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3D imaging of vapour and liquid inclusions from the Mole Granite, Australia, using helical fluorescence tomography

Cauzid, Jean and Philippot, Pascal and Bleuet, Pierre and Simionovici, Alexandre and Somogyi, Andrea and Golosio, Bruno (2007) 3D imaging of vapour and liquid inclusions from the Mole Granite, Australia, using helical fluorescence tomography. Spectrochimica Acta. Part B: Atomic Spectroscopy, Vol. 62 (8), p. 799-806. ISSN 0584-8547. Article.

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DOI: 10.1016/j.sab.2007.06.014

Abstract

World class Cu resources are concentrated in porphyry and epithermal ore deposits. Their formation remains partially understood, however, due to a lack of constraints on the partitioning properties of trace elements in general, and Cu in particular, between vapour and liquid phases evolved from boiling fluids at depth in the Earth's crust. Immiscible liquid and vapour fluid inclusions coexisting in a single quartz grain have been imaged in three dimensions by X-ray Fluorescence Computed Tomography (XFCT). Elemental spatial distributions confirm that Cu, and to a lesser extent As, partition into the vapour phase, whereas Mn, Fe, Zn, Br, Rb, Sr and Pb concentrate in the liquid inclusion. High resolution mapping of the vapour inclusions revealed that Cu is heterogeneously distributed at the scale of a single inclusion and is mostly concentrated as tiny daughter crystals.

Item Type:Article
ID Code:1858
Status:Published
Refereed:Yes
Uncontrolled Keywords:Fluid inclusion, helical scan, X-ray Fluorescence Computed Tomography, boiling process, Cu partitioning
Subjects:Area 02 - Scienze fisiche > FIS/07 Fisica applicata (a beni culturali, ambientali, biologia e medicina)
Divisions:001 Università di Sassari > 03 Istituti > Matematica e fisica
Publisher:Elsevier
ISSN:0584-8547
Deposited On:18 Aug 2009 10:06

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