首页 > 最新文献

Mineralogical Magazine最新文献

英文 中文
Classifying minerals and their related names in a relational database 在关系数据库中对矿物及其相关名称进行分类
IF 2.7 3区 地球科学 Q2 MINERALOGY Pub Date : 2023-04-20 DOI: 10.1180/mgm.2023.23
L. Gavryliv, V. Ponomar, M. Putiš
Abstract The categorisation of minerals and their related names, such as synonyms, obsolete or historical names, varieties or mixtures, is an asset for designing an interoperable and consistent mineralogical data warehouse. An enormous amount of this data, provided by mindat.org and other resources, was reviewed and analysed during the research. The analysis indicates the existence of several categories of (1) the abstract titles or designations representing the link to the original material or a group of names or substances without actual physical representation, and (2) the unique names representing actual physical material, compounds, or an aggregate of one or more minerals. A revision of the dependency between the categories attributes stored in a database (e.g. chemical properties, physical properties) and their classification status assigned allowed us to design a robust prototype for maintaining database integrity and consistency. The proposed scheme allows standardisation and structuring of officially regulated and maintained species, e.g. IMA-approved, and, in addition, unregulated ones.
矿物及其相关名称的分类,如同义词、过时或历史名称、品种或混合物,是设计可互操作和一致的矿物学数据仓库的资产。在研究过程中,对mindat.org和其他资源提供的大量数据进行了审查和分析。分析表明存在以下几种类别:(1)代表与原始材料或一组名称或物质的联系的抽象标题或名称,而没有实际的物理表示;(2)代表实际物理材料、化合物或一种或多种矿物的集合体的唯一名称。对数据库中存储的类别属性(如化学属性、物理属性)及其分类状态之间的依赖关系进行修订,使我们能够设计一个健壮的原型来维护数据库的完整性和一致性。拟议的计划允许对官方管制和维持的物种进行标准化和结构化,例如ima批准的物种,此外还有不受管制的物种。
{"title":"Classifying minerals and their related names in a relational database","authors":"L. Gavryliv, V. Ponomar, M. Putiš","doi":"10.1180/mgm.2023.23","DOIUrl":"https://doi.org/10.1180/mgm.2023.23","url":null,"abstract":"Abstract The categorisation of minerals and their related names, such as synonyms, obsolete or historical names, varieties or mixtures, is an asset for designing an interoperable and consistent mineralogical data warehouse. An enormous amount of this data, provided by mindat.org and other resources, was reviewed and analysed during the research. The analysis indicates the existence of several categories of (1) the abstract titles or designations representing the link to the original material or a group of names or substances without actual physical representation, and (2) the unique names representing actual physical material, compounds, or an aggregate of one or more minerals. A revision of the dependency between the categories attributes stored in a database (e.g. chemical properties, physical properties) and their classification status assigned allowed us to design a robust prototype for maintaining database integrity and consistency. The proposed scheme allows standardisation and structuring of officially regulated and maintained species, e.g. IMA-approved, and, in addition, unregulated ones.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":"87 1","pages":"480 - 493"},"PeriodicalIF":2.7,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44582976","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}
引用次数: 0
Mikenewite, the natural analogue of synthetic α-Mn2+(S4+O3)⋅3H2O, a new sulfite mineral from the Ojuela mine, Mapimí, Mexico Mikenewite,合成α-Mn2+(S4+O3)⋅3H2O的天然类似物,产自墨西哥Ojuela矿Mapimí
IF 2.7 3区 地球科学 Q2 MINERALOGY Pub Date : 2023-04-19 DOI: 10.1180/mgm.2023.24
Hexiong Yang, R. Jenkins, J. McGlasson, R. Gibbs, R. Downs
Abstract A new mineral species, mikenewite (IMA2022-102), ideally Mn2+(S4+O3)⋅3H2O, has been discovered from the San Judas Chimney, Ojuela mine, Mapimí, Durango, Mexico. It occurs as spheres of platy crystals. Associated minerals include goethite, cryptomelane, adamite and lotharmeyerite. Mikenewite is yellowish in transmitted light, transparent with a white streak and vitreous lustre. It is brittle and has a Mohs hardness of 2½–3. Cleavage is perfect on {101}. The measured and calculated densities are 2.48(5) and 2.467 g/cm3, respectively. Optically, mikenewite is biaxial (+), with α = 1.606(5), β = 1.614(5), γ = 1.627(1) (white light), 2V(meas.) = 69(3)° and 2V(calc.) = 77°. An electron microprobe analysis yielded an empirical formula (based on 6 O apfu) of (Mn0.86Zn0.12Fe0.04Ca0.02)Σ1.04(S0.98O3)⋅3H2O, which can be simplified to (Mn,Zn,Fe)(SO3)⋅3H2O. Mikenewite is the natural analogue of synthetic α-Mn2+(S4+O3)⋅3H2O, as well as the Mn-analogue of albertiniite, Fe2+(S4+O3)⋅3H2O. It is monoclinic, with space group P21/n and unit-cell parameters a = 6.6390(3), b = 8.8895(4), c = 8.7900(4) Å, β = 96.095(2)°, V = 515.83(4) Å3 and Z = 4. The crystal structure of mikenewite is characterised by each Mn atom coordinated octahedrally by six O atoms, three from different sulfite O atoms and three from H2O molecules. Each S4+O3 group is bonded to three Mn atoms, resulting in a sheet parallel to (101) with the sheet composition of Mn2+(S4+O3)⋅3H2O. Such sheets, stacked along [10$bar{1}$], are joined together by hydrogen bonds, accounting for the perfect cleavage of the mineral. Mikenewite is dimorphous with orthorhombic Pnma gravegliaite, as albertiniite is with fleisstalite. Its discovery from the Ojuela mine, which is particularly rich in Zn, implies the possibility of finding Zn-bearing sulfites there as well.
摘要:在墨西哥杜兰戈Ojuela矿Mapimí的San Judas Chimney中发现了一种新的矿物mikenewite (IMA2022-102),理想形态为Mn2+(S4+O3)⋅3H2O。它以片状晶体的形式出现。伴生矿物包括针铁矿、隐锰矿、adamite和lotharmeerite。mikenewitte在透射光下呈淡黄色,透明,带有白色条纹和玻璃光泽。它很脆,莫氏硬度为2½-3。乳沟是完美的{101}。实测密度和计算密度分别为2.48(5)和2.467 g/cm3。光学上,mikenewhite是双轴(+),α = 1.606(5), β = 1.614(5), γ = 1.627(1)(白光),2V(mean .) = 69(3)°,2V(calc.) = 77°。电子探针分析得到(Mn0.86Zn0.12Fe0.04Ca0.02)Σ1.04(s0.980 o3)⋅3H2O的经验式(基于6 O apfu),可简化为(Mn,Zn,Fe)(SO3)⋅3H2O。mikenewitte是人工合成α-Mn2+(S4+O3)⋅3H2O的天然类似物,也是albertiniite的mn类似物Fe2+(S4+O3)⋅3H2O。它是单斜的,空间群P21/n,单位胞参数a = 6.6390(3), b = 8.8895(4), c = 8.7900(4) Å, β = 96.095(2)°,V = 515.83(4) Å3, Z = 4。镁镁石的晶体结构特点是:每个Mn原子与6个O原子八面体配位,其中3个来自不同的亚硫酸盐O原子,3个来自H2O分子。每个S4+O3基团与3个Mn原子键合,形成平行于(101)的薄片,薄片组成为Mn2+(S4+O3)⋅3H2O。这样的薄片,沿着[10$bar{1}$]堆积,由氢键连接在一起,说明了矿物的完美解理。镁辉石与正方晶的Pnma榴辉岩是二形的,而阿尔伯太石与弹性岩是二形的。它是在Ojuela矿中发现的,该矿含锌特别丰富,这意味着在那里也有可能发现含锌亚硫酸盐。
{"title":"Mikenewite, the natural analogue of synthetic α-Mn2+(S4+O3)⋅3H2O, a new sulfite mineral from the Ojuela mine, Mapimí, Mexico","authors":"Hexiong Yang, R. Jenkins, J. McGlasson, R. Gibbs, R. Downs","doi":"10.1180/mgm.2023.24","DOIUrl":"https://doi.org/10.1180/mgm.2023.24","url":null,"abstract":"Abstract A new mineral species, mikenewite (IMA2022-102), ideally Mn2+(S4+O3)⋅3H2O, has been discovered from the San Judas Chimney, Ojuela mine, Mapimí, Durango, Mexico. It occurs as spheres of platy crystals. Associated minerals include goethite, cryptomelane, adamite and lotharmeyerite. Mikenewite is yellowish in transmitted light, transparent with a white streak and vitreous lustre. It is brittle and has a Mohs hardness of 2½–3. Cleavage is perfect on {101}. The measured and calculated densities are 2.48(5) and 2.467 g/cm3, respectively. Optically, mikenewite is biaxial (+), with α = 1.606(5), β = 1.614(5), γ = 1.627(1) (white light), 2V(meas.) = 69(3)° and 2V(calc.) = 77°. An electron microprobe analysis yielded an empirical formula (based on 6 O apfu) of (Mn0.86Zn0.12Fe0.04Ca0.02)Σ1.04(S0.98O3)⋅3H2O, which can be simplified to (Mn,Zn,Fe)(SO3)⋅3H2O. Mikenewite is the natural analogue of synthetic α-Mn2+(S4+O3)⋅3H2O, as well as the Mn-analogue of albertiniite, Fe2+(S4+O3)⋅3H2O. It is monoclinic, with space group P21/n and unit-cell parameters a = 6.6390(3), b = 8.8895(4), c = 8.7900(4) Å, β = 96.095(2)°, V = 515.83(4) Å3 and Z = 4. The crystal structure of mikenewite is characterised by each Mn atom coordinated octahedrally by six O atoms, three from different sulfite O atoms and three from H2O molecules. Each S4+O3 group is bonded to three Mn atoms, resulting in a sheet parallel to (101) with the sheet composition of Mn2+(S4+O3)⋅3H2O. Such sheets, stacked along [10$bar{1}$], are joined together by hydrogen bonds, accounting for the perfect cleavage of the mineral. Mikenewite is dimorphous with orthorhombic Pnma gravegliaite, as albertiniite is with fleisstalite. Its discovery from the Ojuela mine, which is particularly rich in Zn, implies the possibility of finding Zn-bearing sulfites there as well.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":"2 3","pages":"534 - 541"},"PeriodicalIF":2.7,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41243597","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}
引用次数: 0
Evidence of the anthropogenic origin of the ‘Carmel sapphire’ with enigmatic super-reduced minerals 具有神秘的超还原矿物的“卡梅尔蓝宝石”的人为起源证据
IF 2.7 3区 地球科学 Q2 MINERALOGY Pub Date : 2023-04-19 DOI: 10.1180/mgm.2023.25
E. Galuskin, I. Galuskina
Abstract Corundum with inclusions of enigmatic super-reduced minerals was found in mineral separates received as a result of alluvial sediment exploration near Mt Carmel, Israel by the Shefa Yamim Company. This corundum, registered as ‘Carmel sapphireTM’, has been an object of numerous publications by W. Griffin's scientific team, in which they propose a questionable hypothesis of sapphire formation at the crust–mantle boundary with the participation of CH4+H2 fluids. Typically the Carmel sapphire is in small fragments of breccia with white cement, which in the opinion of Griffin et al. is a carbonate-cemented volcanic ash. Our investigation of the ‘white breccia’ showed that it consists of unsorted angular fragments of Carmel sapphire from ~1 μm to 7 mm in size cemented by aluminium hydroxides (bauxite) and is a waste product of the fused alumina process, i.e. it has an anthropogenic origin. Phases typical for slags of fused alumina production and metallurgical slags were identified in the ‘white breccia’. Carmel sapphire has numerous microscopic spherical inclusions of Si–Fe alloy indicating that the removal of Si and Fe from the corundum melt occurred at a temperature >2000°С. Osbornite, TiN, from Carmel sapphire has a chemical zonation characteristic of osbornite from fused alumina with enrichment of central zones in carbon. Comparison of the growth heterogeneity of Carmel sapphire and ‘electrocorundum’ indicates that the crystallisation of the corundum melt proceeded in a similar way. Unfortunately, in the case of Carmel sapphire from the Carmel locality, the contamination of geological samples with anthropogenic material has led to popularisation of biased views.
摘要:Shefa Yamim公司在以色列Carmel山附近的冲积沉积物勘探中获得的矿物分离物中发现了含有神秘超还原矿物的刚玉。这一刚玉被命名为“Carmel蓝宝石”,W. Griffin的科学团队发表了大量论文。在论文中,他们提出了一个可疑的假设,即在壳-地幔边界有CH4+H2流体的参与,形成了蓝宝石。典型的卡梅尔蓝宝石是在白色胶结角砾岩的小碎片中,Griffin等人认为这是一种碳酸盐胶结火山灰。我们对“白色角砾岩”的研究表明,它由未分选的卡梅尔蓝宝石角状碎片组成,大小从1 μm到7 mm不等,由氢氧化铝(铝土矿)粘合而成,是熔融氧化铝工艺的废物,即它具有人为起源。在“白色角砾岩”中发现了熔融氧化铝生产渣和冶金渣的典型相。卡梅尔蓝宝石有许多微观的Si - Fe合金球形夹杂物,表明Si和Fe从刚玉熔体中去除发生在温度>2000°С。从卡梅尔蓝宝石中提取的硅辉石具有刚玉中硅辉石的化学分带特征,其中心带富集碳。卡梅尔蓝宝石和“电刚玉”生长异质性的比较表明,刚玉熔体的结晶过程类似。不幸的是,在卡梅尔地区的卡梅尔蓝宝石的案例中,人为物质污染了地质样品,导致了偏见观点的普及。
{"title":"Evidence of the anthropogenic origin of the ‘Carmel sapphire’ with enigmatic super-reduced minerals","authors":"E. Galuskin, I. Galuskina","doi":"10.1180/mgm.2023.25","DOIUrl":"https://doi.org/10.1180/mgm.2023.25","url":null,"abstract":"Abstract Corundum with inclusions of enigmatic super-reduced minerals was found in mineral separates received as a result of alluvial sediment exploration near Mt Carmel, Israel by the Shefa Yamim Company. This corundum, registered as ‘Carmel sapphireTM’, has been an object of numerous publications by W. Griffin's scientific team, in which they propose a questionable hypothesis of sapphire formation at the crust–mantle boundary with the participation of CH4+H2 fluids. Typically the Carmel sapphire is in small fragments of breccia with white cement, which in the opinion of Griffin et al. is a carbonate-cemented volcanic ash. Our investigation of the ‘white breccia’ showed that it consists of unsorted angular fragments of Carmel sapphire from ~1 μm to 7 mm in size cemented by aluminium hydroxides (bauxite) and is a waste product of the fused alumina process, i.e. it has an anthropogenic origin. Phases typical for slags of fused alumina production and metallurgical slags were identified in the ‘white breccia’. Carmel sapphire has numerous microscopic spherical inclusions of Si–Fe alloy indicating that the removal of Si and Fe from the corundum melt occurred at a temperature >2000°С. Osbornite, TiN, from Carmel sapphire has a chemical zonation characteristic of osbornite from fused alumina with enrichment of central zones in carbon. Comparison of the growth heterogeneity of Carmel sapphire and ‘electrocorundum’ indicates that the crystallisation of the corundum melt proceeded in a similar way. Unfortunately, in the case of Carmel sapphire from the Carmel locality, the contamination of geological samples with anthropogenic material has led to popularisation of biased views.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":"87 1","pages":"619 - 630"},"PeriodicalIF":2.7,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44994394","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}
引用次数: 3
Libbyite, (NH4)2(Na2□)[(UO2)2(SO4)3(H2O)]2⋅7H2O, a new mineral with uranyl-sulfate sheets from the Blue Lizard mine, San Juan County, Utah, USA. (NH4)2(Na2□)[(UO2)2(SO4)3(H2O)]2⋅7H2O:来自美国犹他州圣胡安县Blue Lizard矿的硫酸盐铀酰板新矿物。
IF 2.7 3区 地球科学 Q2 MINERALOGY Pub Date : 2023-04-19 DOI: 10.1180/mgm.2023.26
A. R. Kampf, T. Olds, J. Plášil, B. Nash, J. Marty
Abstract The new mineral libbyite (IMA2022-091), (NH4)2(Na2□)[(UO2)2(SO4)3(H2O)]2⋅7H2O, was found in the Blue Lizard mine, San Juan County, Utah, USA, where it occurs as tightly intergrown aggregates of light green–yellow equant crystals in a secondary assemblage with bobcookite, coquimbite, halotrichite, metavoltine, rhomboclase, römerite, tamarugite, voltaite and zincorietveldite. The streak is very pale green yellow and the fluorescence is strong green under 405 nm ultraviolet light. Crystals are transparent with vitreous lustre. The tenacity is brittle, the Mohs hardness is ~2½, the fracture is curved. The mineral is soluble in H2O and has a calculated density of 3.465 g⋅cm–3. The mineral is optically uniaxial (–) with ω = 1.581(2) and ɛ = 1.540(2). Electron microprobe analyses provided (NH4)1.92K0.08Na2.00U4.00S6.00O41H18.00. Libbyite is tetragonal, P41212, a = 10.7037(11), c = 31.824(2) Å, V = 3646.0(8) Å3 and Z = 4. The structural unit is a uranyl–sulfate sheet that has the same topology as the sheets in several synthetic uranyl selenates.
{"title":"Libbyite, (NH4)2(Na2□)[(UO2)2(SO4)3(H2O)]2⋅7H2O, a new mineral with uranyl-sulfate sheets from the Blue Lizard mine, San Juan County, Utah, USA.","authors":"A. R. Kampf, T. Olds, J. Plášil, B. Nash, J. Marty","doi":"10.1180/mgm.2023.26","DOIUrl":"https://doi.org/10.1180/mgm.2023.26","url":null,"abstract":"Abstract The new mineral libbyite (IMA2022-091), (NH4)2(Na2□)[(UO2)2(SO4)3(H2O)]2⋅7H2O, was found in the Blue Lizard mine, San Juan County, Utah, USA, where it occurs as tightly intergrown aggregates of light green–yellow equant crystals in a secondary assemblage with bobcookite, coquimbite, halotrichite, metavoltine, rhomboclase, römerite, tamarugite, voltaite and zincorietveldite. The streak is very pale green yellow and the fluorescence is strong green under 405 nm ultraviolet light. Crystals are transparent with vitreous lustre. The tenacity is brittle, the Mohs hardness is ~2½, the fracture is curved. The mineral is soluble in H2O and has a calculated density of 3.465 g⋅cm–3. The mineral is optically uniaxial (–) with ω = 1.581(2) and ɛ = 1.540(2). Electron microprobe analyses provided (NH4)1.92K0.08Na2.00U4.00S6.00O41H18.00. Libbyite is tetragonal, P41212, a = 10.7037(11), c = 31.824(2) Å, V = 3646.0(8) Å3 and Z = 4. The structural unit is a uranyl–sulfate sheet that has the same topology as the sheets in several synthetic uranyl selenates.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42376673","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}
引用次数: 1
Calcioancylite-(La), (La,Ca)2(CO3)2(OH,H2O)2, a new member of the ancylite group from Gejiu nepheline syenite, Yunnan Province, China 钙安云母-(La), (La,Ca)2(CO3)2(OH,H2O)2,云南个旧霞石正长岩中安云母群的新成员
IF 2.7 3区 地球科学 Q2 MINERALOGY Pub Date : 2023-04-19 DOI: 10.1180/mgm.2023.28
Yanjuan Wang, X. Gu, G. Dong, Z. Hou, F. Nestola, Zhusen Yang, Guang Fan, Yufei Wang, Kai Qu
Abstract Calcioancylite-(La), ideally (La,Ca)2(CO3)2(OH,H2O)2, has been discovered from nepheline syenite of the Gejiu alkaline complex in the Honghe Hani and Yi Autonomous Prefecture, Yunnan Province, China. The mineral occurs as aggregates of subhedral grains, and the size of single crystals varies between 5–20 μm. Calcioancylite-(La) is colourless to pale pinkish grey and has transparent to translucent lustre. It is brittle with a Mohs hardness of 4. The calculated density is 4.324 g/cm3. The mineral is biaxial (−), with α =1.662, β = 1.730, γ = 1.771, 2Vmeas. = 70°(1) and 2Vcalc. = 73°. Electron microprobe analysis for holotype material yielded an empirical formula of (La0.58Ce0.55Pr0.14Nd0.10Ca0.39Sr0.20K0.04)Σ2.00(CO3)2[(OH)1.25F0.06⋅0.69H2O]Σ2.00. Calcioancylite-(La) is orthorhombic, with space group Pmcn, a = 5.0253(3) Å, b = 8.5152(6) Å, c = 7.2717(6) Å, V = 311.17(4) Å3 and Z = 2. By using single-crystal X-ray diffraction, the crystal structure has been determined and refined to a final R1 = 0.0652 on the basis of 347 independent reflections (I > 2σ). The seven strongest powder X-ray diffraction lines [d in Å (I) (hkl)] are: 2.334 (100) (013), 2.970 (80) (121), 4.334 (75) (110), 3.678 (68) (111), 2.517 (55) (200), 2.647 (47) (031) and 2.077 (44) (221). Calcioancylite-(La) is the La-analogue of calcioancylite-(Ce) and is a new member of ancylite-group minerals. The mineral and its name have been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA2021-090).
摘要在云南省红河哈尼族彝族自治州个旧碱性杂岩体的霞石正长岩中发现了钙铝榴石-(La),最好是(La,Ca)2(CO3)2(OH,H2O)2。该矿物以半自形颗粒的聚集体形式出现,单晶的大小在5–20μm之间。钙水杨石-(La)无色至浅粉灰色,具有透明至半透明的光泽。它很脆,莫氏硬度为4。计算出的密度为4.324 g/cm3。矿物为双轴(−),α=1.662,β=1.730,γ=1.771,2Vmeas=70°(1)和2Calc.=73°。正模材料的电子探针分析得出经验公式为(La0.58Ce0.55Pr0.14Nd0.10Ca0.39Sr0.20K0.04)∑2.00(CO3)2[(OH)1.25F0.06·0.69H2O]∑2.00。钙铝酸钙石-(La)是斜方晶系,空间群为Pmcn,a=5.0253(3)Å,b=8.5152(6)Å、c=7.2717(6)å、V=311.117(4)Å3和Z=2。通过单晶X射线衍射,在347次独立反射(I>2σ)的基础上,确定并细化了晶体结构,最终R1=0.0652。七条最强的粉末X射线衍射线[dinÅ(I)(hkl)]分别为:2.334(100)(013)、2.970(80)(121)、4.334(75)(110)、3.678(68)(111)、2.517(55)(200)、2.647(47)(031)和2.077(44)(221)。钙酸钙岩-(La)是钙酸钙石-(Ce)的La类似物,是一种新的方沸石类矿物。该矿物及其名称已获得国际矿物学协会新矿物、命名和分类委员会(IMA2021-090)的批准。
{"title":"Calcioancylite-(La), (La,Ca)2(CO3)2(OH,H2O)2, a new member of the ancylite group from Gejiu nepheline syenite, Yunnan Province, China","authors":"Yanjuan Wang, X. Gu, G. Dong, Z. Hou, F. Nestola, Zhusen Yang, Guang Fan, Yufei Wang, Kai Qu","doi":"10.1180/mgm.2023.28","DOIUrl":"https://doi.org/10.1180/mgm.2023.28","url":null,"abstract":"Abstract Calcioancylite-(La), ideally (La,Ca)2(CO3)2(OH,H2O)2, has been discovered from nepheline syenite of the Gejiu alkaline complex in the Honghe Hani and Yi Autonomous Prefecture, Yunnan Province, China. The mineral occurs as aggregates of subhedral grains, and the size of single crystals varies between 5–20 μm. Calcioancylite-(La) is colourless to pale pinkish grey and has transparent to translucent lustre. It is brittle with a Mohs hardness of 4. The calculated density is 4.324 g/cm3. The mineral is biaxial (−), with α =1.662, β = 1.730, γ = 1.771, 2Vmeas. = 70°(1) and 2Vcalc. = 73°. Electron microprobe analysis for holotype material yielded an empirical formula of (La0.58Ce0.55Pr0.14Nd0.10Ca0.39Sr0.20K0.04)Σ2.00(CO3)2[(OH)1.25F0.06⋅0.69H2O]Σ2.00. Calcioancylite-(La) is orthorhombic, with space group Pmcn, a = 5.0253(3) Å, b = 8.5152(6) Å, c = 7.2717(6) Å, V = 311.17(4) Å3 and Z = 2. By using single-crystal X-ray diffraction, the crystal structure has been determined and refined to a final R1 = 0.0652 on the basis of 347 independent reflections (I > 2σ). The seven strongest powder X-ray diffraction lines [d in Å (I) (hkl)] are: 2.334 (100) (013), 2.970 (80) (121), 4.334 (75) (110), 3.678 (68) (111), 2.517 (55) (200), 2.647 (47) (031) and 2.077 (44) (221). Calcioancylite-(La) is the La-analogue of calcioancylite-(Ce) and is a new member of ancylite-group minerals. The mineral and its name have been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA2021-090).","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":"87 1","pages":"554 - 560"},"PeriodicalIF":2.7,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47464019","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}
引用次数: 0
Bystrite, Na7Ca(Al6Si6O24)S52–Cl–: formula redefinition and relationships with other four-layer cancrinite-group minerals 方镁矿、Na7Ca(Al6Si6O24)S52–Cl–:公式的重新定义及其与其他四层方镁矿族矿物的关系
IF 2.7 3区 地球科学 Q2 MINERALOGY Pub Date : 2023-04-19 DOI: 10.1180/mgm.2023.29
N. Chukanov, A. Sapozhnikov, E. Kaneva, D. Varlamov, M. Vigasina
Abstract Bystrite is redefined as a four-layer cancrinite-group mineral with the four-layer Losod-type framework and the end-member formula Na7Ca(Al6Si6O24)S52–Cl–. The mineral is known only at the Malo–Bystrinskoe gem lazurite deposit, Baikal Lake area, Siberia, Russia. The associated minerals are calcite, lazurite, sodalite, fluorapatite, phlogopite, diopside, dolomite and plagioclase. Bystrite is brittle, with the Mohs hardness of 5 and distinct cleavage on {10$bar{1}$0}. The yellow colour of bystrite is due to the presence of S52– anions occurring in Losod (LOS) cages of the aluminosilicate framework with the ABAC stacking sequence. Measured and calculated density is, respectively, 2.43(1) and 2.412 g cm–3 for the holotype and 2.42(1) and 2.428 g cm–3 for the cotype sample. Bystrite is uniaxial (+), ɛ = 1.660(2) and ω = 1.584(2). The mineral was characterised by infrared and Raman spectra. The empirical formulae of the holotype and cotype samples are Na6.97K0.04Ca0.98(Si6.03Al5.97O24)(S52–)0.93[(SO42–)0.15Cl0.83] and Na6.75K0.04Ca1.11(Si6.09Al5.91O24)(S52–)1.04[(HS–)0.17Cl0.85], respectively. Bystrite is trigonal, space group P31c. The unit-cell parameters are: a = 12.8527(6) Å, c = 10.6907(5) Å, V = 1529.4(1) Å3 and Z = 2. The strongest lines of the powder X-ray diffraction pattern [d, Å (I, %) (hkl)] are: 4.821 (32) (102), 3.915 (38) (211), 3.712 (100) (300), 3.307 (50) (212), 2.782 (18) (400), 2.692 (22) (401), 2.673 (30) (004) and 2.468 (23) (402). Isomorphism and genesis of bystrite-type minerals is discussed. Bystrite and its K,HS-analogue sulfhydrylbystrite, Na5K2Ca(Al6Si6O24)S52–(HS)–, are indicators of highly reducing conditions.
摘要Bystrite被重新定义为具有四层Losod型骨架的四层钙矾石族矿物,其端基分子式为Na7Ca(Al6Si6O24)S52–Cl–。该矿物仅在俄罗斯西伯利亚贝加尔湖地区的Malo–Bystrinskoe宝石-青金石矿床中已知。伴生矿物有方解石、天青石、方钠石、氟磷灰石、金云母、透辉石、白云石和斜长石。Bystrite是脆性的,莫氏硬度为5,在{10$bar{1}$0}上有明显的解理。bystrite的黄色是由于在具有ABAC堆叠序列的铝硅酸盐框架的Losod(LOS)笼中存在S52-阴离子。正模样品的测量密度和计算密度分别为2.43(1)和2.412 g cm–3,同型样品的测量和计算密度为2.42(1)或2.428 g cm–3。Bystrite为单轴(+),?=1.660(2),ω=1.584(2)。用红外光谱和拉曼光谱对其进行了表征。正模和共模样品的经验公式分别为Na6.97K0.04Ca0.98(Si6.03Al5.97O24)(S52-)0.93[(SO42-)0.15Cl0.83]和Na6.75K0.04Ca1.11(Si6.09Al5.91O24))(S52–)1.04[(HS–)0.17Cl0.85]。Bystrite是三角的,空间群P31c。晶胞参数为:a=12.8527(6)Å,c=10.6907(5)Å、V=1529.4(1)Å3和Z=2。粉末X射线衍射图的最强谱线[d,Å(I,%)(hkl)]为:4.821(32)(102)、3.915(38)(211)、3.712(100)(300)、3.307(50)(212)、2.782(18)(400)、2.692(22)(401)、2.673(30)(004)和2.468(23)(402)。讨论了榴石型矿物的同构性和成因。亚镁石及其K,HS类似物巯基亚镁石Na5K2Ca(Al6Si6O24)S52–(HS)–是高度还原条件的指标。
{"title":"Bystrite, Na7Ca(Al6Si6O24)S52–Cl–: formula redefinition and relationships with other four-layer cancrinite-group minerals","authors":"N. Chukanov, A. Sapozhnikov, E. Kaneva, D. Varlamov, M. Vigasina","doi":"10.1180/mgm.2023.29","DOIUrl":"https://doi.org/10.1180/mgm.2023.29","url":null,"abstract":"Abstract Bystrite is redefined as a four-layer cancrinite-group mineral with the four-layer Losod-type framework and the end-member formula Na7Ca(Al6Si6O24)S52–Cl–. The mineral is known only at the Malo–Bystrinskoe gem lazurite deposit, Baikal Lake area, Siberia, Russia. The associated minerals are calcite, lazurite, sodalite, fluorapatite, phlogopite, diopside, dolomite and plagioclase. Bystrite is brittle, with the Mohs hardness of 5 and distinct cleavage on {10$bar{1}$0}. The yellow colour of bystrite is due to the presence of S52– anions occurring in Losod (LOS) cages of the aluminosilicate framework with the ABAC stacking sequence. Measured and calculated density is, respectively, 2.43(1) and 2.412 g cm–3 for the holotype and 2.42(1) and 2.428 g cm–3 for the cotype sample. Bystrite is uniaxial (+), ɛ = 1.660(2) and ω = 1.584(2). The mineral was characterised by infrared and Raman spectra. The empirical formulae of the holotype and cotype samples are Na6.97K0.04Ca0.98(Si6.03Al5.97O24)(S52–)0.93[(SO42–)0.15Cl0.83] and Na6.75K0.04Ca1.11(Si6.09Al5.91O24)(S52–)1.04[(HS–)0.17Cl0.85], respectively. Bystrite is trigonal, space group P31c. The unit-cell parameters are: a = 12.8527(6) Å, c = 10.6907(5) Å, V = 1529.4(1) Å3 and Z = 2. The strongest lines of the powder X-ray diffraction pattern [d, Å (I, %) (hkl)] are: 4.821 (32) (102), 3.915 (38) (211), 3.712 (100) (300), 3.307 (50) (212), 2.782 (18) (400), 2.692 (22) (401), 2.673 (30) (004) and 2.468 (23) (402). Isomorphism and genesis of bystrite-type minerals is discussed. Bystrite and its K,HS-analogue sulfhydrylbystrite, Na5K2Ca(Al6Si6O24)S52–(HS)–, are indicators of highly reducing conditions.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":"87 1","pages":"455 - 464"},"PeriodicalIF":2.7,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43057054","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}
引用次数: 1
Newsletter 72 时事通讯72
IF 2.7 3区 地球科学 Q2 MINERALOGY Pub Date : 2023-04-11 DOI: 10.1180/mgm.2023.21
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, Stuart J. Mills
{"title":"Newsletter 72","authors":"Ferdinando Bosi, Frédéric Hatert, Marco Pasero, Stuart J. Mills","doi":"10.1180/mgm.2023.21","DOIUrl":"https://doi.org/10.1180/mgm.2023.21","url":null,"abstract":"<jats:p>\u0000 </jats:p>","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":"87 1","pages":"512 - 518"},"PeriodicalIF":2.7,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46442813","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}
引用次数: 0
MGM volume 87 issue 2 Cover and Front matter 米高梅第87卷第2期封面和封面
IF 2.7 3区 地球科学 Q2 MINERALOGY Pub Date : 2023-04-01 DOI: 10.1180/mgm.2023.20
{"title":"MGM volume 87 issue 2 Cover and Front matter","authors":"","doi":"10.1180/mgm.2023.20","DOIUrl":"https://doi.org/10.1180/mgm.2023.20","url":null,"abstract":"","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":" ","pages":"f1 - f1"},"PeriodicalIF":2.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45662792","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}
引用次数: 0
CNMNC guidelines for the nomenclature of polymorphs and polysomes CNMNC多晶型和多聚体命名指南
IF 2.7 3区 地球科学 Q2 MINERALOGY Pub Date : 2023-04-01 DOI: 10.1180/mgm.2023.13
F. Hatert, S. Mills, M. Pasero, R. Miyawaki, F. Bosi
Abstract New guidelines for the nomenclature of polymorphs and polysomes have been approved by the the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA–CNMNC). Several cases can be distinguished. (i) Polymorphs with different crystal systems are distinguished by the prefixes cubo- (cubic), hexa- (hexagonal), tetra- (tetragonal), trigo- (trigonal), ortho- (orthorhombic), clino- (monoclinic) and anortho- (triclinic). (ii) Polymorphs with different crystal systems but showing a pseudosymmetry should show the prefix ‘pseudo-’. (iii) Polymorphs with the same crystal system but different space groups are distinguished by the prefix ‘para-’. If three or more polymorphs show the same crystal system but different space groups, the space group notation may be added as a suffix, though such a nomenclature should be avoided if possible. (iv) Polymorphs with the same space group are distinguished by the prefix ‘para-’. (v) Minerals with polymorph suffixes but with different chemical compositions cannot be considered as true polymorphs, so we recommend using the prefix ‘meta-’, which indicates a close but significantly different chemical composition. (vi) Polysomatic symbols should be placed as a suffix, which indicates the number and types of modules that alternate in the structure, such as in the högbomite supergroup, or as prefixes as in the sartorite homologous series. These recommendations have to be applied for future new mineral proposals, when the authors decide to use structural prefixes or suffixes, however modifications of historical and well-established names have to pass through the CNMNC for approval. In order to be consistent with the new guidelines, 25 mineral names are now modified: domeykite-β becomes trigodomeykite; fergusonite-(Y)-β becomes clinofergusonite-(Y); fergusonite-(Ce)-β becomes clinofergusonite-(Ce); fergusonite-(Nd)-β becomes clinofergusonite-(Nd); ice-VII becomes cubo-ice; roselite-β becomes anorthoroselite; sulphur-β becomes clinosulphur; mertieite-II becomes mertieite; mertieite-I becomes pseudomertieite; uranophane-α becomes uranophane; uranophane-β becomes parauranophane; gersdorffite-P213 becomes gersdorffite; gersdorffite-Pa3 becomes paragersdorffite; gersdorffite-Pca21 becomes orthogersdorffite; betalomonosovite becomes paralomonosovite; lammerite-β becomes paralammerite; nováčekite-I becomes hydronováčekite; nováčekite-II becomes nováčekite; halloysite-7Å becomes halloysite; halloysite-10Å becomes hydrohalloysite; metauranocircite-I becomes metauranocircite; taimyrite-I becomes taimyrite; uranocircite-II becomes uranocircite; andorite IV becomes quatrandorite; and andorite VI becomes senandorite.
摘要国际矿物学协会新矿物、命名和分类委员会(IMA–CNMNC)批准了多晶型和多聚体命名的新指南。可以区分几种情况。(i) 具有不同晶体系统的多晶型通过前缀cubo-(立方)、hexa-(六边形)、tetra-(四方)、trigo-(三角)、ortho-(斜方)、斜向(单斜)和anortho-(三斜)来区分。(ii)具有不同晶体系统但显示假对称性的多晶型应显示前缀“pseudo-”。(iii)具有相同晶体系统但不同空间群的多晶型通过前缀“para-”来区分。如果三个或三个以上的多晶型显示出相同的晶体系统但不同的空间群,则可以添加空间群符号作为后缀,尽管如果可能的话应该避免使用这种命名法。(iv)具有相同空间群的多面体通过前缀“para-”来区分。(v) 具有多晶型后缀但具有不同化学成分的矿物不能被视为真正的多晶型,因此我们建议使用前缀“meta-”,这表示一种接近但明显不同的化学成分。(vi)多体符号应作为后缀,表示结构中交替出现的模的数量和类型,如在högbomite超群中,或作为前缀,如在sartorite同源序列中。当作者决定使用结构前缀或后缀时,这些建议必须适用于未来的新矿产提案,但对历史和公认名称的修改必须通过CNMNC批准。为了与新的指导方针保持一致,现在修改了25个矿物名称:domeykite-β变为trigodomeyite;铁角石-(Y)-β变为斜铁角石(Y);铁角石-(Ce)-;铁角石-(Nd)-;冰VII变成立方冰;红柱石-β变为正长辉石;硫-β变为斜硫;mertieite II变为mertieite;mertieite-I变为假mertieite;铀烷-α变为铀烷;铀烷-β变为副铀烷;gersdorffite-P213变为gersdorfite;gersdorfite-Pa3变为paragersdorfite;gersdorffite-Pca21变为正交ersdorffite;倍他洛莫诺索夫岩变为副莫诺索夫岩;lammerite-β变为副氨铁矿;nováčekite-I变为Hydranováče ekite;nováčekite II变为novčikite;halloysite-7Å变为halloysite;halloysite-10Å变为氢halloysite;偏氧化铀-Ⅰ变为偏氧化铀;太肉豆蔻酸酯-I变为太肉豆蔻酯;二氧化铀变为二氧化铀;闪长岩IV变为四闪长岩;并且蓝帘石VI变为钠帘石。
{"title":"CNMNC guidelines for the nomenclature of polymorphs and polysomes","authors":"F. Hatert, S. Mills, M. Pasero, R. Miyawaki, F. Bosi","doi":"10.1180/mgm.2023.13","DOIUrl":"https://doi.org/10.1180/mgm.2023.13","url":null,"abstract":"Abstract New guidelines for the nomenclature of polymorphs and polysomes have been approved by the the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA–CNMNC). Several cases can be distinguished. (i) Polymorphs with different crystal systems are distinguished by the prefixes cubo- (cubic), hexa- (hexagonal), tetra- (tetragonal), trigo- (trigonal), ortho- (orthorhombic), clino- (monoclinic) and anortho- (triclinic). (ii) Polymorphs with different crystal systems but showing a pseudosymmetry should show the prefix ‘pseudo-’. (iii) Polymorphs with the same crystal system but different space groups are distinguished by the prefix ‘para-’. If three or more polymorphs show the same crystal system but different space groups, the space group notation may be added as a suffix, though such a nomenclature should be avoided if possible. (iv) Polymorphs with the same space group are distinguished by the prefix ‘para-’. (v) Minerals with polymorph suffixes but with different chemical compositions cannot be considered as true polymorphs, so we recommend using the prefix ‘meta-’, which indicates a close but significantly different chemical composition. (vi) Polysomatic symbols should be placed as a suffix, which indicates the number and types of modules that alternate in the structure, such as in the högbomite supergroup, or as prefixes as in the sartorite homologous series. These recommendations have to be applied for future new mineral proposals, when the authors decide to use structural prefixes or suffixes, however modifications of historical and well-established names have to pass through the CNMNC for approval. In order to be consistent with the new guidelines, 25 mineral names are now modified: domeykite-β becomes trigodomeykite; fergusonite-(Y)-β becomes clinofergusonite-(Y); fergusonite-(Ce)-β becomes clinofergusonite-(Ce); fergusonite-(Nd)-β becomes clinofergusonite-(Nd); ice-VII becomes cubo-ice; roselite-β becomes anorthoroselite; sulphur-β becomes clinosulphur; mertieite-II becomes mertieite; mertieite-I becomes pseudomertieite; uranophane-α becomes uranophane; uranophane-β becomes parauranophane; gersdorffite-P213 becomes gersdorffite; gersdorffite-Pa3 becomes paragersdorffite; gersdorffite-Pca21 becomes orthogersdorffite; betalomonosovite becomes paralomonosovite; lammerite-β becomes paralammerite; nováčekite-I becomes hydronováčekite; nováčekite-II becomes nováčekite; halloysite-7Å becomes halloysite; halloysite-10Å becomes hydrohalloysite; metauranocircite-I becomes metauranocircite; taimyrite-I becomes taimyrite; uranocircite-II becomes uranocircite; andorite IV becomes quatrandorite; and andorite VI becomes senandorite.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":"87 1","pages":"225 - 232"},"PeriodicalIF":2.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41819884","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}
引用次数: 2
Chrysoberyl and associated beryllium minerals resulting from metamorphic overprinting of the Maršíkov–Schinderhübel III pegmatite, Czech Republic 捷克共和国Maršíkov-Schinderhübel III伟晶岩变质叠印所产生的金绿柱石和伴生铍矿物
IF 2.7 3区 地球科学 Q2 MINERALOGY Pub Date : 2023-03-30 DOI: 10.1180/mgm.2023.22
O. Rybnikova, P. Uher, M. Novak, Š. Chládek, P. Bačík, S. Kurylo, T. Vaculovič
Abstract The Maršíkov–Schinderhübel III pegmatite in the Hrubý Jeseník Mountains, Silesian Domain, Czech Republic, is a classic example of chrysoberyl-bearing LCT granitic pegmatite of beryl–columbite subtype. This thin pegmatite dyke, (up to 1 m in thickness in biotite–amphibole gneiss is characterised by symmetrical internal zoning. Tabular and prismatic chrysoberyl crystals (≤3 cm) occur typically in the intermediate albite-rich unit and rarely in the quartz core. Chrysoberyl microtextures are quite complex; their crystals are irregularly patchy, concentric or fine oscillatory zoned with large variations in Fe content (1.1–5.3 wt.% Fe2O3; ≤0.09 apfu). Chrysoberyl compositions reveal dominant Fe3+ = Al3+ and minor Fe2+ + Ti4+ = 2(Al, Fe)3+ substitution mechanisms in the octahedral sites. Tin, Ga, and V (determined by LA-ICP-MS) are characteristic trace elements incorporated in the chrysoberyl structure, whereas anomalously high Ta and Nb concentrations (thousands ppm) in chrysoberyl are probably caused by nano- to micro-inclusions of Nb–Ta oxide minerals; especially columbite–tantalite. Textural relationships between associated minerals, distinct schistosity of the pegmatite parallel to the host gneiss foliation and fragmentation of the pegmatite body into blocks as a result of superimposed stress are clear evidence for deformation and metamorphic overprinting of the pegmatite. Primary magmatic beryl, albite and muscovite were transformed to chrysoberyl, fibrolitic sillimanite, secondary quartz and muscovite during a high-temperature (~600°C) and medium-pressure (~250–500 MPa) prograde metamorphic stage under amphibolite-facies conditions. A subsequent retrograde, low-temperature (~200–500°C) and pressure (≤250 MPa) metamorphic stage resulted in the local alteration of chrysoberyl to secondary Fe,Na-rich beryl, euclase, bertrandite and late muscovite.
摘要捷克共和国西里西亚地区HrubýJeseník山脉的Maršíkov–Schinderhübel III伟晶岩是绿柱石-铌铁矿亚型含金绿宝石LCT花岗伟晶岩的经典例子。这种薄伟晶岩脉(黑云母-角闪岩片麻岩中厚度高达1 m)具有对称的内部分带特征。片状和棱柱状金绿宝石晶体(≤3 cm)通常出现在富含钠长石的中间单元中,很少出现在石英芯中。金绿柱石微结构相当复杂;它们的晶体是不规则的片状、同心或精细的振荡带,Fe含量变化很大(1.1–5.3wt.%Fe2O3;≤0.09apfu)。金绿柱石组分揭示了八面体位置中主要的Fe3+=Al3+和次要的Fe2++Ti4+=2(Al,Fe)3+取代机制。锡、Ga和V(通过LA-ICP-MS测定)是掺入金绿宝石结构中的特征微量元素,而金绿宝石中异常高的Ta和Nb浓度(数千ppm)可能是由Nb–Ta氧化物矿物的纳米到微米包裹体引起的;尤其是铌钽铁矿。伴生矿物之间的纹理关系、伟晶岩平行于主片麻岩叶理的明显片理以及伟晶岩体因叠加应力而碎裂成块,是伟晶岩变形和变质叠加的明确证据。在角闪岩相条件下,在高温(~600°C)和中压(~250–500 MPa)的进变质阶段,原生岩浆绿柱石、钠长石和白云母转变为金绿玉、纤晶硅线石、次生石英和白云母。随后的逆行、低温(~200–500°C)和压力(≤250 MPa)变质阶段导致金绿柱石局部蚀变为次生Fe、富钠绿柱石、亮氨酸、白榴石和晚期白云母。
{"title":"Chrysoberyl and associated beryllium minerals resulting from metamorphic overprinting of the Maršíkov–Schinderhübel III pegmatite, Czech Republic","authors":"O. Rybnikova, P. Uher, M. Novak, Š. Chládek, P. Bačík, S. Kurylo, T. Vaculovič","doi":"10.1180/mgm.2023.22","DOIUrl":"https://doi.org/10.1180/mgm.2023.22","url":null,"abstract":"Abstract The Maršíkov–Schinderhübel III pegmatite in the Hrubý Jeseník Mountains, Silesian Domain, Czech Republic, is a classic example of chrysoberyl-bearing LCT granitic pegmatite of beryl–columbite subtype. This thin pegmatite dyke, (up to 1 m in thickness in biotite–amphibole gneiss is characterised by symmetrical internal zoning. Tabular and prismatic chrysoberyl crystals (≤3 cm) occur typically in the intermediate albite-rich unit and rarely in the quartz core. Chrysoberyl microtextures are quite complex; their crystals are irregularly patchy, concentric or fine oscillatory zoned with large variations in Fe content (1.1–5.3 wt.% Fe2O3; ≤0.09 apfu). Chrysoberyl compositions reveal dominant Fe3+ = Al3+ and minor Fe2+ + Ti4+ = 2(Al, Fe)3+ substitution mechanisms in the octahedral sites. Tin, Ga, and V (determined by LA-ICP-MS) are characteristic trace elements incorporated in the chrysoberyl structure, whereas anomalously high Ta and Nb concentrations (thousands ppm) in chrysoberyl are probably caused by nano- to micro-inclusions of Nb–Ta oxide minerals; especially columbite–tantalite. Textural relationships between associated minerals, distinct schistosity of the pegmatite parallel to the host gneiss foliation and fragmentation of the pegmatite body into blocks as a result of superimposed stress are clear evidence for deformation and metamorphic overprinting of the pegmatite. Primary magmatic beryl, albite and muscovite were transformed to chrysoberyl, fibrolitic sillimanite, secondary quartz and muscovite during a high-temperature (~600°C) and medium-pressure (~250–500 MPa) prograde metamorphic stage under amphibolite-facies conditions. A subsequent retrograde, low-temperature (~200–500°C) and pressure (≤250 MPa) metamorphic stage resulted in the local alteration of chrysoberyl to secondary Fe,Na-rich beryl, euclase, bertrandite and late muscovite.","PeriodicalId":18618,"journal":{"name":"Mineralogical Magazine","volume":"87 1","pages":"369 - 381"},"PeriodicalIF":2.7,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43737770","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}
引用次数: 0
期刊
Mineralogical Magazine
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1