Geochemistry of Se and Te in arsenian pyrite; new evidence for the role of Se and Te hydrothermal complexes in carlin and epithermal-type deposits

Stephen E. Kesler; Artur P. Deditius; Stephen Chryssoulis

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Geochemistry of Se and Te in arsenian pyrite; new evidence for the role of Se and Te hydrothermal complexes in carlin and epithermal-type deposits

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Geochemistry of Se and Te in arsenian pyrite; new evidence for the role of Se and Te hydrothermal complexes in carlin and epithermal-type deposits

Stephen E. Kesler, Artur P. Deditius and Stephen Chryssoulis

Opas - Geologian Tutkimuskeskus, Vol.53, pp.57-59

Field workshop of IGCP 486, Workshop (Espoo, Finland, 26/08/2007–31/08/2007)

2007

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Abstract

arsenic

carlin-type deposits

Economic geology, geology of ore deposits

epithermal processes

geochemical controls

geochemistry

Geochemistry of rocks, soils, and sediments

gold

gold ores

hydrothermal conditions

IGCP

metal ores

metals

mineral deposits, genesis

ore-forming fluids

pyrite

selenium

silver

sulfides

tellurium

trace elements

Analyses by electron microprobe and secondary-ion mass spectrometry provide information on the relation of Se and Te to other trace elements in arsenian pyrite from Carlin-type and low-sulfidation type epithermal deposits. Correlations between abundances of Se and Te and the other trace elements probably reflect similar behavior in hydrothermal solution and possibly the presence of as yet unknown complexes. Strongest correlations are seen between Te and both Au and Ag in Carlintype deposits and between Te and Ag in epithermal-type deposits; correlations of Au and Ag with Se are uniformly poor. Although correlations with Te are strong, crossplots indicate low Te:Au and Te:Ag ratios of ~0.1 or less, suggesting that Te was not sufficiently abundant to complex either Au or Ag. These results suggest that Se complexes are not present and that Te complexes, though present, are of secondary importance as an agent of metal transport.

Details

Title: Geochemistry of Se and Te in arsenian pyrite; new evidence for the role of Se and Te hydrothermal complexes in carlin and epithermal-type deposits
Authors/Creators: Stephen E. Kesler - University of Michigan
Artur P. Deditius
Stephen Chryssoulis
Contributors: Kari K. Kojonen (Editor) - Geological Survey of Finland
Nigel J. Cook (Editor)
V. Juhani Ojala (Editor)
Publication Details: Opas - Geologian Tutkimuskeskus, Vol.53, pp.57-59
Event: Field workshop of IGCP 486, Workshop (Espoo, Finland, 26/08/2007–31/08/2007)
Publisher: Geologian Tutkimuskeskus
Identifiers: 991005560451907891
Murdoch Affiliation: Centre for Water, Energy and Waste; School of Mathematics, Statistics, Chemistry and Physics
Language: English
Resource Type: Conference proceeding
Note: The workshop consisted of three days of field excursions to Au-Ag-Te-Se ore deposits and mines in southwestern Finland and two days of scientific sessions at GTK

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