Mineralogy and Magnetic Behavior of Yellow to Red Xuanhua-Type Agate and Its Indication to the Forming Condition
文献类型：期刊论文
| 作者 | Zhou, Danyi1,3; Shi, Guanghai1; Liu, Suzhen2; Wu, Bailing2 |
| 刊名 | MINERALS
 |
| 出版日期 | 2021-08-01 |
| 卷号 | 11期号:8页码:12 |
| 关键词 | magnetic behavior yellow goethite red hematite Xuanhua agate formation mineralogy |
| DOI | 10.3390/min11080877 |
| 英文摘要 | Iron oxides/hydroxides are important magnetic minerals to provide information about changes in the forming environment. However, the magnetic behavior in agate has been rarely investigated. In this study, the magnetic behavior of the Xuanhua-type agate with intense yellow to red colors from the Xuanhua District (China) was investigated by temperature dependence of magnetic susceptibility, hysteresis loop, isothermal remanent magnetization and the analysis of remanent coercivity components from the gradient acquisition plot. Yellow goethite and red hematite can be quantitatively identified by XRD and Raman spectroscopy due to their relatively higher content. Results showed that the red, yellow and orange Xuanhua-type agate had different magnetic behavior, and magnetite existed in the yellow and orange ones. Fluid inclusions in such agate had the homogenization temperature of similar to 168 degrees C to 264 degrees C. All results suggested that the dehydration of goethite to form hematite was the main reason for the high remnant coercivity (above 1000 mT) of hematite in the red agate. The co-existence of magnetite and goethite in the yellow and orange agate reflects the transformation from Fe2+ to Fe3+, indicating the change in the redox property of the environment. Unique patterns mainly formed by hematite and goethite make it a popular gem-material with high research value. |
| WOS关键词 | NATURAL GOETHITE ; ENVIRONMENTAL MAGNETISM ; TEMPERATURE ; HYSTERESIS ; COERCIVITY ; COMPONENTS ; ORIGIN ; ROCKS ; FIELD |
| 资助项目 | National Science Foundation of China[41688103] ; Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0802] ; NGTC Scientific Research Fund[NGTC2019028] |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000689370400001 |
| 资助机构 | National Science Foundation of China ; National Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; NGTC Scientific Research Fund ; NGTC Scientific Research Fund ; National Science Foundation of China ; National Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; NGTC Scientific Research Fund ; NGTC Scientific Research Fund ; National Science Foundation of China ; National Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; NGTC Scientific Research Fund ; NGTC Scientific Research Fund ; National Science Foundation of China ; National Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; NGTC Scientific Research Fund ; NGTC Scientific Research Fund |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102596]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Shi, Guanghai |
| 作者单位 | 1.China Univ Geosci, State Key Lab Geol Proc & Mineral Resource, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Minist Nat Resources, Beijing Inst Gemol, Natl Gems & Jewelry Technol Adm Ctr, Beijing 100013, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Danyi,Shi, Guanghai,Liu, Suzhen,et al. Mineralogy and Magnetic Behavior of Yellow to Red Xuanhua-Type Agate and Its Indication to the Forming Condition[J]. MINERALS,2021,11(8):12. |
| APA | Zhou, Danyi,Shi, Guanghai,Liu, Suzhen,&Wu, Bailing.(2021).Mineralogy and Magnetic Behavior of Yellow to Red Xuanhua-Type Agate and Its Indication to the Forming Condition.MINERALS,11(8),12. |
| MLA | Zhou, Danyi,et al."Mineralogy and Magnetic Behavior of Yellow to Red Xuanhua-Type Agate and Its Indication to the Forming Condition".MINERALS 11.8(2021):12. |
入库方式： OAI收割
来源：地质与地球物理研究所
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