The distribution of volatile and metallic elements in the Macquarie Island glasses and melt inclusions

Primary sulfur abundances and the oxidation state of sulfur in the Macquarie Island glasses and melt inclusions: implications for the sulfur budget during seafloor alteration.The distribution of volatile and metallic elements in the Macquarie Island glasses and melt inclusions: Implications for fractional crystallisation and degassing during seafloor basaltic magmatism.Macquarie Island basaltic glasses and melt inclusions represent the products of mantle melting, crystal fractionation and degassing in mid-ocean ridge environment. State-of-art analytical techniques will be employed to quantify systematics of volatile and ore-forming elements in different magmatic processes. Implications for the origin of seafloor massive sulphide deposits are expected.1. Spreadsheet 'MacIsl-glasses' contains chemical analyses of the Macquarie Island glasses rows 4-8 - radiogenic isotope ratios (Nd, Sr, Pb) - see analytical details in Kamenetsky, V.S., and Maas, R., 2002, Mantle-melt evolution (dynamic source) in the origin of a single MORB suite: a perspective from magnesian glasses of Macquarie Island: Journal of Petrology, v. 43, p. 1909-1922.rows 10-25 - major petrogenetic elements in weight %.rows 29-57 and 60-83 - trace elements in ppm (parts per million).2. Spreadsheet 'MI_in_Sp' contains chemical analyses (major elements + chlorine + sulfur) of homogenised and quenched melt inclusions in chromites from Macquarie Island picrites. The concentrations are in weight %.3. Spreadsheet 'MI_in_Sp-GEO' contains compositions (trace elements by SIMS) of homogenised and quenched melt inclusions in chromites from Macquarie Island picrite #38277rows 3-16 - major petrogenetic elements in weight %.rows 19-43 - trace elements in ppm (parts per million).The specific equipment used to analyse the data were1. Electron microprobes Cameca SX-50 (University of Tasmania) and JEOL Superprobe 8200 (Max-Planck-Institut fur Chemie, Mainz, Germany);2. Fourier-transform infrared spectroscopy (University of Tasmania);3. Laser-ablation inductively-coupled plasma mass-spectrometry (ANU, Canberra and CODES, University of Tasmania);4. Secondary ion mass-spectroscopy, Cameca 3f ion probe (Institute of Microelectronics, Russia)5. Finnigan MAT262 multicollector mass-spectrometer (La Trobe University, Melbourne)The samples were collected from Macquarie Island. The exact position of the samples is shown on Fig. 1b in Kamenetsky, V.S., Everard, J.L., Crawford, A.J., Varne, R., Eggins, S.M., and Lanyon, R., 2000, Enriched end-member of primitive MORB melts: petrology and geochemistry of glasses from Macquarie Island (SW Pacific): Journal of Petrology, v. 41, p. 411-430.The particular isotope stated was used to measure the element. Total elemental concentration is reported.The fields in this dataset are:SiO2TiO2Al2O3FeOMnOMgOCaONa2OK2OP2O5ClSCr2O3PotassiumCesiumLithiumBerylliumBoronScandiumTitaniumVandiumGalliumRubidiumStrontiumYttriumZirconiumNiobiumBariumLanthanumCeriumNeodymiumSamariumEuropiumGadoliniumDysprosiumErbiumYtterbiumLutetiumTantalumThoriumUraniumChromiumCobaltNickelCopperZincArsenicMolybdenumCadmiumTinAntimonyHafniumTantalumTungstenThalliumLeadBismuth

麦夸里岛玻璃与熔体包裹体（melt inclusions）中的初始硫含量及硫的氧化态：海底蚀变过程中硫收支的意义

麦夸里岛玻璃与熔体包裹体中挥发性元素及金属元素的分布：海底玄武质岩浆作用期间分离结晶与脱气作用的意义

麦夸里岛玄武质玻璃与熔体包裹体代表了洋中脊环境下地幔熔融、晶体分馏及脱气作用的产物。本研究将采用最先进的分析技术，量化不同岩浆过程中挥发性元素与成矿元素的系统特征，预期可为海底块状硫化物矿床的成因提供启示。

1. 电子表格'MacIsl-glasses'包含麦夸里岛玻璃的化学分析数据：第4-8行——放射性同位素比值（Nd、Sr、Pb），详见Kamenetsky, V.S.与Maas, R.（2002）《单一洋中脊玄武岩（MORB） suite成因中的地幔-熔体演化（动态源）：来自麦夸里岛镁质玻璃的视角》，《岩石学杂志》第43卷，1909-1922页；第10-25行——主要成岩元素（重量百分比）；第29-57行及60-83行——微量元素（百万分之一，ppm）。

2. 电子表格'MI_in_Sp'包含麦夸里岛苦橄岩中均一化并淬火的铬铁矿熔体包裹体的化学分析数据（主要元素+氯+硫），浓度单位为重量百分比。

3. 电子表格'MI_in_Sp-GEO'包含麦夸里岛苦橄岩样品#38277中均一化并淬火的铬铁矿熔体包裹体的成分数据（二次离子质谱仪SIMS分析的微量元素）：第3-16行——主要成岩元素（重量百分比）；第19-43行——微量元素（百万分之一，ppm）。

用于数据分析的具体设备如下：
1. 电子探针（Electron microprobes）Cameca SX-50（塔斯马尼亚大学）与JEOL Superprobe 8200（德国美因茨马克斯-普朗克化学研究所）；
2. 傅里叶变换红外光谱仪（Fourier-transform infrared spectroscopy）（塔斯马尼亚大学）；
3. 激光剥蚀电感耦合等离子体质谱仪（Laser-ablation inductively-coupled plasma mass-spectrometry）（澳大利亚国立大学堪培拉分校及塔斯马尼亚大学CODES研究中心）；
4. 二次离子质谱仪（Secondary ion mass-spectroscopy）Cameca 3f离子探针（俄罗斯微电子研究所）；
5. Finnigan MAT262多接收质谱仪（multicollector mass-spectrometer）（墨尔本拉筹伯大学）。

样品采集于麦夸里岛，其精确位置详见Kamenetsky, V.S.、Everard, J.L.、Crawford, A.J.、Varne, R.、Eggins, S.M.与Lanyon, R.（2000）《原始洋中脊玄武岩（MORB）熔体的富集端元：麦夸里岛（西南太平洋）玻璃的岩石学与地球化学》，《岩石学杂志》第41卷，411-430页的图1b。

所用同位素为文中指定的元素测量同位素，报告的是元素总浓度。

本数据集包含以下字段：
SiO2、TiO2、Al2O3、FeO、MnO、MgO、CaO、Na2O、K2O、P2O5、Cl、S、Cr2O3、Potassium、Cesium、Lithium、Beryllium、Boron、Scandium、Titanium、Vandium、Gallium、Rubidium、Strontium、Yttrium、Zirconium、Niobium、Barium、Lanthanum、Cerium、Neodymium、Samarium、Europium、Gadolinium、Dysprosium、Erbium、Ytterbium、Lutetium、Tantalum、Thorium、Uranium、Chromium、Cobalt、Nickel、Copper、Zinc、Arsenic、Molybdenum、Cadmium、Tin、Antimony、Hafnium、Tantalum、Tungsten、Thallium、Lead、Bismuth