I. W. Hadlich, A. C. Bastos Neto, V. P. Pereira, N. F. Botelho, L. H. Ronchi, H. G. Dill
{"title":"Mn-Fe-rich genthelvite from pegmatites associated with the Madeira Sn-Nb-Ta deposit (Pitinga, Brazil): new constraints on the magmatic-hydrothermal transition in the albite-enriched granite system","authors":"I. W. Hadlich, A. C. Bastos Neto, V. P. Pereira, N. F. Botelho, L. H. Ronchi, H. G. Dill","doi":"10.1180/mgm.2023.87","DOIUrl":"https://doi.org/10.1180/mgm.2023.87","url":null,"abstract":"","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139779806","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}
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, Stuart J. Mills
{"title":"Newsletter 77","authors":"Ferdinando Bosi, Frédéric Hatert, Marco Pasero, Stuart J. Mills","doi":"10.1180/mgm.2024.5","DOIUrl":"https://doi.org/10.1180/mgm.2024.5","url":null,"abstract":"","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139685617","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}
Oksana V. Udoratina, Taras L. Panikorovskii, Nikita V. Chukanov, Mikhail V. Voronin, Vladimir P. Lutoev, Atali A. Agakhanov, Sergey I. Isaenko
The new columbite-supergroup mineral dmitryvarlamovite, ideally Ti2(Fe3+Nb)O8, was discovered in weathered alkaline metasomatic assemblages formed after late Riphaean sedimentary carbonate rocks of the Verkhne-Shchugorskoe deposit, Middle Timan Mts., Russia. The associated minerals are columbite-(Fe), pyrochlore-group minerals, monazite-(Ce), xenotime-(Y), baryte, pyrite, drugmanite and plumbogummite. Dmitryvarlamovite occurs as isolated anhedral equant grains up to 0.5 mm across. The colour of dmitryvarlamovite is black, the streak is black and the lustre is submetallic. The new mineral is brittle, with the mean VHN hardness of 753 kg mm–2 corresponding to the Mohs’ hardness of 6. No cleavage is observed. The fracture is conchoidal. The calculated density is 4.891 g⋅cm–3. In reflected light, dmitryvarlamovite is light grey; no pleochroism is observed. The reflectance values (Rmin, % / Rmax, % / λ, nm) are: 19.8/20.3/470, 18.3/18.9/546, 17.8/18.5/589 and 17.3/17.8/650. The chemical composition is (electron microprobe data, with iron divided into Fe2O3 and FeO based on the charge balance, wt.%): MnO 0.11, FeO 1.51, V2O3 0.89, Cr2O3 0.28, Fe2O3 19.26, TiO2 37.72, Nb2O5 40.08, total 99.85. The IR and Raman spectra indicate the absence of H-, C- and N-bearing groups. The empirical formula is (Fe2+0.08V3+0.05Cr3+0.01Fe3+0.92Ti1.79Nb1.15)Σ4.00O8. The crystal structure was determined using single-crystal X-ray diffraction data and refined to R = 0.048. Dmitryvarlamovite is orthorhombic, space group P21212, a = 4.9825(6), b = 4.6268(4), c = 5.5952(6) Å and V = 5.5952(6) Å3 (Z = 1). The structure is related to those of wolframite-group minerals but differs in the scheme of cation ordering. The crystal-chemical formula derived based on the structural data is (Ti0.57Nb0.21Fe3+0.15Fe2+0.04V0.02Cr0.01)2(Nb0.36Ti0.33Fe3+0.31)2O8. The strongest lines of the powder X-ray diffraction pattern [d, Å (I, %) (hkl)] are: 3.58 (40) (011), 2.911 (100) (111), 2.809 (40) (002), 2.497 (38) (020), 2.447 (29) (103), 1.7363 (32) (103) and 1.7047 (29) (220). Dmitryvarlamovite is named after Dmitry Anatol'evich Varlamov (b. 1965).
{"title":"Dmitryvarlamovite, Ti2(Fe3+Nb)O8, a new columbite-supergroup mineral related to the wolframite group","authors":"Oksana V. Udoratina, Taras L. Panikorovskii, Nikita V. Chukanov, Mikhail V. Voronin, Vladimir P. Lutoev, Atali A. Agakhanov, Sergey I. Isaenko","doi":"10.1180/mgm.2023.95","DOIUrl":"https://doi.org/10.1180/mgm.2023.95","url":null,"abstract":"<p>The new columbite-supergroup mineral dmitryvarlamovite, ideally Ti<span>2</span>(Fe<span>3+</span>Nb)O<span>8</span>, was discovered in weathered alkaline metasomatic assemblages formed after late Riphaean sedimentary carbonate rocks of the Verkhne-Shchugorskoe deposit, Middle Timan Mts., Russia. The associated minerals are columbite-(Fe), pyrochlore-group minerals, monazite-(Ce), xenotime-(Y), baryte, pyrite, drugmanite and plumbogummite. Dmitryvarlamovite occurs as isolated anhedral equant grains up to 0.5 mm across. The colour of dmitryvarlamovite is black, the streak is black and the lustre is submetallic. The new mineral is brittle, with the mean VHN hardness of 753 kg mm<span>–2</span> corresponding to the Mohs’ hardness of 6. No cleavage is observed. The fracture is conchoidal. The calculated density is 4.891 g⋅cm<span>–3</span>. In reflected light, dmitryvarlamovite is light grey; no pleochroism is observed. The reflectance values (<span>R</span><span>min</span>, % / <span>R</span><span>max</span>, % / λ, nm) are: 19.8/20.3/470, 18.3/18.9/546, 17.8/18.5/589 and 17.3/17.8/650. The chemical composition is (electron microprobe data, with iron divided into Fe<span>2</span>O<span>3</span> and FeO based on the charge balance, wt.%): MnO 0.11, FeO 1.51, V<span>2</span>O<span>3</span> 0.89, Cr<span>2</span>O<span>3</span> 0.28, Fe<span>2</span>O<span>3</span> 19.26, TiO<span>2</span> 37.72, Nb<span>2</span>O<span>5</span> 40.08, total 99.85. The IR and Raman spectra indicate the absence of H-, C- and N-bearing groups. The empirical formula is (Fe<span>2+</span><span>0.08</span>V<span>3+</span><span>0.05</span>Cr<span>3+</span><span>0.01</span>Fe<span>3+</span><span>0.92</span>Ti<span>1.79</span>Nb<span>1.15</span>)<span>Σ4.00</span>O<span>8</span>. The crystal structure was determined using single-crystal X-ray diffraction data and refined to <span>R</span> = 0.048. Dmitryvarlamovite is orthorhombic, space group <span>P</span>2<span>1</span>2<span>1</span>2, <span>a</span> = 4.9825(6), <span>b</span> = 4.6268(4), <span>c</span> = 5.5952(6) Å and <span>V</span> = 5.5952(6) Å<span>3</span> (<span>Z</span> = 1). The structure is related to those of wolframite-group minerals but differs in the scheme of cation ordering. The crystal-chemical formula derived based on the structural data is (Ti<span>0.57</span>Nb<span>0.21</span>Fe<span>3+</span><span>0.15</span>Fe<span>2+</span><span>0.04</span>V<span>0.02</span>Cr<span>0.01</span>)<span>2</span>(Nb<span>0.36</span>Ti<span>0.33</span>Fe<span>3+</span><span>0.31</span>)<span>2</span>O<span>8</span>. The strongest lines of the powder X-ray diffraction pattern [<span>d</span>, Å (<span>I</span>, %) (<span>hkl</span>)] are: 3.58 (40) (011), 2.911 (100) (111), 2.809 (40) (002), 2.497 (38) (020), 2.447 (29) (103), 1.7363 (32) (103) and 1.7047 (29) (220). Dmitryvarlamovite is named after Dmitry Anatol'evich Varlamov (b. 1965).</p>","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139771176","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}
Fabrizio Vergani, Marilena Moroni, Paolo Gentile, G. Gatta
{"title":"The base metal sulfide and Ni-Co arsenide-bearing veins of Valsassina (Lombardy, Italy): a preliminary study","authors":"Fabrizio Vergani, Marilena Moroni, Paolo Gentile, G. Gatta","doi":"10.1180/mgm.2024.3","DOIUrl":"https://doi.org/10.1180/mgm.2024.3","url":null,"abstract":"","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139609383","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":"Naalasite, NaAl(AsO3OH)2⋅H2O, the Al analogue of nafeasite from the Torrecillas mine, Iquique Province, Chile","authors":"A. R. Kampf, G. Möhn, Chi Ma, Joy Désor","doi":"10.1180/mgm.2023.96","DOIUrl":"https://doi.org/10.1180/mgm.2023.96","url":null,"abstract":"","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139608648","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":"Plumboperloffite, PbMn2+2Fe3+2(PO4)3(OH)3, a new member of the bjarebyite group from Wiperaminga Hill, South Australia, Australia","authors":"P. Elliott, A. R. Kampf","doi":"10.1180/mgm.2023.97","DOIUrl":"https://doi.org/10.1180/mgm.2023.97","url":null,"abstract":"","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139525073","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}
Bin Wu, Xiangping Gu, Xin Gui, Christophe Bonnetti, C. Rao, Rucheng Wang, Jianjun Wan, Wenlei Song
{"title":"Plumbogaidonnayite, PbZrSi3O9⋅2H2O, a new Pb-member of the gaidonnayite group from the Saima alkaline complex, Liaoning Province, China","authors":"Bin Wu, Xiangping Gu, Xin Gui, Christophe Bonnetti, C. Rao, Rucheng Wang, Jianjun Wan, Wenlei Song","doi":"10.1180/mgm.2024.2","DOIUrl":"https://doi.org/10.1180/mgm.2024.2","url":null,"abstract":"","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139525939","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}
Inna Lykova, R. Rowe, G. Poirier, Henrik Friis, Stephanie Barnes
{"title":"Natromelansonite, Na3Zr[Si7AlO19]⋅4-5H2O, a new member of the rhodesite mero-plesiotype series from Mont Saint-Hilaire, Quebec, Canada","authors":"Inna Lykova, R. Rowe, G. Poirier, Henrik Friis, Stephanie Barnes","doi":"10.1180/mgm.2024.1","DOIUrl":"https://doi.org/10.1180/mgm.2024.1","url":null,"abstract":"","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139529266","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}
A. Pieczka, Roy Kristiansen, Marcin Stachowicz, M. Dumańska‐Słowik, B. Gołębiowska, M. Sęk, K. Nejbert, Jakub Kotowski, Beata Marciniak-Maliszewska, A. Szuszkiewicz, E. Szełęg, Krzysztof Woźniak
{"title":"Heflikite, ideally Ca2(Al2Sc)(Si2O7)(SiO4)O(OH), the first scandium epidote-supergroup mineral from Jordanów Śląski, Lower Silesia (Poland) and from Heftetjern, Tørdal (Norway)","authors":"A. Pieczka, Roy Kristiansen, Marcin Stachowicz, M. Dumańska‐Słowik, B. Gołębiowska, M. Sęk, K. Nejbert, Jakub Kotowski, Beata Marciniak-Maliszewska, A. Szuszkiewicz, E. Szełęg, Krzysztof Woźniak","doi":"10.1180/mgm.2023.98","DOIUrl":"https://doi.org/10.1180/mgm.2023.98","url":null,"abstract":"","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139531488","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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