FN Archimer Export Format
PT J
TI Hydrogen and copper isotope analysis of turquoise by SIMS: Calibration and matrix effects
BT 
AF OTHMANE, Guillaume
   HULL, Sharon
   FAYEK, Mostafa
   ROUXEL, Olivier
   GEAGEA, Majdi Lahd
   KYSER, T. Kurtis
AS 1:1;2:1;3:1;4:2;5:3;6:3;
FF 1:;2:;3:;4:PDG-REM-GM-LGM;5:;6:;
C1 Dept. of Geological Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
   IFREMER, Centre de Brest, Plouzané 29280, France
   Dept. of Geological Sciences, Queen’s University, Kingston, ON K7L 3N6, Canada
C2 UNIV MANITOBA, CANADA
   IFREMER, FRANCE
   UNIV QUEEN'S KINGSTON, CANADA
SI BREST
SE PDG-REM-GM-LGM
IN WOS Ifremer jusqu'en 2018
   copubli-int-hors-europe
IF 3.482
TC 21
UR https://archimer.ifremer.fr/doc/00239/35008/33546.pdf
LA English
DT Article
DE ;Turquoise;SIMS;Copper isotopes;Hydrogen isotopes;Matrix effects
AB The hydrogen isotope system is used extensively to provide information on the genesis of minerals (e.g., source of fluids and mechanisms of precipitation). The copper isotopic system is less well understood, but has the potential to provide valuable insight on mineral precipitation, particularly supergene Cu-rich minerals. Here we present a rapid and precise method for measuring hydrogen and copper isotopes in semi-precious gem-quality turquoise (Cu(Al,Fe3 +)6(PO4)4(OH)8 · 4H2O ) by secondary ion mass spectrometry (SIMS). The suitability of standards for instrumental mass fractionation (IMF) calibration was assessed by external precision of SIMS measurements for each standard (2-4‰ for δDIMF and 0.2-0.4‰ for δ65CuIMF). IMF in turquoise was correlated with H and Fe contents for D/H measurements and Fe content for 65Cu/63Cu measurements. Based on these correlations, IMF can be corrected to enable δD and δ65Cu analyses by SIMS with accuracies of ± 5‰ and ± 0.5‰, respectively. The precision and accuracy of SIMS thus rivals those of other mass spectrometric methods for H and Cu isotopes and demonstrates the potential of SIMS applications in identifying gemstones provenance and understanding the genesis of turquoise deposits.
PY 2015
PD FEB
SO Chemical Geology
SN 0009-2541
PU Elsevier
VL 395
UT 000349861600004
BP 41
EP 49
DI 10.1016/j.chemgeo.2014.11.024
ID 35008
ER

EF