Zinc Isotopes in Sphalerite From Base Metal Deposits in the Red Dog District, Northern Alaska

Kelley, Karen D.; Wilkinson, Jamie J.; Chapman, John; Crowther, Helen L; Weiss, Dominik

doi:10.2113/gsecongeo.104.6.767

Cited by 95 publications

(42 citation statements)

References 24 publications

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“…The measured sphalerite mineral separates show a range in δ 66 Zn values of +0.17 to +0.65‰ relative to the Lyon JMC 3-0749L zinc standard which are similar to those reported for modern submarine hydrothermal vent fluids (John et al, 2008) and SEDEX-type Pb-Zn sulfide deposits (Kelley et al, 2009). The most distinctive pattern revealed by zinc isotope data is the lateral systematic trend of increasing δ 66 Zn values from west to east (Fig.…”

Section: The Lateral Zinc Isotopic Variationsupporting

confidence: 80%

“…We can know that a Rayleigh fractionation process whereby residual fluids and late-stage precipitates evolve toward isotopically heavy compositions has been inferred to be responsible for the increase of isotope values from the early to late stage (Wilkinson et al, 2005;John et al, 2008;Kelley et al, 2009;Zhou et al, 2014). The lateral zinc isotopic variation indicates that Rayleigh fractionation is the dominant factor controlling the observed isotopic variation of sphalerite from the main orebody.…”

Section: The Lateral Zinc Isotopic Variationmentioning

confidence: 99%

“…Previous zinc isotope studies of spatial distribution on deposit scale revealed the increase of isotope values from the early to late stage (Wilkinson et al, 2005;John et al, 2008;Kelley et al, 2009;Zhou et al, 2014). However, large zinc isotopic variations were observed in the colloform texture growth banding at the hand specimen scale which indicated that the fractionation process is likely to have occurred at very short spatial scale, thereby limiting the use of Zn isotopes as exploration tool within deposits (Gagnevin et al, 2012).…”

Section: Introductionmentioning

confidence: 98%

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Lateral Variation of Zinc Isotopes in Dongshengmiao Ore Deposit, Inner Mongolia, China

Gao

Zhu

2014

Acta Geologica Sinica (Eng)

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Section: The Lateral Zinc Isotopic Variationsupporting

confidence: 80%

Section: The Lateral Zinc Isotopic Variationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Lateral Variation of Zinc Isotopes in Dongshengmiao Ore Deposit, Inner Mongolia, China

Gao

Zhu

2014

Acta Geologica Sinica (Eng)

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“…±0.07‰ and +0.53 ±0.07 ‰ (Balistrieri et al, 2009;Juillot et al, 2008), other studies have shown that the light isotopes likely became enriched in the sulfidic phases Kelley et al, 2009;Veeramani et al, 2015). Therefore, it is plausible that the cycling of zinc within sedimentary mangrove environments, coupled to well-known intense redox reactions, experience significant isotopic fractionation.…”

Section: Accepted M Manuscriptmentioning

confidence: 97%

Tracing of anthropogenic zinc sources in coastal environments using stable isotope composition

et al. 2017

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The use of zinc isotopes to trace anthropogenic sources in coastal areas has been tested in this study. We determined the stable isotopic composition of zinc in sediment cores, suspended particulate matter (SPM) and rocks collected at the Sepetiba Bay (southeastern Brazil), an estuarine lagoon heavily impacted by metallurgic activities.These isotopic signatures were compared with those from willemite ore, which represent the main mineral refined by the major industrial source of zinc. The aim was to test if this tracer system enables to identify sources and sinks of anthropogenic zinc and to reconstruct the temporal and spatial evolution of zinc contamination. can be useful to improve environmental monitoring efforts in coastal systems.

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“…In particular, Kelley et al . () observed a northward increase in δ 66 Zn values from south to north between the four Red Dog deposits (Main‐Aqqaluk‐Paalaaq‐Anarraaq), northern Alaska, which could reflect fractionation along the primary fluid‐flow path. The continued northward increase in δ 66 Zn values to Anarraaq is consistent with this being a more distal fragment of the same hydrothermal system (Kelley et al ., ).…”

Section: Ore Deposit Geologymentioning

confidence: 98%

The relationship between hydrocarbon accumulation and Mississippi Valley‐type Pb‐Zn mineralization of the Mayuan metallogenic belt, the northern Yangtze block, SW China: Evidence from ore geology and Rb‐Sr isotopic dating

et al. 2020

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The coexistence of Pb‐Zn deposits and oil/gas reservoirs demonstrates that a close genetic connection exists between them. The spatiotemporal relationship between Pb‐Zn mineralization and hydrocarbon accumulation is the key to understanding this genetic connection. The Mayuan large‐scale Pb‐Zn metallogenic belt is composed of a number of Mississippi Valley‐type (MVT) Pb‐Zn deposits that were recently discovered on the northern margin of the Yangtze Block, China. It is hosted in the dolostone of the Sinian (Ediacaran) Dengying Formation (Z2dn). In addition to the abundant bitumen in the Mayuan Pb‐Zn metallogenic belt, the paleo‐oil reservoir and the MVT Pb‐Zn deposit overlap in space. In this study, two precise ages of 468.3 ± 3.8 Ma and 206.0 ± 6.5 Ma were obtained via the Rb‐Sr isotopic dating of galena and sphalerite from the Mayuan Pb‐Zn metallogenic belt, respectively. The early metallogenic age of 468.3 ± 3.8 Ma is similar to the previously published age of 486 ± 12 Ma. The age of 206.0 ± 6.5 Ma is consistent with the age of the metallogenic event that occurred at 200 Ma in the Upper Yangtze Pb–Zn metallogenic province of the Sichuan‐Yunnan‐Guizhou polymetallic zone, which is located on the southwest margin of the Sichuan Basin, suggesting that the metallogenic effects of this period were regional in scale in the peripheral areas of the Sichuan Basin. Previous studies have shown that two periods of hydrocarbon accumulation occurred in the oil/gas reservoir that coexists with the Pb‐Zn deposits in the study area. The Pb‐Zn mineralization at 468.3 ± 3.8 Ma occurred during the first period of hydrocarbon accumulation, while the second mineralization at 206.0 ± 6.5 Ma occurred during the transformation of the paleo‐oil reservoir to a paleogas reservoir. The spatial relationship between the paleo‐oil/‐gas reservoir and the MVT Pb‐Zn deposits and the temporal relationship between mineralization and hydrocarbon accumulation show that a close genetic relationship exists between the MVT Pb‐Zn mineralization and hydrocarbon accumulation. Analysis of metals in the source rocks forming the paleo‐oil/‐gas reservoirs show that source rocks which formed paleo‐oil/‐gas reservoirs may have provided metals for Pb‐Zn mineralization. Both the paleo‐oil/‐gas reservoirs and Pb‐Zn mineralizing fluids had the same origin.

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Zinc Isotopes in Sphalerite From Base Metal Deposits in the Red Dog District, Northern Alaska

Cited by 95 publications

References 24 publications

Lateral Variation of Zinc Isotopes in Dongshengmiao Ore Deposit, Inner Mongolia, China

Lateral Variation of Zinc Isotopes in Dongshengmiao Ore Deposit, Inner Mongolia, China

Tracing of anthropogenic zinc sources in coastal environments using stable isotope composition

The relationship between hydrocarbon accumulation and Mississippi Valley‐type Pb‐Zn mineralization of the Mayuan metallogenic belt, the northern Yangtze block, SW China: Evidence from ore geology and Rb‐Sr isotopic dating

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