Genetic environment of W skarn and Pb-Zn vein mineralization associated with the Imog granite in the Taebaeksan Mineralized District, South Korea

Im, Heonkyung; Jeong, Jun-Yeong; Shin, Dongbok

doi:10.1016/j.oregeorev.2020.103721

Cited by 9 publications

(3 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An exceptional case includes skarns that formed under low oxygen fugacity conditions like those associated with tungsten and tin mineralization, where some garnet populations are rich in Al 3+ (e.g., Zhang and Saxena 1991;Meinert 1992). However, considering recently published compositions of garnet from these reduced environments (Duan et al 2020;Im et al 2020), > 87% are correctly classified as MS, and the remaining are mainly classified as GR garnet of CS composition.…”

Section: Origin Of Main Discriminatorsmentioning

confidence: 99%

Garnet major-element composition as an indicator of host-rock type: a machine learning approach using the random forest classifier

Schönig

Eynatten

Tolosana‐Delgado

et al. 2021

Contrib Mineral Petrol

View full text Add to dashboard Cite

The major-element chemical composition of garnet provides valuable petrogenetic information, particularly in metamorphic rocks. When facing detrital garnet, information about the bulk-rock composition and mineral paragenesis of the initial garnet-bearing host-rock is absent. This prevents the application of chemical thermo-barometric techniques and calls for quantitative empirical approaches. Here we present a garnet host-rock discrimination scheme that is based on a random forest machine-learning algorithm trained on a large dataset of 13,615 chemical analyses of garnet that covers a wide variety of garnet-bearing lithologies. Considering the out-of-bag error, the scheme correctly predicts the original garnet host-rock in (i) > 95% concerning the setting, that is either mantle, metamorphic, igneous, or metasomatic; (ii) > 84% concerning the metamorphic facies, that is either blueschist/greenschist, amphibolite, granulite, or eclogite/ultrahigh-pressure; and (iii) > 93% concerning the host-rock bulk composition, that is either intermediate–felsic/metasedimentary, mafic, ultramafic, alkaline, or calc–silicate. The wide coverage of potential host rocks, the detailed prediction classes, the high discrimination rates, and the successfully tested real-case applications demonstrate that the introduced scheme overcomes many issues related to previous schemes. This highlights the potential of transferring the applied discrimination strategy to the broad range of detrital minerals beyond garnet. For easy and quick usage, a freely accessible web app is provided that guides the user in five steps from garnet composition to prediction results including data visualization.

show abstract

Section: Origin Of Main Discriminatorsmentioning

confidence: 99%

Garnet major-element composition as an indicator of host-rock type: a machine learning approach using the random forest classifier

Schönig

Eynatten

Tolosana‐Delgado

et al. 2021

Contrib Mineral Petrol

View full text Add to dashboard Cite

show abstract

“…The Imog granite, which is suggested to be a causative intrusion for the deposit, yielded K-Ar ages of 92.0-96.7 Ma on biotite (Hong, 1986;Yun, 1986). The W skarn mineralization is developed near the Imog granite while the Zn-Pb hydrothermal vein mineralization postdates in the distal part from the skarn along the NE-trending faults of the area (Im et al, 2020;. Im et al (2016) reported K-Ar ages of 83.6-97.5 Ma for sericite from the Zn-Pb ores.…”

Section: Shinyemi and Imogmentioning

confidence: 99%

Indium and gallium enrichments in zinc orebodies in the Taebaeksan region, Korea

et al. 2022

View full text Add to dashboard Cite

concentrated in relatively higher temperature, whereas Ga tends to be enriched in lower temperature. The enrichment processes of In and Ga in sphalerite might be strongly related to their complexations in the magmatic-hydrothermal fluids. High salinity in the fluid is favorable to form an In-chloride complex for mobilization and enrichment of In into sphalerite. Conversely, Ga-hydroxide complex might not be stable at relatively high temperature which could limit an economic enrichment of Ga in sphalerite in the region.

show abstract

“…An exceptional case includes skarns that formed under low oxygen fugacity conditions like those associated with tungsten and tin mineralization, where some garnet populations are rich in Al 3+ (e.g., Zhang & Saxena 1991;Meinert 1992). However, considering recently published compositions of garnet from these reduced environments (Duan et al 2020;Im et al 2020), >87 % are correctly classified as MS, and the remaining are mainly classified as GR garnet of CS composition.…”

Section: Origin Of Main Discriminatorsmentioning

confidence: 99%

Deep Subduction in Earth history: Seeking for traces in the sedimentary record

Schönig¹

View full text Add to dashboard Cite

I am extraordinarily grateful to my main supervisors Prof. Dr. Hilmar von Eynatten and Prof. Dr. Guido Meinhold. After finishing my Master's thesis, I received continuous and endless support for translating my research ideas into reality and for developing a specially tailored PhD project. Without the mentoring, guidance, patience, motivation, and professional knowledge of Hilmar and Guido, none of the lines included in this thesis would have been written down. As well as for the time we spend together in the field and the many fruitful discussions we had, I am additionally thankful for support to facilitate my future career aspirations.Many thanks to Dr. N. Keno Lünsdorf for supervising the Raman spectroscopy part of this project. Over the years, I was fortunate enough to rub off a small proportion of the in-depth understanding Keno has regarding technical details and how to tune experimental parameters for the optimal outcome. I am also grateful for several scripts Keno wrote and provided, which allowed to organize my analytical work much more efficiently.Besides my supervisors, I thank all professional colleagues for collaborations on various subprojects during my PhD studies. This includes Dr.

show abstract

Genetic environment of W skarn and Pb-Zn vein mineralization associated with the Imog granite in the Taebaeksan Mineralized District, South Korea

Cited by 9 publications

References 61 publications

Garnet major-element composition as an indicator of host-rock type: a machine learning approach using the random forest classifier

Garnet major-element composition as an indicator of host-rock type: a machine learning approach using the random forest classifier

Indium and gallium enrichments in zinc orebodies in the Taebaeksan region, Korea

Deep Subduction in Earth history: Seeking for traces in the sedimentary record

Contact Info

Product

Resources

About