近年来,关于宇宙尘的收集和研究已成为非常热门的课题,有关报道与日剧增。许多作者对铁陨石进行了剥蚀和消融模拟实验,建立了一系列鉴别铁陨石消融型宇宙尘的标准判据。其中一个有力的判据是,来自宇宙物质的剥蚀碎屑存在有在高温低氧分压下形成的亚稳态氧化铁——方铁矿。作者在研究新疆铁陨石表面多样品的微量元素分布规律过程中,发现铁陨石表面凹坑处分布着许多方铁矿瘤体,呈黑色和熔融残余状,表面有许多小气孔,经X In recent years, the collection and study of cosmic dust has become a very hot topic, with reports and Japanese drastic increases. Many authors have conducted experiments on denudation and ablation of iron meteorites and established a series of standard criteria for identifying cosmic dusts that are abolished by iron meteorites. One of the strong criteria is that the denuded debris from the cosmic material has metastable iron oxide-wurtite formed under high temperature and low oxygen partial pressure. In the process of studying the distribution of trace elements in many samples on the surface of iron meteorites in Xinjiang, we found that there are many siderite tumors in the dimples on the surface of the iron meteorites, showing black and molten residuals. There are many small pores on the surface,