Journal of Geosciences最新文献

{"title":"Chemical composition of tourmalines from the Manjaka pegmatite and its exocontact, Sahatany Valley, Madagascar","authors":"P. Gadas, M. Novák, M. Vašinová Galiová, F. Pezzotta","doi":"10.3190/jgeosci.374","DOIUrl":"https://doi.org/10.3190/jgeosci.374","url":null,"abstract":"","PeriodicalId":15957,"journal":{"name":"Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139005008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single-crystal structure refinement of bukovite, (Cu3Fe)Σ4Tl2Se4","authors":"J. Sejkora, D. Mauro, C. Biagioni","doi":"10.3190/jgeosci.373","DOIUrl":"https://doi.org/10.3190/jgeosci.373","url":null,"abstract":"","PeriodicalId":15957,"journal":{"name":"Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139004730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Navrotskyite, K2Na10(UO2)3(SO4)9·2H2O, a new sodium and potassium uranyl-sulfate mineral from the Blue Lizard mine, Red Canyon, White Canyon District, San Juan County, Utah","authors":"T. Olds, A. R. Kampf, S.L. Perry, X. Guo, J. Marty, T.P. Rose, P.C. Burns","doi":"10.3190/jgeosci.378","DOIUrl":"https://doi.org/10.3190/jgeosci.378","url":null,"abstract":"","PeriodicalId":15957,"journal":{"name":"Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139005201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New type of epithermal manganese mineralization from the Banská Hodruša precious and base metal deposit at the Rozália mine, Hodruša- Hámre, Slovakia","authors":"M. Rybárik, M. Števko, P. Koděra, J. Prcúch","doi":"10.3190/jgeosci.376","DOIUrl":"https://doi.org/10.3190/jgeosci.376","url":null,"abstract":"","PeriodicalId":15957,"journal":{"name":"Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139006075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Perthite in nepheline syenite from the kakortokite unit in the Ilímaussaq Complex, south Greenland","authors":"H. K. Schønwandt, G. B. Barnes, T. Ulrich","doi":"10.3190/jgeosci.375","DOIUrl":"https://doi.org/10.3190/jgeosci.375","url":null,"abstract":"","PeriodicalId":15957,"journal":{"name":"Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139005202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deformation pattern of the Lower Triassic sedimentary formations of the Silica Nappe: Evidence for dynamics of the Western Carpathian orogen","authors":"R. Vojtko, A. Lačný, P. Jeřábek, T. Potočný, S. Gerátová, J. Kilík, D. Plašienka, O. Lexa","doi":"10.3190/jgeosci.377","DOIUrl":"https://doi.org/10.3190/jgeosci.377","url":null,"abstract":"","PeriodicalId":15957,"journal":{"name":"Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139005127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of zeolite mineralizations from the high-grade metamorphosed Strážek Unit, Moldanubian Zone, Czech Republic","authors":"M. Novak, J. Toman, R. Škoda, D. Šikola, J. Mazuch","doi":"10.3190/jgeosci.370","DOIUrl":"https://doi.org/10.3190/jgeosci.370","url":null,"abstract":".","PeriodicalId":15957,"journal":{"name":"Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45504560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"WinSpingc, a Windows program for spinel supergroup minerals","authors":"F. Yavuz, Vural Yavuz, P. Bačík","doi":"10.3190/jgeosci.369","DOIUrl":"https://doi.org/10.3190/jgeosci.369","url":null,"abstract":"A Microsoft ® Visual Basic software, called WinSpingc, has been developed to calculate and classify wet chemical and electron-microprobe spinel supergroup mineral analyses based on the New Minerals, Nomenclature and Classification (CNMMN) of the International Mineralogical Association (IMA–19) nomenclature scheme. The program evaluates the 60 approved species according to the dominant valance and constituents in the general AB 2 X 4 formula for the spinel, ulvöspinel, carrollite, linnaeite, tyrellite and bornhardtite subgroups that belong to the oxyspinel, thiospinel and selenospinel groups. Mineral analyses of the oxyspinel group are calculated based on 3 cations and 4 oxygen atoms per formula unit, whereas the formulae of thiospinel and selenospinel analyses are on the basis of 7 atoms per formula unit. Employing the anions of spinel supergroup mineral analyses, the program first assigns three groups on the basis of dominant X anion, including O 2– , S 2– and Se 2– , determines subgroups according to the cation charge arrangement combinations and then defines the spinel species in each subgroup based on the dominant valance and constituents. The Fe 3+ and Fe 2+ , as well as the Mn 3+ , Mn 2+ , Co 3+ and Co 2+ contents from microprobe-derived total FeO, MnO and CoO (wt. %) amounts, are estimated by stoichiometric constraints. WinSpingc allows the users to enter total 57 input variables for groups as well as to type and load the multiple spinel supergroup compositions in the data entry section, to edit and load the Microsoft ® Excel files in calculating, classifying and naming the spinel species, and to store all the calculated parameters in the Microsoft ® Excel file for further evaluations. The program is distributed as a self-extracting setup file, including the necessary support files used by the program, a help file, and representative sample data files.","PeriodicalId":15957,"journal":{"name":"Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48874882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mineralogical and geochemical studies of Cu-Bi-Ag±W ores from Janjevo (Kosovo): Insights into the Bi sulfosalt mineralogy and the distribution of bismuth in base metal sulfides","authors":"Sławomir Mederski, J. Pršek, Joanna Kołodziejczyk, Konrad Kluza, V. Melfos, K. Adamek, D. Dimitrova","doi":"10.3190/jgeosci.371","DOIUrl":"https://doi.org/10.3190/jgeosci.371","url":null,"abstract":"This work presents a mineralogical and geochemical study of Cu–Bi–Ag ± W ores from Janjevo in the Trepça Mineral Belt in Kosovo. This locality indicates a new type of Bi–Cu ± Au mineralization within the Kizhnica–Hajvalia–Badovc ore field, including Cu–Bi ± Ag ± As sulfosalts paragenesis previously not described in Kosovo and in this part of the Vardar Zone. Chemical composition of Bi– Pb ± Cu ±Ag and Cu – Bi ± Ag ± As sulfosalts, sulfides, and associated miner - als, as well as their paragenetic relationships and the distribution of minor and trace elements in main ore minerals, are discussed based on microscopy, microprobe, and laser ablation inductively coupled plasma mass spectrometry studies. The Cu–Bi– Ag ± W hydrothermal mineralization in Janjevo was formed during four stages: (1) Early base metal stage, (2) Bismuth stage, (3) Main stage, and (4) Late stage. The Early base metal stage is represented by pyrite, sphalerite I, chalcopyrite I, galena I, bournonite I, tetrahedrite I, siderite, and quartz. The Bismuth stage includes arsenopyrite I, löllingite, native bismuth, galena II, chalcopyrite II, tetrahedrite II, quartz, siderite, and Bi – Pb ± Cu ± Ag sulfosalts: bismuthinite, aikinite, krupkaite, cosalite, and gustavite. The Main stage is represented by chalcopyrite III, tetrahedrite group minerals (tetrahedrite and tennantite) III, galena III, sphalerite II, arsenopyrite II, bournonite II, and siderite. The Cu– Bi ± Ag ± As sulfosalts (pearceite, cupropearceite, wittichenite, and an unknown phase: AgCuBiS 3 ) associated with galena IV, siderite, and quartz were formed in the final low-temperature Late stage. The application of GGIMFis geothermometry on sphalerite gives the following sphalerite precipitation temperatures: 220–272 °C for sphalerite I and 160–190 °C for sphalerite II. Presented results show that in addition to numerous Bi sulfosalts in Janjevo Cu –Bi–Ag ± W ores, bismuth has been incorporated into base metal sulfides, as well as arsenopyrite. The main carrier of bismuth is arsenopyrite I, which has started the crystallization of the bismuth stage.","PeriodicalId":15957,"journal":{"name":"Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49166762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 crystal structure of magnesian halotrichite, (Fe,Mg)Al2(SO4)4·22H2O: hydrogen bonding, geometrical parameters and structural complexity","authors":"E. Zhitova, R. M. Sheveleva, A. Zolotarev, S. Krivovichev, V. Shilovskikh, A. Nuzhdaev, M. Nazarova","doi":"10.3190/jgeosci.372","DOIUrl":"https://doi.org/10.3190/jgeosci.372","url":null,"abstract":"The crystal structure of magnesian halotrichite has been refined for two samples collected as white efflorescences from the surface of geothermal fields associated with the Koshelevsky (sample VK4-09 ) and Centralny Semyachik (sample SC2-20 ) volcanoes (both Kamchatka peninsula, Russia). Halotrichite and its Mg-rich varieties are common products of the acid leaching of rocks, both volcanic and technogenic. The crystal structures of two halotrichite crystals were refined in the P 2 1 / n space group ( vs. P 2 1 / c used previously) with the unit-cell parameters a = 6.1947(2)/ 6.1963(5) Å, b = 24.2966(8)/ 24.2821(14) Å, c = 21.0593(8)/ 21.063(2) Å, β = 96.512(4)/ 96.563(9) º, V = 3149.2(2)/ 3148.3(5) Å 3 , Z = 4 to R 1 = 0.055 and 0.067 for 5673 and 3936 reflections with I > 2σ I reflections, respectively. The crystal structure consists of isolated Al(H 2 O) 6 octahedra, SO 4 tetrahedra, H 2 O molecules and [ X (SO 4 )(H 2 O) 5 ] 0 clusters ( X = Fe, Mg). The chemical analyses of both samples show their enrichment of Mg at the Fe 2+ site. The analysis of geometrical parameters of the crystal structures of halotrichite and its Mg-analogue pickeringite suggests that the localization of O atoms carried out in this work is more accurate and the single-crystal X-ray diffraction data for the first time allowed localization of hydrogen atom positions. The refined number of H 2 O molecules agrees with the ideal chemical formula. The crystal structure complexity of halotrichite is estimated as I G,total = 2305 bits/cell, which belongs to the family of very complex mineral structures. The contribution of hydrogen bonding system plays a significant role in the overall bonding scheme and the overall complexity of the crystal structure, increasing the Shannon information amount more than twice from I G,total(noH) = 988 bits/cell (no hydrogen atoms) to I G,total = 2305 bits/cell (all atoms including hydrogen). The comparative distribution of halotrichite relative to other Fe-Al hydrated sulfates from the standpoint of structural complexity is considered.","PeriodicalId":15957,"journal":{"name":"Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46290450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}