Geology and geochronology of the Lalingzaohuo cobalt-bearing copper polymetallic skarn deposit, East Kunlun

Wu, Huai‐Ning; Niu, Xianglong; Niu, Si-Da; Wang, Yingchao; Wang, Jinhong; Wang, Zhi‐An

doi:10.1016/j.oregeorev.2023.105349

Cited by 9 publications

(3 citation statements)

References 37 publications

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“…The intense tectonicmagmatic activities resulted in large-scale Cu-Ni-Co-Au-Fe metallogenic metal mineralization in the eastern Kunlun orogen, termed as the eastern Kunlun metallogenic belt. There are more than 10 giant-/large-/medium-scale Cu (Ni-Co-Au-Fe) ore deposits occurring in the belt, including Xiarihamu, Zhongyou, Kendekeke, Galinge, Niukutou, Yemaquan, Shitoukengde, Langmuri, Dulenggou, Haisi, Xiaowolong, Shengli, Deerni [29], and Tuolugou, which are discussed in this paper. The Tuolugou Co-Au deposit, located between the Kunzhong and Kunnan faults (Figure 1b), is in the middle section of the Eastern Kunlun metallogenic belt.…”

Section: Geological Settingmentioning

confidence: 99%

Supergene Hydrous Sulfates in the Tuolugou Co-Au Deposit, Northern Qinghai–Tibet Plateau: Implications for Genetic Mechanism and Exploration

Niu,

Wu,

Zhang

et al. 2023

Minerals

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Supergene hydrous sulfate minerals form through the oxygenation and weathering of primary sulfides. In the Qinghai–Tibet Plateau region, with an alpine and dry environment, hydrous sulfate minerals oxidized from pyrite-bearing ore bodies provide important clues regarding the mineralization and environment. The Tuolugou sedimentary-exhalative (SEDEX) Co-Au deposit is located in the East Kunlun metallogenic belt of the northern Qinghai–Tibet Plateau in China. In the mining district, pyrite is the prevalent Co-hosting sulfide mineral, and is partially exposed on the surface to weathering and oxidation. Herein, we document the mineral assemblages in the supergene oxidation zone in the Tuolugou deposit, probe the genesis of supergene assemblage, and explore the implications for exploration. Three zones can be recognized in the oxidation zone of the Tuolugou deposit, including the outer zone (natrojarosite), intermediate zone (rozenite and aplowite), and inner zone (roemerite and melanterite). The mechanism of oxidation under aerobic and anaerobic conditions, as well as zoning with different oxidation degrees, are described in detail. Hydrous sulfates such as natrojarosite can be used as possible indicators of the exploration of albitite-related SEDEX deposit in this region.

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Section: Geological Settingmentioning

confidence: 99%

Supergene Hydrous Sulfates in the Tuolugou Co-Au Deposit, Northern Qinghai–Tibet Plateau: Implications for Genetic Mechanism and Exploration

Niu,

Wu,

Zhang

et al. 2023

Minerals

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“…The geotectonic unit of the study area belonged to the Qimantag ophiolite melange zone [36]. The landform of the study area was the Gobi Desert with sparse vegetation and exposed bedrocks, in which the mechanical disintegration of rocks was strong.…”

Section: Geological Setting Of Study Areamentioning

confidence: 99%

“…The types and locations of the mineral occurrences or mineralized spots in the study area are acquired from https://www.ngac.cn/(accessed on 26 January 2022) and ref. [36].…”

Section: Remote Sensing Datamentioning

confidence: 99%

Selection of Landsat-8 Operational Land Imager (OLI) Optimal Band Combinations for Mapping Alteration Zones

Yang,

Jia,

Dong

et al. 2024

Remote Sensing

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In typical alteration extraction methods, e.g., band math and principal component analysis (PCA), the bands or band combinations unitized to extract altered minerals are usually selected based on empirical models or previous rules. This results in significant differences in the alteration of mineral mapping even in the same area, thus greatly increasing the uncertainty of mineral resource prediction. In this paper, an intelligent alteration extraction approach was proposed in which an optimization algorithm, i.e., a genetic algorithm (GA), was introduced into the PCA; this approach is termed GA-PCA and is used for selecting the optimized band combinations of mineralized alterations. The proposed GA-PCA was employed to map iron oxides and hydroxyl minerals using the most commonly adopted multispectral data, i.e., Landsat-8 OLI data, at the Lalingzaohuo polymetallic deposits, China. The results showed that the spectral characteristics of GA-PCA-selected OLI band combinations in the research area were beneficial for enhancing alteration information and were more capable of suppressing the interference of vegetation information. The mapping alteration zones using the GA-PCA approach had a higher agreement with known ore spots, i.e., 25% and 33.3% in ferrous-bearing and hydroxyl-bearing deposits, compared to the classical PCA. Furthermore, two predicted targets (not shown in the classical PCA results) were precisely obtained via analyzing the GA-PCA alteration maps combined with the ore-forming geological conditions of the mine and its tectonic characteristics. This indicated that the intelligent selection of mineral alteration band combinations increased the reliability of remote sensing-based mineral exploration.

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Petrogenesis and age of granitoids associated with the Dongshan Cu polymetallic deposit, East Kunlun Orogenic Belt, NW China: Implications for the Middle to Late Triassic tectonic setting and Cu polymetallic mineralization

Chen,

Ding,

et al. 2024

Geochemistry

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Geology and geochronology of the Lalingzaohuo cobalt-bearing copper polymetallic skarn deposit, East Kunlun

Cited by 9 publications

References 37 publications

Supergene Hydrous Sulfates in the Tuolugou Co-Au Deposit, Northern Qinghai–Tibet Plateau: Implications for Genetic Mechanism and Exploration

Supergene Hydrous Sulfates in the Tuolugou Co-Au Deposit, Northern Qinghai–Tibet Plateau: Implications for Genetic Mechanism and Exploration

Selection of Landsat-8 Operational Land Imager (OLI) Optimal Band Combinations for Mapping Alteration Zones

Petrogenesis and age of granitoids associated with the Dongshan Cu polymetallic deposit, East Kunlun Orogenic Belt, NW China: Implications for the Middle to Late Triassic tectonic setting and Cu polymetallic mineralization

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