We studied Fe-rich microspherules and microparticles found as inclusions within a gypsum host rock, sourced from the Kamsko-Ustyinskoe gypsum field (Republic of Tatarstan, Russia). Using both in situ and destructive microanalysis techniques (micro CT, XRF, SEM, EDS, and Raman spectroscopy), we examined a range of different possibilities of their origin and concluded that studied Upper Roadian microinclusions have an extraterrestrial genesis. This conclusion is based upon the similarity of microspherules both to the diagenetically altered I-type cosmic spherules and meteorite ablation spherules previously reported from modern and ancient sediments: spherical morphologies and sizes 10–150 μm, dendritic textures exhibiting cruciform or cellular arrangements, large sub-circular cavities representing the former position of weathered metal beads, irregular cavity networks, representing vesicles and vesicle networks of residual trapped volatile gases, and Fe-rich magnetite mineralogy. All microparticles and microspherules have experienced diagenetic alteration, connected with a total loss of Ni in the corrosion process and often recrystallization with Mn enrichment. Based on extraordinary concentration of extraterrestrial microspherules and quite similar to them in composition microparticles both mixed in the thin interlayer of studied sample, we hypothesized their meteor ablation origin.

我们研究了富含镁的微球和微粒，这些微粒是作为石膏基质岩石中的夹杂物而发现的，这些岩石来源于Kamsko-Ustyinskoe石膏田（俄罗斯Ta斯坦共和国）。使用原位和破坏性显微分析技术（显微CT，XRF，SEM，EDS和拉曼光谱），我们检查了其起源的一系列不同可能性，并得出结论，所研究的上Roadian微观包裹体具有地球外起源。该结论基于微球与先前从现代和古代沉积物中报道的双磁化I型宇宙球和陨石烧蚀球的相似性：球形形态和大小为10-150μm，树枝状织构显示出十字形或细胞排列，大的亚晶形-圆形空腔，代表风化金属珠的先前位置，不规则空腔网络，代表残留的捕获的挥发性气体的囊泡和囊泡网络，以及富铁磁铁矿矿物学。所有的微粒和微球都经历了成岩作用，与腐蚀过程中镍的全部流失有关，并经常随着锰的富集而重结晶。基于外星微球的超常浓度，并且在混合的研究样品的薄夹层中与它们组成的微粒非常相似，我们推测它们的流星消融起源。与腐蚀过程中Ni的全部流失有关，并经常通过Mn富集而重结晶。基于外星微球的超常浓度，并且在混合的研究样品的薄夹层中与它们组成的微粒非常相似，我们推测它们的流星消融起源。与腐蚀过程中Ni的全部流失有关，并经常通过Mn富集而重结晶。基于外星微球的超常浓度，并且在混合的研究样品的薄夹层中与它们组成的微粒非常相似，我们推测它们的流星消融起源。