{"title":"On “Reexamination of the structure of opal-A: A combined study of synchrotron X-ray diffraction and pair distribution function analysis”—Reply to de Jong","authors":"Seungyeol Lee, Huifang Xu, Hongwu Xu","doi":"10.2138/am-2023-9216","DOIUrl":"https://doi.org/10.2138/am-2023-9216","url":null,"abstract":"We appreciate the interest from de Jong (2024, this issue) in our study on the structure of opal-A using synchrotron X-ray diffraction (XRD) and pair distribution function (PDF) analysis (Lee et al. 2022). Several comments were made by de Jong (2024) on the strengths and weaknesses of PDF analysis, the existence of 4- and 8-membered silica rings in the opal-A structure, and the usefulness of opal phase transitions as stratigraphic markers. Here, we shall address these comments in turn.X-ray PDF analysis is one of the main techniques employed in Lee et al. (2022), and it...","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":"3 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139668381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comment on “Reexamination of the structure of opal-A: A combined study of synchrotron X-ray diffraction and pair distribution function analysis”—Concerning opal","authors":"B.H.W.S. de Jong","doi":"10.2138/am-2022-8863","DOIUrl":"https://doi.org/10.2138/am-2022-8863","url":null,"abstract":"The paper by Lee et al. (2022) touches on various issues of amorphous silicas. In this comment, I shall discuss them, aiming at the metric of amorphous solids in structure property relationships. These were initiated in a pioneering study in 1874 by le Bell followed by van‘t Hoff (Ramberg 2017), who showed optical activity in organic systems to be a consequence of a postulated edge or face sharing of tetrahedral carbon atoms. It was followed up by the Drude-Lorentz 1916 electron gas theory (cf. Ladd 1993) to account for transport properties of metals and, after Laue’s discovery...","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":"22 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139668677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The effect of a-site cations on charge-carrier mobility in FE-Rich amphiboles","authors":"","doi":"10.2138/am-2023-9138","DOIUrl":"https://doi.org/10.2138/am-2023-9138","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":"43 7","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139127004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dominik C. Hezel, Heidi E. Höfer, Andreas Fichtner
{"title":"A fast open data reduction workflow for the electron microprobe flank method to determine Fe3+/ΣFe contents in minerals","authors":"Dominik C. Hezel, Heidi E. Höfer, Andreas Fichtner","doi":"10.2138/am-2023-9112","DOIUrl":"https://doi.org/10.2138/am-2023-9112","url":null,"abstract":"Abstract","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":"30 40","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139129210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shanke Liu, Wenjun Li, Benxun Su, Qiqi Pan, Meng Yuan, P. Sakyi
{"title":"K isotopic fractionation in K-feldspar: Effects of mineral chemistry","authors":"Shanke Liu, Wenjun Li, Benxun Su, Qiqi Pan, Meng Yuan, P. Sakyi","doi":"10.2138/am-2023-9006","DOIUrl":"https://doi.org/10.2138/am-2023-9006","url":null,"abstract":"20 Controlling factors of potassium (K) isotopic fractionation in K-feldspar remain poorly 21 constrained. In this study, we analyzed the K isotopic compositions of eleven K-feldspar samples 22","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":"66 20","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139127293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Systematic study of high field strength elements during liquid immiscibility between carbonatitic melt and silicate melt","authors":"Wanzhu Zhang, Shuo Xue, Ming-Xing Ling, Xing Ding","doi":"10.2138/am-2023-9093","DOIUrl":"https://doi.org/10.2138/am-2023-9093","url":null,"abstract":"ABSTRACT","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":"61 4","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139128849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Molybdenum isotopic fractionation in the Panzhihua mafic layered intrusion in the Emeishan large igneous province, southwest China","authors":"","doi":"10.2138/am-2023-9154","DOIUrl":"https://doi.org/10.2138/am-2023-9154","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":"65 4","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139128830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Miaohong He, W. Deng, Xuefei Chen, Yanqiang Zhang, Gangjian Wei
{"title":"Biological control of ultra-skeleton mineralization in coral","authors":"Miaohong He, W. Deng, Xuefei Chen, Yanqiang Zhang, Gangjian Wei","doi":"10.2138/am-2023-9134","DOIUrl":"https://doi.org/10.2138/am-2023-9134","url":null,"abstract":"Abstract","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":"133 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139395343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}