在 muong nong 型玻璃陨石中发现的锆石和铬铁矿晶体。

Zircon and chromite crystals in a muong nong-type tektite.

出版信息

Science. 1970 Aug 21;169(3947):766-9. doi: 10.1126/science.169.3947.766.

DOI:10.1126/science.169.3947.766

PMID:17820307

Abstract

Chromite, zircon, and quartz crystals (identified by x-ray diffraction) have been recovered from a 2.07-gram sample of Muong Nong-type tektite. The absence of eskolaite (Cr(2)O(3)) and baddeleyite (ZrO(2)) supports a previous conclusion that Muong Nong-type tektites were not heated as intensely as other tektite groups. X-ray asterism studies indicate that the crystals are shocked, which supports an impact origin. The presence of chromite and zircon together suggests that the Muong Nong-type tektite was produced from sedimentary material.

摘要

从 2.07 克芒农型玻璃质陨石样本中回收了铬铁矿、锆石和石英晶体（通过 X 射线衍射鉴定）。缺乏镁铝榴石（Cr2O3）和斜锆石（ZrO2）支持了之前的结论，即芒农型玻璃质陨石没有像其他玻璃质陨石群那样受到强烈的加热。X 射线星状结构研究表明，这些晶体受到了冲击，这支持了撞击起源的观点。铬铁矿和锆石的同时存在表明，芒农型玻璃质陨石是由沉积物质产生的。