Partitioning of trace elements in co-crystallized sphalerite–galena–chalcopyrite hydrothermal ores

Partitioning of trace elements in co-crystallized sphalerite–galena–chalcopyrite hydrothermal... There is an abundance of published trace element data for sphalerite, galena and chalcopyrite in natural systems, yet for a co-crystallized assemblage comprising these base metal sulphides, there is no detailed understanding of the preferred host of many trace elements. Laser-ablation inductively-coupled plasma mass spectrometry trace element maps and spot analyses were generated on 17 assemblages containing co-crystallized sphalerite and/or galena and/or chalcopyrite from 9 different ore deposits. These deposits are representative of different ore types, geologic environments and physiochemical conditions of ore formation, as well as superimposed syn-metamorphic remobilisation and recrystallization. The primary factors that control the preferred base metal sulphide host of Mn, Fe, Co, Cu, Zn, Ga, As, Se, Ag, Cd, In, Sb, Te, Tl and Bi are element oxidation state, ionic radius of the substituting element, element availability and the maximum trace element budget that a given sulphide mineral can accommodate. Temperature, pressure, redox conditions at time of crystallization and metal source, do not generally appear to influence the preferred base metal sulphide host of all the trace elements. Exceptions are Ga, In and Sn recrystallized at high metamorphic grades, when the preferred host of Ga and Sn usually becomes chalcopyrite. In more typical lower temperature ores, the preferred host of Ga is sphalerite. Indium concentrations also increase in chalcopyrite during recrystallization. At lower temperatures the partitioning behaviour of Sn remains poorly constrained and shows little predictable pattern among the data here. The results obtained may be used as a tool to assess co-crystallization. If trace element distributions in a given base metal sulphide assemblage match those reported here, and assuming those distributions have not been significantly altered post (re-) crystallization, then it may be suggestive of a co-crystallized assemblage. Such information provides a foundation for novel attempts to develop trace element-in-sulphide geothermometers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ore Geology Reviews Elsevier

Partitioning of trace elements in co-crystallized sphalerite–galena–chalcopyrite hydrothermal ores

Loading next page...
 
/lp/elsevier/partitioning-of-trace-elements-in-co-crystallized-sphalerite-galena-0z0N4YuXHt
Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0169-1368
eISSN
1872-7360
D.O.I.
10.1016/j.oregeorev.2016.02.009
Publisher site
See Article on Publisher Site

Abstract

There is an abundance of published trace element data for sphalerite, galena and chalcopyrite in natural systems, yet for a co-crystallized assemblage comprising these base metal sulphides, there is no detailed understanding of the preferred host of many trace elements. Laser-ablation inductively-coupled plasma mass spectrometry trace element maps and spot analyses were generated on 17 assemblages containing co-crystallized sphalerite and/or galena and/or chalcopyrite from 9 different ore deposits. These deposits are representative of different ore types, geologic environments and physiochemical conditions of ore formation, as well as superimposed syn-metamorphic remobilisation and recrystallization. The primary factors that control the preferred base metal sulphide host of Mn, Fe, Co, Cu, Zn, Ga, As, Se, Ag, Cd, In, Sb, Te, Tl and Bi are element oxidation state, ionic radius of the substituting element, element availability and the maximum trace element budget that a given sulphide mineral can accommodate. Temperature, pressure, redox conditions at time of crystallization and metal source, do not generally appear to influence the preferred base metal sulphide host of all the trace elements. Exceptions are Ga, In and Sn recrystallized at high metamorphic grades, when the preferred host of Ga and Sn usually becomes chalcopyrite. In more typical lower temperature ores, the preferred host of Ga is sphalerite. Indium concentrations also increase in chalcopyrite during recrystallization. At lower temperatures the partitioning behaviour of Sn remains poorly constrained and shows little predictable pattern among the data here. The results obtained may be used as a tool to assess co-crystallization. If trace element distributions in a given base metal sulphide assemblage match those reported here, and assuming those distributions have not been significantly altered post (re-) crystallization, then it may be suggestive of a co-crystallized assemblage. Such information provides a foundation for novel attempts to develop trace element-in-sulphide geothermometers.

Journal

Ore Geology ReviewsElsevier

Published: Sep 1, 2016

References

  • Trace element heterogeneity in molybdenite fingerprints stages of mineralization
    Ciobanu, C.L.; Cook, N.J.; Kelson, C.R.; Guerin, R.; Kalleske, N.; Danyushevsky, L.
  • Indium mineralisation in A-type granites in southeastern Finland: insights into mineralogy and partitioning between coexisting minerals
    Cook, N.J.; Sundblad, K.; Valkama, M.; Nygård, R.; Ciobanu, C.L.; Danyushevsky, L.
  • Ag-rich Tetrahedrite in the El Zancudo Deposit, Colombia: Occurrence, Chemical Compositions and Genetic Temperatures
    Gallego Hernández, A.N.; Akasaka, M.
  • Trace and minor elements in galena: A reconnaissance LA-ICP-MS study
    George, L.; Cook, N.J.; Ciobanu, C.L.; Wade, B.
  • Trace and minor elements in sphalerite from metamorphosed sulphide deposits
    Lockington, J.; Cook, N.J.; Ciobanu, C.L.
  • Subduction, slab detachment and mineralization: the Neogene in the Apuseni Mountains and Carpathians
    Neubauer, F.; Lips, A.; Kouzmanov, K.; Lexa, J.; Ivascanu, P.
  • Copper oxidation state in chalcopyrite: Mixed Cu d9 d10 characteristics
    Pearce, C.I.; Pattrick, R.A.D.; Vaughan, D.J.; Henderson, C.M.B.; Van der Laan, G.
  • Mount Isa lead-zinc orebodies: replacement lodes in a zoned syndeformational copper-lead-zinc system?
    Perkins, W.
  • A first principles study of coupled substitution in galena
    Renock, D.; Becker, U.
  • Proterozoic low-pressure/high-temperature metamorphism and an anticlockwise P–T–t path for the Hazeldene area, Mount Isa Inlier, Queensland, Australia
    Rubenach, M.J.
  • Did the giant Broken Hill (Australia) Zn–Pb–Ag deposit melt?
    Spry, P.G.; Plimer, I.R.; Teale, G.S.
  • Surface oxidation of chalcopyrite (CuFeS2) under ambient atmospheric and aqueous (pH 2–10) conditions: Cu, Fe L-and O K-edge X-ray spectroscopy
    Todd, E.; Sherman, D.; Purton, J.
  • Trace and minor elements in sphalerite from base metal deposits in South China: a LA-ICPMS study
    Ye, L.; Cook, N.J.; Ciobanu, C.L.; Yuping, L.; Qian, Z.; Tiegeng, L.; Wei, G.; Yulong, Y.; Danyushevskiy, L.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial