Mushroom-shaped growth of crystals on the Moon
文献类型：期刊论文
| 作者 | Xi, Jiaxin2,3,4; Yang, Yiping2,4; He, Hongping2,3,4; Xian, Haiyang2,4; Li, Shan2,3,4; Lin, Xiaoju2,4; Zhu, Jianxi2,3,4; Teng, H. Henry1 |
| 刊名 | AMERICAN MINERALOGIST
 |
| 出版日期 | 2025-01-29 |
| 卷号 | 110期号:1页码:171-180 |
| 关键词 | Chang'e 5 lunar regolith whisker growth nanoparticles nonequilibrium crystallization impact melt chromite |
| ISSN号 | 0003-004X |
| DOI | 10.2138/am-2023-9214 |
| 英文摘要 | Over the past three decades, advances in crystal nucleation and growth have led to the understanding that crystallization proceeds through various pathways, ranging from the conventional atom-by-atom model to the particle aggregation- or amorphous transformation-based non-classical modes. Here, we present a novel mineralization mechanism exemplified by a lunar chromite formed via solid-liquid interface reactions through investigations of a lunar breccia returned by the Chang'e 5 mission. The chromite occurs in the middle of a whisker-shaped intergrowth structure made by olivine at the bottom and nanospheres of troilite and metallic iron at the top. Morphological observation and size statistics of the nanospheres, including those within the whisker structure and the others dispersed in glass, suggest the nanophases attached to olivine with coherent crystallographic orientations, possibly through an oriented aggregation process. The chromium deficiency in the olivine near the interface between olivine and chromite suggests that Cr in chromite originated from olivine, but the significantly reduced ferrous concentration in the glass surrounding chromite indicates the iron was derived from surrounding impact-induced glass. Based on laboratory observations and simulated calculations of energy and lattice mismatch, we propose that chromite crystallized at the interface between troilite and olivine in the impact melts, during which the nanospheres were lifted and transported away from olivine surface and formed a mushroom-shaped structure. This finding suggests that oriented attachment growth, chiefly confined to homogeneous systems thus far, can also occur in heterogeneous systems far from equilibrium, such as that produced by the impacts. It is conceivable that the studied crystallization pathway occurring on the heterogeneous interfaces may have been a common mineralization mode at highly nonequilibrium conditions. |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:001399027400003 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/82561]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | He, Hongping |
| 作者单位 | 1.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin 300072, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xi, Jiaxin,Yang, Yiping,He, Hongping,et al. Mushroom-shaped growth of crystals on the Moon[J]. AMERICAN MINERALOGIST,2025,110(1):171-180. |
| APA | Xi, Jiaxin.,Yang, Yiping.,He, Hongping.,Xian, Haiyang.,Li, Shan.,...&Teng, H. Henry.(2025).Mushroom-shaped growth of crystals on the Moon.AMERICAN MINERALOGIST,110(1),171-180. |
| MLA | Xi, Jiaxin,et al."Mushroom-shaped growth of crystals on the Moon".AMERICAN MINERALOGIST 110.1(2025):171-180. |
入库方式： OAI收割
来源：广州地球化学研究所
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