Ciobanu, Christiana - University of Adelaide - School of Chemical Engineering

研究领域

Central to my present research are ore minerals and how they reveal ore-forming processes. Like rock-forming silicates, ore minerals also record the history of geological events. This can be expressed in many ways: textures, distribution of trace/minor elements, crystal-structural modifications, and order-disorder state at the lattice-scale are those that I am most familiar with. Such aspects are central to understanding processes such as self-patterning and mineral replacement via dissolution-reprecipitation reactions inherent to geologic environments. Studies of trace elements in ore minerals by in situ techniques (e.g., LA-ICPMS) and their nanoscale characterisation (by FIB/HR-TEM) are new, unexplored fields of research that have excellent potential in defining alternatives to conventional views on ore-forming processes and methods of studying them. Contributions to economic geology/ore petrology include: geodynamic correlations and geochronology, skarn deposits: orefield zonation, key textures in skarns.

近期论文

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Cook, N.J., Etschmann, B., Ciobanu, C.L., Howard, D., Williams, T., Rae, N., Pring, A., Geraki, K., Chen, G.R. and Brugger, J. Synchrotron XANES study of a Ge-(Fe)-bearing sphalerite. Minerals 5, 117-132. George, L., Cook, N.J. and Ciobanu, C.L. (2015): Trace and minor elements in galena: A reconnaissance LA-ICP-MS study. American Mineralogist 100, 548-569. Lockington, J., Cook, N.J. and Ciobanu, C.L. (2014): Trace and minor elements in sphalerite from metamorphosed sulphide deposits. Mineralogy and Petrology 108, 873-890. Kontonikas-Charos, A., Ciobanu, C.L. and Cook, N.J. (2014): Albitization and redistribution of REE and Y in IOCG systems: Insights from Moonta-Wallaroo, Yorke Peninsula, South Australia. Lithos 208-209, 178-201. Ciobanu, C.L., Brugger, J., Cook, N.J., Mills, S., Elliot, P., Damian, G. and Damian, F. (2014): Gra?ianite, MnBi2S4, a new mineral from the Bǎi?a Bihor skarn, Romania. American Mineralogist 99, 1163-1170.) Ismail, R., Ciobanu, C.L., Cook, N.J., Schmidt Mumm, A., Wade, B., Giles, D. and Teale, G.S. (2014): Rare Earths and other trace elements in minerals from skarn assemblages, Hillside iron oxide-copper-gold deposit, Yorke Peninsula, South Australia. Lithos 184-187, 456-477. Ingham, E.S., Cook, N.J., Cliff, J., Ciobanu, C.L. and Huddleston, A. (2014): A combined chemical, isotopic and microstructural study of pyrite from roll-front uranium deposits, Lake Eyre Basin, South Australia. Geochimica et Cosmochimica Acta 125, 440-465. Sharrad, K.A., McKinnon-Matthews, J., Cook, N.J., Ciobanu, C.L. and Hand, M. (2014): The Basil Cu–Co deposit, Eastern Arunta Region, Northern Territory, Australia: A metamorphosed volcanic-hosted massive sulphide deposit. Ore Geology Reviews 56, 141-158. Ciobanu, C.L., Wade, B., Cook, N.J., Schmidt Mumm, A. and Giles, D. (2013): Uranium-bearing hematite from the Olympic Dam Cu-U-Au deposit, South Australia; a geochemical tracer and reconnaissance Pb-Pb geochronometer. Precambrian Research 238, 129-147. Cook, N.J., Ciobanu, C.L., O’Rielly, D., Wilson, K., Das, K and Wade, B. (2013): Mineral chemistry and element partitioning in hydrothermal Rare Earth Element (REE) mineralization, Browns Ranges, Western Australia. Lithos 172–173, 192–213. (60%) Ciobanu, C.L., Cook, N.J., Kelson, C.R., Guerin, R., Kalleske, N. and Danyushevsky, L. (2013) Trace element heterogeneity in molybdenite fingerprints stages of mineralization. Chemical Geology 347, 175–189.) Cook, N.J., Ciobanu, C.L., Meria, D., Silcock, D. and Wade, B. (2013): Arsenopyrite-pyrite association in an orogenic gold ore: tracing mineralization history from textures and trace elements. Economic Geology 108, 1273–1283. Winderbaum, L., Ciobanu, C.L., Cook, N.J., Paul, M., Metcalfe, A. and Gilbert, S. (2012): Multivariate Analysis of an LA-ICP-MS Trace Element Dataset for Pyrite. Mathematical Geosciences 44, 823-842. Ciobanu, C.L., Cook, N.J., Utsunomiya, S., Kogagwa, M., Green, L., Gilbert, S. and Wade, B. (2012): Gold-telluride nanoparticles revealed in arsenic-free pyrite. American Mineralogist 97, 1515-1518. Zammit, C., Cook, N.J., Brugger, J., Ciobanu, C.L. and Reith, F. (2012): The future of biotechnology in gold exploration and processing. Minerals Engineering 32, 45-53. Ye, L., Cook, N.J., Liu, T.G., Ciobanu, C.L., Gao, W. and Yang, Y.L. (2012): The Niujiaotang Cd-rich zinc deposit, Duyun, Guizhou Province, Southwest China: Ore genesis and mechanisms of cadmium concentration. Mineralium Deposita 47, 683-700.) Cook, N.J., Ciobanu, C.L., Brugger, J., Etschmann, B., Howard, D.J., de Jonge, M., Ryan, C.G. and Paterson, D. (2012): Determination of the oxidation state of Cu in substituted Cu-In-Fe-bearing sphalerite via μ-XANES spectroscopy. American Mineralogist 97, 476–479. Ye, L., Cook, N.J., Ciobanu, C.L., Liu, Y.P., Zhang, Q., Gao, W., Yang, Y.L. and Danyushevsky, L.V. (2011): Trace and minor elements in sphalerite from base metal deposits in South China: a LA-ICPMS study. Ore Geology Reviews 39, 188–217. Cook, N.J., Ciobanu, C.L. and Williams, T. (2011): The mineralogy and mineral chemistry of indium in sulphide deposits and implications for mineral processing. Hydrometallurgy 108, 226–228. Reich, M., Hough, R.M., Deditius, A., Utsunomiya, S., Ciobanu, C.L. and Cook, N.J. (2011): Nanogeoscience in ore systems research: principles, methods, and applications. Introduction and preface to the special issue. Ore Geology Reviews 42, 1-5.