The paper presents results of SIMS and SEM-EDS studies of the silicate minerals from one radial and one granular chondrule of the Buschhof ordinary equilibrated L6 chondrite and discusses geochemical features of the olivine, pyroxene, and plagioclase from the chondrules and matrix of this meteorite. Results show that pyroxene and plagioclase from the radial chondrule did not preserve the chondritic Ca/Al and Y/Ho ratios and positive correlation between La and Yb. Olivine from the granular chondrule has no traces of cosmochemical fractionation. The fact that chondritic element ratios preserve in the silicates of the granular chondrule indicates chondrule formation by the melting of refractory chondrule precursors. Both chondrules show evidence of interaction with the nebular gas and thermal metamorphism. The differences in the concentrations of trace elements in minerals of the chondrules and matrix reflect the rapid cooling of the silicate phases from the central part of the chondrule toward the meteorite matrix.

中文翻译：

---

布施霍夫陨石球粒和基质中硅酸盐矿物的微量元素组成

本文介绍了对来自 Buschhof 普通平衡 L6 球粒陨石的一个径向和一个颗粒球粒的硅酸盐矿物的 SIMS 和 SEM-EDS 研究结果，并讨论了来自该陨石球粒和基质的橄榄石、辉石和斜长石的地球化学特征。结果表明，来自放射状球粒的辉石和斜长石并没有保留球粒状的 Ca/Al 和 Y/Ho 比率以及 La 和 Yb 之间的正相关。来自粒状球粒的橄榄石没有宇宙化学分馏的痕迹。球粒陨石元素比率保留在粒状球粒的硅酸盐中的事实表明球粒是由难熔球粒前体的熔化形成的。两个球粒都显示出与星云气体和热变质作用相互作用的证据。