Ore Metals in Melt-Volatile Systems

熔融挥发系统中的矿石金属

• 批准号: 9805313
• 负责人: Philip Candela
• 金额: $ 6.82万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 2000-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9805313&HistoricalAwards=false
• 关键词: Ore; Metals; Melt; Volatile; Systems

9805313Candela/PiccoliThis continuing research program will provide new experimental data that bear on problems of mineral deposit exploration, volcanic hazards and volcanic inputs to the atmosphere. In this research endeavor, experiments will be performed on the partitioning of a number of elements, including Au (continuing ongoing melt-volatile studies), Fe, Co, Cu, Ni and Zn, between melt, brine and vapor at pressures near 100 MPa. For many of these elements no melt-volatile partitioning data exist; further, for others, their equilibria have not been investigated in the vapor + brine stability field and/or at lower pressures. Emphasis will be placed on the proper thermodynamic formulation of partitioning equilibria. Some of these experiments will be performed in the vapor-absent brine-melt field. Overall these experiments are critical to our understanding of melt-vapor-brine equilibria in subvolcanic magmatic/hydrothermal ore-forming environments. Thus the experimental data will be used to further models designed to predict the composition of volcanic volatiles and to predict fluid inclusion compositions and ore metal inventories of mineral prospects.

9805313 Canadian/Piccoli这一持续的研究计划将提供新的实验数据，这些数据与矿物存款勘探、火山灾害和火山对大气的影响等问题有关。在这项研究奋进中，实验将进行一些元素，包括Au（继续进行熔体挥发性研究），铁，钴，铜，镍和锌之间的熔体，盐水和蒸汽在压力接近100 MPa的分配。对于这些元素中的许多没有熔体挥发分配数据存在，此外，对于其他人，他们的平衡还没有被调查的蒸汽+盐水稳定性领域和/或在较低的压力。重点将放在分配平衡的适当热力学公式上。其中一些实验将在无蒸汽的盐水熔体场中进行。 总的来说，这些实验是至关重要的，我们了解熔融蒸汽盐水平衡在次火山岩浆/热液成矿环境。因此，实验数据将被用于进一步的模型设计，以预测火山挥发物的组成，并预测流体包裹体的组成和矿石金属储量的矿产前景。