The Genetic Relationship of Garnet- and Gahnite-Rich Rocks to Broken Hill-Type Lead-Zinc-Silver Deposits in the Curnamona Province, Australia: Implications for Exploration

澳大利亚的布罗克山矿床是世界上已知的最大的铅、锌和银的集中地。了解该矿床的成因对于开发新的勘探模式至关重要。该项目将确定库纳莫纳省布罗克山和奥拉里域中及其邻近矿床中富含石榴石和辉石的岩石的来源。野外测绘将被用来确定这些岩石的地层和构造与矿化的关系。这项工作将辅之以离子微探针(SHRIMP)U-Pb年代学，以及使用电子探针和激光烧蚀电感耦合等离子体质谱仪分析石榴石和辉石的主量元素和微量元素。该项目将通过支持美国和澳大利亚政府机构、大学和采矿业的合作来加强研究和教育的基础设施。它还将支持研究生和本科生，并允许他们为涉及学术界、行业或政府的矿藏的职业获得知识。此外，这项研究得出的地球化学和地质年代学数据将纳入通过国家科学基金会赞助的地球科学网络(GEON)和目前正在开发的年代地层数据库倡议(CHEROOS)向公众提供的数据库。

EAR-0309627SpryThe Broken Hill deposit, Australia, is the largest known concentration of lead, zinc, and silver in the world. Understanding this deposit's origin is critical for developing new exploration models. This project will determine the origin of garnet- and gahnite-rich rocks in and adjacent to deposits in the Broken Hill and Olary Domains of the Curnamona Province. Field mapping will be used to determine the stratigraphic and structural relationships of these rocks to mineralization. This work will be supplemented by ion microprobe (SHRIMP) U-Pb geochronology, and major- and trace-element studies of garnet and gahnite using electron microprobe and laser-ablation inductively coupled plasma mass spectrometer analyses. The project will enhance infrastructure for research and education by supporting collaboration of US and Australian government agencies, universities, and mining industry. It will also support graduate and undergraduate students, and allow them to acquire knowledge for careers involving mineral deposits in academia, industry or the government. Furthermore, geochemical and geochronological data derived from the study will be incorporated into databases made available to the public through the NSF-sponsored Geosciences Network (GEON) and the chronostratigraphic database initiative currently under development (CHRONOS).