Copper isotopic composition of the silicate Earth

Liu, Sheng Ao; Huang, Junhua; Liu, Jingao; Wörner, Gerhard; Yang, Wei; Tang, Yan-Jie; Chen, Yi; Tang, Leiwen; Zheng, Jianping; Li, Shuguang

doi:10.1016/j.epsl.2015.06.061

Cited by 131 publications

(195 citation statements)

References 49 publications

(93 reference statements)

Supporting

Mentioning

183

Contrasting

Unclassified

Order By: Relevance

“…In general, the primary source of most copper deposits is a large body of magmatic rock with an isotopic composition of approximately 65 Cu‰ = 0‰ (where 65 Cu‰ = ((65Cu/ 63Cu) sample/(65Cu/63Cu) Nist 976 − 1) * 1000) [4][5][6]. However, the relatively minor variations in the isotopic composition of Cu of the dominantly magmatic source material will influence the possible values of Cu within the ore solution and the associated chalcocite.…”

Section: Types Of Chalcocite Considered and Deposits Analyzedmentioning

confidence: 99%

Origins of Chalcocite Defined by Copper Isotope Values

et al. 2018

View full text Add to dashboard Cite

The origin of chalcocite is explored through a comparison of the copper isotope values of this mineral from supergene enrichment, sedimentary copper/red bed, and high-temperature hypogene mineralization around the world. Data from the literature and the data presented here ( = 361) reveal that chalcocite from high-temperature mineralization has the tightest cluster of values of 65 Cu = 0 ± 0.6 in comparison to sedimentary copper/red bed 65 Cu = −0.9 ± 1.0 and supergene enrichment 65 Cu = +1.9 ± 1.8. Although the errors of the means overlap, large portions of the data lie in different values, allowing for distinguishing ranges for 65 Cu of <−1‰ for sedimentary copper/red bed, between −1 and +1 for high-temperature hypogene, and >+1 for supergene enrichment chalcocite. The copper isotope values of sedimentary copper/red bed and supergene enrichment chalcocite are caused by redox reactions associated with the dissolution and transport of copper, whereas the tighter range of copper isotope values for hypogene minerals is associated with processes active with equilibrium conditions.

show abstract

Section: Types Of Chalcocite Considered and Deposits Analyzedmentioning

confidence: 99%

Origins of Chalcocite Defined by Copper Isotope Values

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Cu isotopes could be further utilized as a tracer of recycled materials in the mantle and, for 629 instance, island arc material; indeed, Liu et al (2015) provide a large set of arc basalt data 630 whose range is much larger than that defined by both MORB and OIB (Fig. 6).…”

Section: Cu Contents Do Not Plot On Olivine Control Lines (Savage Et mentioning

confidence: 99%

13 The Isotope Geochemistry of Zinc and Copper

Moynier¹,

Vance²,

Fujii³

et al. 2017

Non-Traditional Stable Isotopes

View full text Add to dashboard Cite

“…These Cu-and Pbisotope studies show that the ore and associated gangue minerals have different sources of Pb, which supports evidence that the metal(loids) originate from a deep magmatic source (Saunders et al, 2008). Cu isotopes as a tool for exploring linkages between ore deposits and related Moeller et al, 2012;Liu et al, 2014Liu et al, , 2015 suggesting that aquaregia leach may not be a preferable technique when analyzing volcanic rocks.…”

Section: Introductionmentioning

confidence: 62%

“…Australia (Li et al, 2009), porphyry copper deposits (Mathur et al, 2008, Li et al (2010 and Asadi et al (2015), epithermal deposits (Saunders et al, 2015), and metallic meteorites (Luck et al, 2003) Tables Table 1-1 Modified from Liu et al, 2015. Includes Cu isotope data from previously published work as well as new data on NGB rocks from this study.…”

Section: List Of Figuresmentioning

confidence: 99%

See 1 more Smart Citation

Copper Isotope Compositions of Cenozoic Mafic-Intermediate Rocks of the Northern Great Basin and Snake River Plain (Usa)

Maynard¹

2016

Geological Society of America Abstracts With Programs

View full text Add to dashboard Cite

Mid-Miocene epithermal Au-Ag ores of the northern Great Basin USA are related to magmatism associated with the inception of the Yellowstone hotspot. The geochemical chemical connection between these ores and spatially and temporally related volcanism is not well understood, but has been suggested (Kamenov, 2007;Saunders et al., 2015). These Cu-and Pbisotope studies show that the ore and associated gangue minerals have different sources of Pb, which supports evidence that the metal(loids) originate from a deep magmatic source (Saunders et al., 2008). Cu isotopes as a tool for exploring linkages between ore deposits and related Moeller et al., 2012;Liu et al., 2014Liu et al., , 2015 suggesting that aquaregia leach may not be a preferable technique when analyzing volcanic rocks.iii

show abstract

Copper isotopic composition of the silicate Earth

Cited by 131 publications

References 49 publications

Origins of Chalcocite Defined by Copper Isotope Values

Origins of Chalcocite Defined by Copper Isotope Values

13 The Isotope Geochemistry of Zinc and Copper

Copper Isotope Compositions of Cenozoic Mafic-Intermediate Rocks of the Northern Great Basin and Snake River Plain (Usa)

Contact Info

Product

Resources

About