aggregates, ten melilite chondrules, and an olivine chondrule and two olivine-rich aggregates from the Allende meteorite, a type III carbonaceous chondrite. Major element abundances were determined with the electron microprobe technique described by Reed and Ware1. An MS7 spark source mass spectrometer was used for the determination of trace element abundances. The technique used was that described by Taylor2 but with improved and extended data reduction techniques. The precision is about ±5% for the rare earth elements (REEs) and the accuracy about ±10%, but varies somewhat, being poorer for elements below mass number 105 than for those with higher mass numbers.