{"title":"Concerning Tetrahedrites: How Much to Lump and How Far to Split?","authors":"","doi":"10.2138/am-2022-8923","DOIUrl":"https://doi.org/10.2138/am-2022-8923","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43177624","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":"Ilmenite phase transformations in suevite from the Ries impact structure (Germany) record evolution in pressure, temperature, and oxygen fugacity conditions","authors":"","doi":"10.2138/am-2023-8985","DOIUrl":"https://doi.org/10.2138/am-2023-8985","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41482944","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}
Sergey Isaenko, Tatyana Shumilova, Vladimir Bocharov, Vasily Ulyashev
9 There is an extensive range of carbon substances with poorly ordered structures that are not 10 well understood. Yet they are important as indicators of conditions of related geological 11 processes. The carbon minerals include nanocrystalline graphite, natural analogues of glass-like 12 carbon (GLC) – shungite and impact ultrahigh-pressure GLC, recently discovered 13 ultranocrystalline diamond, as well as natural carbon nanocomposites of diamond, lonsdaleite 14 and graphite. Studying these natural carbon substances using a standard Raman approach with 15 excitation by visible radiation may lead to a significant distortion of the understanding of their 16 phase states. This paper presents in detail for the first time the spectral features of natural, poorly 17 ordered and multiphase sp 2 -sp 3 carbon composites by multi–wave Raman spectroscopy using 18 laser excitations from visible to ultraviolet light applied to natural low-ordered carbon substances 19 - nanocrystalline graphite and shungite, nanocrystalline and ultranocrystalline diamond, and 20 multiphase carbon aggregates. The carbon state resolution advantages of ultraviolet Raman 21 spectroscopy for phase analysis of nanostructured and poorly ordered polycomponent carbon 22
{"title":"Multi-wavelength Raman spectroscopy of natural nanostructured carbons","authors":"Sergey Isaenko, Tatyana Shumilova, Vladimir Bocharov, Vasily Ulyashev","doi":"10.2138/am-2022-8912","DOIUrl":"https://doi.org/10.2138/am-2022-8912","url":null,"abstract":"9 There is an extensive range of carbon substances with poorly ordered structures that are not 10 well understood. Yet they are important as indicators of conditions of related geological 11 processes. The carbon minerals include nanocrystalline graphite, natural analogues of glass-like 12 carbon (GLC) – shungite and impact ultrahigh-pressure GLC, recently discovered 13 ultranocrystalline diamond, as well as natural carbon nanocomposites of diamond, lonsdaleite 14 and graphite. Studying these natural carbon substances using a standard Raman approach with 15 excitation by visible radiation may lead to a significant distortion of the understanding of their 16 phase states. This paper presents in detail for the first time the spectral features of natural, poorly 17 ordered and multiphase sp 2 -sp 3 carbon composites by multi–wave Raman spectroscopy using 18 laser excitations from visible to ultraviolet light applied to natural low-ordered carbon substances 19 - nanocrystalline graphite and shungite, nanocrystalline and ultranocrystalline diamond, and 20 multiphase carbon aggregates. The carbon state resolution advantages of ultraviolet Raman 21 spectroscopy for phase analysis of nanostructured and poorly ordered polycomponent carbon 22","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46966000","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":"Evolution of layering in a migmatite sample: implications for the petrogenesis of multidomain monazite and zircon","authors":"","doi":"10.2138/am-2022-8679","DOIUrl":"https://doi.org/10.2138/am-2022-8679","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42215904","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}
Ziming Hu, Lidong Dai, Haiying Hu, W. Sun, Mengqi Wang, 4. Chenxin, Jing, Chuanyu Yin, Song Luo, Jinhua Lai
{"title":"Influence of anisotropy on the electrical conductivity of apatite at high temperatures and high pressures","authors":"Ziming Hu, Lidong Dai, Haiying Hu, W. Sun, Mengqi Wang, 4. Chenxin, Jing, Chuanyu Yin, Song Luo, Jinhua Lai","doi":"10.2138/am-2022-8900","DOIUrl":"https://doi.org/10.2138/am-2022-8900","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43782637","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}
L. A. U. E. -. Hiele, A. L. B. W. Oodland, N. O. M. Iyajima, T. I. B. O. B. Allaran, E. D. A. Lig, L. O. F. Ink
ABSTRACT
摘要
{"title":"High-P-T phase relations of Al-bearing magnetite: Post-spinel phases as indicators for P-T conditions of formation of natural samples","authors":"L. A. U. E. -. Hiele, A. L. B. W. Oodland, N. O. M. Iyajima, T. I. B. O. B. Allaran, E. D. A. Lig, L. O. F. Ink","doi":"10.2138/am-2023-8948","DOIUrl":"https://doi.org/10.2138/am-2023-8948","url":null,"abstract":"ABSTRACT","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45366265","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 space-time architecture variation of the shallow magmatic plumbing systems feeding the Campi Flegrei and Ischia volcanoes (Southern Italy) from halogen constraints","authors":"","doi":"10.2138/am-2022-8883","DOIUrl":"https://doi.org/10.2138/am-2022-8883","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49620698","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}
Emanuela Gennaro, G. Iezzi, M. Nazzari, F. Vetere, P. Scarlato, Letizia Giuliani, Georg F. Zellmer
ABSTRACT
摘要
{"title":"The kinetic effect induced by variable cooling rate on the crystal-chemistry of spinel in basaltic systems revealed by EPMA mapping","authors":"Emanuela Gennaro, G. Iezzi, M. Nazzari, F. Vetere, P. Scarlato, Letizia Giuliani, Georg F. Zellmer","doi":"10.2138/am-2023-9014","DOIUrl":"https://doi.org/10.2138/am-2023-9014","url":null,"abstract":"ABSTRACT","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43068205","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":"Mineral and crystal chemical study of pseudo-C2/m non-metamict chevkinite-(Ce): an investigation into the intracrystalline distribution of LREE, HREE, and octahedral cations in samples from the Azores and Pakistan","authors":"","doi":"10.2138/am-2022-8658","DOIUrl":"https://doi.org/10.2138/am-2022-8658","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47525657","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":"Hydrogen incorporation mechanism in the lower-mantle bridgmanite","authors":"","doi":"10.2138/am-2022-8680","DOIUrl":"https://doi.org/10.2138/am-2022-8680","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46716168","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}
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