Mineralogical Magazine最新文献

{"title":"The oxidation state and distribution of Fe in pumpellyite from the Northern Chichibu Belt in the Hijikawa district, western Shikoku, Japan","authors":"Masahide Akasaka, Yumi Goishi (Imaizumi), Masayuki Sakakibara, Yoshihiro Nakamuta","doi":"10.1180/mgm.2023.80","DOIUrl":"https://doi.org/10.1180/mgm.2023.80","url":null,"abstract":"An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136113196","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":"Okruginite, Cu₂SnSe₃, a new mineral from the Ozernovskoe deposit, Kamchatka peninsula, Russia","authors":"Anna Vymazalová, Vladimir V. Kozlov, František Laufek, Chris J. Stanley, Ilya A. Shkilev, Sharapat Kudaeva, Filip Košek","doi":"10.1180/mgm.2023.78","DOIUrl":"https://doi.org/10.1180/mgm.2023.78","url":null,"abstract":"An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136113523","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":"Kalyuzhnyite-(Ce), NaKCaSrCeTi(Si8O21)OF(H2O)3, a new mineral from the Darai-Pioz alkaline massif, Tien-Shan mountains, Tajikistan: mineral description, crystal structure and a new double (Si8O21) sheet","authors":"Atali A. Agakhanov, Elena Sokolova, Vladimir Yu. Karpenko, Frank C. Hawthorne, Leonid A. Pautov, Anatoly V. Kasatkin, Igor V. Pekov, Vitaliya A. Agakhanova","doi":"10.1180/mgm.2023.74","DOIUrl":"https://doi.org/10.1180/mgm.2023.74","url":null,"abstract":"<p>Kalyuzhnyite-(Ce), ideally NaKCaSrCeTi(Si<span>8</span>O<span>21</span>)OF(H<span>2</span>O)<span>3</span>, is a new mineral from the Darai-Pioz alkaline massif, Tien-Shan mountains, Tajikistan. It occurs as equant grains up to 0.05 × 0.07 mm in a quartz–pectolite aggregate in a silexite-like peralkaline pegmatite. Associated minerals are quartz, fluorite, pectolite, baratovite, aegirine, leucosphenite, neptunite, reedmergnerite, orlovite, sokolovaite, mendeleevite-(Ce), odigitriaite, pekovite, zeravshanite, kirchhoffite and garmite. The mineral is colourless with a vitreous lustre and a white streak, and <span>D</span><span>calc.</span> is 3.120 g/cm<span>3</span>. Kalyuzhnyite-(Ce) is monoclinic, <span>P</span>2/<span>c</span>, <span>a</span> = 18.647(4), <span>b</span> = 11.214(2), <span>c</span> = 14.642(3) Å, β = 129.55(3)° and <span>V</span> = 2360.9(11) Å<span>3</span>. The chemical composition of kalyuzhnyite-(Ce) is Nb<span>2</span>O<span>5</span> 0.53, TiO<span>2</span> 0.16, SiO<span>2</span> 43.85, Er<span>2</span>O<span>3</span> 0.13, Ho<span>2</span>O<span>3</span> 0.10, Gd<span>2</span>O<span>3</span> 0.09, Sm<span>2</span>O<span>3</span> 0.47, Nd<span>2</span>O<span>3</span> 6.22, Pr<span>2</span>O<span>3</span> 1.21, Ce<span>2</span>O<span>3</span> 6.34, La<span>2</span>O<span>3</span> 0.82, PbO 4.90, BaO 0.85, SrO 11.39, CaO 1.86, Cs<span>2</span>O 3.80, K<span>2</span>O 1.59, Na<span>2</span>O 2.99, H<span>2</span>O 5.24, F 1.55, O = F –0.65, total 100.31 wt.%. The empirical formula calculated on 26.11 (O + F) apfu is Na<span>1.07</span>K<span>0.37</span>Cs<span>0.30</span>Sr<span>1.21</span>Ca<span>0.37</span>Pb<span>0.24</span>Ba<span>0.06</span>(Ce<span>0.43</span>Nd<span>0.41</span>Pr<span>0.08</span>La<span>0.06</span>Sm<span>0.03</span>Gd<span>0.01</span>Er<span>0.01</span>Ho<span>0.01</span>)<span>Σ1.04</span>(Ti<span>0.97</span>Nb<span>0.04</span>)<span>Σ1.01</span>Si<span>8.06</span>O<span>25.21</span>F<span>0.90</span>H<span>6.42</span>, <span>Z</span> = 4. The simplified formula is (Na,□)(K,Сs)(Ca,Pb,Sr,Na)Sr<span>Ln</span><span>3+</span>Ti(Si<span>8</span>O<span>21</span>)OF(H<span>2</span>O)<span>3</span>, where Ce is the dominant lanthanoid. The crystal structure was solved by direct methods and refined to an <span>R</span><span>1</span> index of 2.74%. In kalyuzhnyite-(Ce), the main structural units are a heteropolyhedral Na–Sr–Ce–Ti sheet, ideally [NaSrCeTiOF]<span>7+</span>, and a double (Si<span>8</span>O<span>21</span>)<span>10–</span> sheet parallel to (010). In the Si–O sheet, the Si tetrahedra form ten-membered rings. This is the first occurrence of such a double Si–O sheet in a mineral. The two sheets connect via common vertices of Na-, Sr-, Ce- and Ti-polyhedra and SiO<span>4</span> tetrahedra to form a framework. The interstitial cations and H<span>2</span>O groups, ideally [(CaK)(H<span>2</span>O)<span>3</span>]<span>3+</span><span>,</span> occur within the Si–O sheet. The mineral is named in honour","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139771716","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":"Newsletter 75","authors":"Ferdinando Bosi, Frédéric Hatert, Marco Pasero, Stuart J. Mills","doi":"10.1180/mgm.2023.76","DOIUrl":"https://doi.org/10.1180/mgm.2023.76","url":null,"abstract":"An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136059512","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":"Letnikovite-(Ce), (Nao)Ca₂Ce₂[Si₇O₁₇(OH)]F₄(H₂O)_4, a new mineral from the Darai-Pioz alkaline massif, Tajikistan: mineral description, crystal structure and a new single [Si₇O₁₇(OH)] sheet","authors":"Atali A. Agakhanov, Elena Sokolova, Fernando Cámara, Vladimir Yu. Karpenko, Frank C. Hawthorne, Leonid A. Pautov, Anatoly V. Kasatkin, Igor V. Pekov, Vitaliya A. Agakhanova","doi":"10.1180/mgm.2023.65","DOIUrl":"https://doi.org/10.1180/mgm.2023.65","url":null,"abstract":"An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135094979","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":"Secondary uranyl arsenates-phosphates and Sb-Bi-rich minerals of the segnitite-philipsbornite series in the oxidation zone at the Prakovce-Zimná Voda REE-U-Au quartz vein mineralization, Western Carpathians, Slovakia","authors":"Martin Ondrejka, Štefan Ferenc, Juraj Majzlan, Martin Števko, Richard Kopáčik, Bronislava Voleková, Stanislava Milovská, Jörg Göttlicher, Ralph Steininger, Tomáš Mikuš, Pavel Uher, Adrián Biroň, Jiří Sejkora, Alexandra Molnárová","doi":"10.1180/mgm.2023.75","DOIUrl":"https://doi.org/10.1180/mgm.2023.75","url":null,"abstract":"","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135590556","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":"MGM volume 87 issue 5 Cover","authors":"","doi":"10.1180/mgm.2023.84","DOIUrl":"https://doi.org/10.1180/mgm.2023.84","url":null,"abstract":"An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136167871","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":"A re-evaluation of stannopalladinite using modern analytical techniques","authors":"Anatoly V. Kasatkin, Anna Vymazalová, Fabrizio Nestola, Vladislav V. Gurzhiy, Atali A. Agakhanov, Radek Škoda, Dmitry I. Belakovskiy, Mikhail E. Generalov","doi":"10.1180/mgm.2023.73","DOIUrl":"https://doi.org/10.1180/mgm.2023.73","url":null,"abstract":"Abstract An investigation of sample 41647 from the Platinum Placer of Ugol'nyi Ruchei, Norilsk Cu–Ni deposit, Russia, stored in the systematic collection of the Fersman Mineralogical Museum, revealed that it contained a mineral that can be identified as the original stannopalladinite described in 1947. As the literature information on the latter is controversial, the mineral was re-investigated using modern analytical techniques. Stannopalladinite occurs as spherical and ovoid-shaped grains up to 0.08 mm, closely intergrown with tetraferroplatinum as part of flattened, prismatic crystals up to 6 mm long. The micro-indentation hardness of stannopalladinite (VHN, 30 g load) is 244 kg/mm 2 (range 233–266, n = 4), corresponding to a Mohs hardness of 4. The calculated density is 9.781 g/cm 3 . In reflected light, stannopalladinite is pale pink. The bireflectance is noticeable only in oil immersion. In crossed nicols the mineral exhibits strong anisotropy with colour effects changing from reddish purple to greyish blue and polysynthetic twinning of grains. The reflectance curves show distinct anomalous dispersion. The chemical composition (wt.%, electron microprobe data, mean of 11 analyses) is: Cu 8.48, Pd 61.21, Pt 0.89, Sn 25.87, Pb 3.70, total 100.15. The empirical formula calculated on the basis of 4 atoms per formula unit is (Pd 2.42 Cu 0.56 Pt 0.02 ) Σ3.00 (Sn 0.92 Pb 0.08 ) Σ1.00 . The ideal chemical formula of stannopalladinite is therefore proposed as (Pd,Cu) 3 Sn instead of Pd 3 Sn 2 used in the official IMA List of Minerals. The strongest powder X-ray diffraction lines are [ d obs , Å ( I , %) ( hkl ) ]: 2.292 (42) (231), 2.166 (100) (331), 2.034 (10) (710), 1.916 (15) (141) and 1.851 (15) (630). The powder X-ray data are indexed in the orthorhombic unit cell with a = 14.634(2), b = 8.5253(6), c = 4.5946(3) Å and V = 573.24(7) Å 3 ( Z = 8). Stannopalladinite can be reliably identified among all other minerals belonging to the binary Pd–Sn and ternary Pd–Cu–Sn systems by a combination of chemical, optical and X-ray data.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136308726","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":"Can lithium contents in mica be correctly calculated? Tischendorf´s proposal (Mineralogical Magazine 61/1997) 25 years after","authors":"Karel Breiter, Michaela Vašinová Galiová, Zuzana Korbelová, Michaela Hložková","doi":"10.1180/mgm.2023.72","DOIUrl":"https://doi.org/10.1180/mgm.2023.72","url":null,"abstract":"An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135110024","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":"Narsarsukite in peralkaline granites from the Papanduva Pluton, Graciosa Province, south Brazil: Insights from textural and chemical features","authors":"Silvio R.F. Vlach, Frederico C.J. Vilalva","doi":"10.1180/mgm.2023.70","DOIUrl":"https://doi.org/10.1180/mgm.2023.70","url":null,"abstract":"An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135830095","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}