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Broken Hill矿床是世界上已知的最大的铅、锌和银矿藏。了解该矿床的成因对开发新的勘探模式至关重要。该项目将确定Curnamona省Broken Hill和Olary地区及其附近矿床中富含石榴石和辉锌矿的岩石的来源。野外测绘将用于确定这些岩石与矿化的地层和构造关系。这项工作将辅以离子探针（SHRIMP）的U-Pb年代学，以及利用电子探针和激光烧蚀电感耦合等离子体质谱分析对石榴石和柘榴石进行主要和痕量元素研究。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，加强研究和教育的基础设施。它还将支持研究生和本科生，并允许他们在学术界，工业界或政府中获得涉及矿藏的职业知识。此外，从这项研究中获得的地球化学和地质年代学数据将纳入通过美国国家科学基金会赞助的地球科学网络和目前正在开发的年代地层数据库倡议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).