{"title":"Waipouaite, Ca3(V4+4.5V5+ 0.5)O9[(Si2O5(OH)2][Si3O7.5(OH)1.5]·11H2O, a new polyoxovanadate mineral from the Aranga Quarry, New Zealand","authors":"","doi":"10.2138/am-2023-9048","DOIUrl":"https://doi.org/10.2138/am-2023-9048","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48674263","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":"Characterizing Basalt-Atmosphere Interactions on Venus: A Review of Thermodynamic and Experimental Results","authors":"","doi":"10.2138/am-2023-9015","DOIUrl":"https://doi.org/10.2138/am-2023-9015","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45863975","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":"Don Juan Basin, Antarctica: A Chemically-Altering Environment with Martian Analog Potential","authors":"","doi":"10.2138/am-2022-8779","DOIUrl":"https://doi.org/10.2138/am-2022-8779","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44911080","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":"Scandio-winchite, ideally □(NaCa)(Mg4Sc)(Si8O22)(OH)2, the first Sc-dominant amphibole supergroup mineral from Jordanów Śląski, Lower Silesia, southwestern Poland: description and crystal structure","authors":"","doi":"10.2138/am-2023-8974","DOIUrl":"https://doi.org/10.2138/am-2023-8974","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46920270","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":"Correlation between Si-Al disorder and hydrogen-bonding distance variation in ussingite (Na2AlSi3O8OH) revealed by one- and two-dimensional multi-nuclear NMR and first-principles calculation","authors":"","doi":"10.2138/am-2023-9008","DOIUrl":"https://doi.org/10.2138/am-2023-9008","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48678404","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":"Tourmaline Growth in the Border and Wall Zones of the Emmons Pegmatite (Maine, Usa): Evidence for Disequilibrium Crystallization and Boundary Layer Formation","authors":"","doi":"10.2138/am-2023-8991","DOIUrl":"https://doi.org/10.2138/am-2023-8991","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45653634","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}
22 The accurate textural characterization of mantle xenoliths is one of the fundamental steps to 23 understanding the main processes occurring in the upper mantle, such as sub-solidus 24 recrystallization, magmatic crystallization and metasomatism. Texture, composition, and 25 mineralogy reflect the temperature, pressure, stress conditions, melting and/or contamination events 26 undergone before and during the entrapment in the host magma. For these reasons, characterizing 27 the three-dimensional (3D) texture of silicate, oxide, sulfide and glass phases has great importance 28 in the study of mantle xenoliths. We performed a multi-scale and multi-modal 3D textural analysis 29 based on X-ray computed microtomography (μ-CT) data of three mantle xenoliths from different 30 geodynamic settings (i.e. mobile belt zone, pericraton, oceanic hotspot). The samples were selected 31 to represent different, variably complex, internal structures, composed of grains of different phases, 32 fractures, voids and fluid inclusions of different sizes. We used an approach structured in increasing 33 steps of spatial and contrast resolution, starting with in-house X-ray μ-CT imaging (working at 34 spatial resolution from 30 μm down to 6.25 μm) and moving to high-resolution synchrotron X-ray 35 μ-CT at the micron scale. 36 We performed a 3D characterization of mantle xenoliths comparing the results with the analysis of 37 conventional 2D images (thin sections) obtained by optical microscopy and simulating the random 38
{"title":"Multi-scale and multi-modal imaging study of mantle xenoliths and petrological implications","authors":"M. Venier, L. Ziberna, G. Roncoroni, A. Demin","doi":"10.2138/am-2022-8866","DOIUrl":"https://doi.org/10.2138/am-2022-8866","url":null,"abstract":"22 The accurate textural characterization of mantle xenoliths is one of the fundamental steps to 23 understanding the main processes occurring in the upper mantle, such as sub-solidus 24 recrystallization, magmatic crystallization and metasomatism. Texture, composition, and 25 mineralogy reflect the temperature, pressure, stress conditions, melting and/or contamination events 26 undergone before and during the entrapment in the host magma. For these reasons, characterizing 27 the three-dimensional (3D) texture of silicate, oxide, sulfide and glass phases has great importance 28 in the study of mantle xenoliths. We performed a multi-scale and multi-modal 3D textural analysis 29 based on X-ray computed microtomography (μ-CT) data of three mantle xenoliths from different 30 geodynamic settings (i.e. mobile belt zone, pericraton, oceanic hotspot). The samples were selected 31 to represent different, variably complex, internal structures, composed of grains of different phases, 32 fractures, voids and fluid inclusions of different sizes. We used an approach structured in increasing 33 steps of spatial and contrast resolution, starting with in-house X-ray μ-CT imaging (working at 34 spatial resolution from 30 μm down to 6.25 μm) and moving to high-resolution synchrotron X-ray 35 μ-CT at the micron scale. 36 We performed a 3D characterization of mantle xenoliths comparing the results with the analysis of 37 conventional 2D images (thin sections) obtained by optical microscopy and simulating the random 38","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46041460","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}
S. Fu, S. Chariton, Yanyao Zhang, T. Okuchi, V. Prakapenka, Jung‐Fu Lin
12 Here we have performed single-crystal X-ray diffraction (SCXRD) experiments on two high-13 quality crystal platelets of (Al,Fe)-bearing bridgmanite 14 (Mg 0.88 Fe 3+0.065 Fe 2+0.035 Al 0.03 )(Al 0.11 Si 0.90 )O 3 (Fe10-Al14-Bgm) up to 64.6(6) GPa at room 15 temperature in a Boehler-Almax type diamond anvil cell. Refinements on the collected SCXRD 16 patterns reveal reliable structural information of single-crystal Fe10-Al14-Bgm, including unit-17 cell parameters, atomic coordinates, and anisotropic displacement parameters. Together with 18 Mössbauer and electron microprobe analyses, our best single-crystal refinement model indicates 19 that our sample contains ~6.5 mol% Fe 3+ , 3.5 mol% Fe 2+ , and 3 mol% Al 3+ in the large pseudo-20 dodecahedral site (A site), and ~11 mol% Al 3+ in the small octahedral site (B site). This may 21 indicate that Al 3+ in bridgmanite preferentially occupies the B site. Our results show
在这里，我们在boeler - almax型金刚石砧池中对两个高质量的(Al,Fe)含桥菱石14 (Mg 0.88 Fe 3+0.065 Fe 2+0.035 Al 0.03)(Al 0.11 Si 0.90)O 3 (Fe10-Al14-Bgm)晶体片进行了单晶x射线衍射(SCXRD)实验，室温为64.6(6)GPa。对收集到的SCXRD - 16图谱进行细化，得到了单晶Fe10-Al14-Bgm的可靠结构信息，包括单元-17胞参数、原子坐标和各向异性位移参数。结合Mössbauer和电子探针分析，我们的最佳单晶精化模型表明我们的样品在大的伪十二面体位点(A位)含有~6.5 mol% fe3 +， 3.5 mol% fe2 +和3 mol% Al 3+，在小的八面体位点(B位)含有~11 mol% Al 3+。这可能表明铝3+在桥菱石中优先占据B位。我们的结果显示
{"title":"Single-Crystal X-ray Diffraction on the Structure of (Al,Fe)-bearing Bridgmanite in the Lower Mantle","authors":"S. Fu, S. Chariton, Yanyao Zhang, T. Okuchi, V. Prakapenka, Jung‐Fu Lin","doi":"10.2138/am-2023-8969","DOIUrl":"https://doi.org/10.2138/am-2023-8969","url":null,"abstract":"12 Here we have performed single-crystal X-ray diffraction (SCXRD) experiments on two high-13 quality crystal platelets of (Al,Fe)-bearing bridgmanite 14 (Mg 0.88 Fe 3+0.065 Fe 2+0.035 Al 0.03 )(Al 0.11 Si 0.90 )O 3 (Fe10-Al14-Bgm) up to 64.6(6) GPa at room 15 temperature in a Boehler-Almax type diamond anvil cell. Refinements on the collected SCXRD 16 patterns reveal reliable structural information of single-crystal Fe10-Al14-Bgm, including unit-17 cell parameters, atomic coordinates, and anisotropic displacement parameters. Together with 18 Mössbauer and electron microprobe analyses, our best single-crystal refinement model indicates 19 that our sample contains ~6.5 mol% Fe 3+ , 3.5 mol% Fe 2+ , and 3 mol% Al 3+ in the large pseudo-20 dodecahedral site (A site), and ~11 mol% Al 3+ in the small octahedral site (B site). This may 21 indicate that Al 3+ in bridgmanite preferentially occupies the B site. Our results show","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44229033","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":"Geochemical discrimination of pyrite in diverse ore deposit types through statistical analysis and machine learning techniques","authors":"","doi":"10.2138/am-2023-8976","DOIUrl":"https://doi.org/10.2138/am-2023-8976","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":" ","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44070598","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":"Memorial of Maryellen Cameron (1943−2022)","authors":"Kevin D. Crowle, W. Bagby, John M. Hughes","doi":"10.2138/am-2023-M1017","DOIUrl":"https://doi.org/10.2138/am-2023-M1017","url":null,"abstract":"","PeriodicalId":7768,"journal":{"name":"American Mineralogist","volume":"108 1","pages":"1569 - 1570"},"PeriodicalIF":3.1,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41806010","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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