CO2-fluxing collapses metal mobility in magmatic vapour
Journal Article
·
· Geochemical Perspectives Letters
- McGill Univ., Montreal, QC (Canada)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Magmatic systems host many types of ore deposits, including world-class deposits of copper and gold. Magmas are commonly an important source of metals and ore-forming fluids in these systems. In many magmatic-hydrothermal systems, low-density aqueous fluids, or vapours, are significant metal carriers. Such vapours are water-dominated shallowly, but fluxing of CO2-rich vapour exsolved from deeper magma is now recognised as ubiquitous during open-system magma degassing. Furthermore, we show that such CO2-fluxing leads to a sharp drop in element solubility, up to a factor of 10,000 for Cu, and thereby provides a highly efficient, but as yet unrecognised mechanism for metal deposition.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1255257
- Report Number(s):
- LA-UR-15-28200
- Journal Information:
- Geochemical Perspectives Letters, Vol. 824, Issue C; ISSN 2410-339X
- Publisher:
- European Association of GeochemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 14 works
Citation information provided by
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