The geology, mineralogy, petrography, and geochemistry of the Miocene Dursunbey coal within fluvio-lacustrine deposits, Balıkesir (Western Turkey)

Karayi̇ǧi̇t, Ali̇ İhsan; Bircan, Cüneyt; Oskay, Rıza Görkem; Türkmen, İbrahim; Querol, Xavier

doi:10.1016/j.coal.2020.103548

Cited by 32 publications

(19 citation statements)

References 111 publications

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“…The Yili Basin is one of the largest producers of Jurassic coal in China, with the Badaowan and Xishanyao formations containing the main peat accumulations and regionally widespread coal seams [97]. The occurrence and the termination of peat accumulations are governed by many factors, including regional climate, local topography, and depositional environment conditions [98,99]. In particular, paleoclimate governs the growth and reproduction of plants, hence the flourishing of peat-forming vegetation [72].…”

Section: Implication For the Peat Accumulationmentioning

confidence: 99%

“…Other factors for the preservation of peat through burial and surface drainage conditions can also reflect climate changes [24,97]. For example, a lowering of the local water table from changes in precipitation-evaporation and runoff conditions can result in an increase in degradation of the organic material in the peat regardless of the depositional setting [98,99]. summarized the relationship between the precipitation-evaporation balance and organic matter deposition and preservation as a "dry-light" and "wet-dark" model [100].…”

Section: Implication For the Peat Accumulationmentioning

confidence: 99%

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Paleoclimatic and Redox Condition Changes during Early-Middle Jurassic in the Yili Basin, Northwest China

et al. 2021

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The Jurassic was mainly a “greenhouse” period characterized by global warming and by significant peat accumulations in some continental basins. However, studies of Jurassic climate and environments have mainly focused on marine records and only a few on terrestrial sediments. Yili Basin, a mid-latitude terrestrial basin in present Northwest China, included accumulation of the important recoverable coal seams. In this study, geological data, clay mineral analysis, and palynological assemblages were employed on fine-grained samples from the Su’asugou section in southern Yili Basin. The factors (paleoclimate, depositional conditions, and paleo-vegetation) impacting peat accumulation were investigated. The results suggest that the siliciclastics may have been derived from exposed Carboniferous rocks in a continental arc environment. A warm and humid paleoclimate in the Yili basin dominated during the early-Early Jurassic deposition of the Badaowan Formation and the Middle Jurassic deposition of the Xishanyao Formation. This climate contributed to high sedimentary rates and to a high productivity of peat-forming paleo-vegetation that was preserved under dysoxic conditions. In contrast, during the late-Early Jurassic between these two formations, the Sangonghe Formation was an interval of relatively aridity that included red beds preserved under more hypoxic sedimentary conditions, and with an interruption in peat formation and preservation.

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Section: Implication For the Peat Accumulationmentioning

confidence: 99%

Section: Implication For the Peat Accumulationmentioning

confidence: 99%

Paleoclimatic and Redox Condition Changes during Early-Middle Jurassic in the Yili Basin, Northwest China

et al. 2021

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“…It occurs as isolated or clustered framboids (Figure 8A,B), as well as subhedral to euhedral crystals (Figure 8B,C), cell-fillings (Figure 8D), and massive forms in the clay minerals matrix (Figure 8E), which probably indicate syngenetic, or early diagenetic origin [8,55,61,62]. To a lesser extent, the fracture-filling pyrite, which indicates an epigenetic precipitation of hydrothermal solutions [63,64], was also observed under the SEM (Figure 8F). Sulphate minerals in the coals include jarosite and coquimbite, which were detected only in samples from Type A that were enriched in higher pyrite concentrations than others coal plies.…”

Section: Modes Of Mineral Occurrencementioning

confidence: 99%

Mineralogical Characteristics of Early Permian Paragonite-Bearing Coal (No. 3) in the Jinyuan Mine, Tengxian Coalfield, Shandong Province, Eastern China

Guo

Wang

et al. 2020

Minerals

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The Early Permian coal is of great value in the Tengxian Coalfield, Shandon Province, Eastern China. This work deals with the new data focusing on mineralogical characteristics in the Early Permian Shanxi Formation No. 3 coal from the Jinyuan Mine. The Jinyuan coal is a low ash and highly volatile A bituminous coal. Minerals in the No. 3 coal mainly comprise of kaolinite, ankerite, illite, calcite, siderite, and quartz, with varying compositions of trace amounts of pyrite, jarosite, bassanite, anatase, and rutile. According to mineral assemblage in the coal plies, three Types (A to C) can be identified in the No. 3 coal. The dominant minerals in Type A are poorly-ordered kaolinite, illite, quartz, pyrite, and jarosite. Type B is mainly composed of well-ordered kaolinite, illite, siderite, ankerite, and calcite. Type C, with just one sample (JY-3-7c), which contains high proportions of calcite (54%) and ankerite (34%). Terrigenous minerals are elevated in coal plies that typically have relatively high contents of ash yield. The formation of syngenetic pyrite was generally due to seawater, while the sulphate minerals (jarosite and coquimbite) were derived from the oxidation of pyrite. Epigenetic vein-like or fracture-fillings carbonate minerals (ankerite, calcite, and siderite), kaolinite, and pyrite, as well as authigenic quartz were derived from the influx of hydrothermal fluids during different periods, from the authigenic to epigenetic. The paragonite in the coal may have been formed by the precipitated from Na-rich hydrothermal fluids. No effects of magmatic intrusion on mineralogy were investigated in this research.

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“… 28 − 30 Strontium has both organic and inorganic associations in high-rank coals, and inorganic-associated Sr occurred as phosphates, barite, celestine, carbonates, strontianite, and clays. 28 − 35 …”

Section: Introductionmentioning

confidence: 99%

Geochemical and Mineralogical Characteristics of the Li–Sr-Enriched Coal in the Wenjiaba Mine, Guizhou, SW China

Ning

Qiao

et al. 2021

ACS Omega

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This paper reports the mineralogical and geochemical compositions of C6 coal in the Late Permian Longtan Formation of the Wenjiaba Mine, Northern Guizhou in southwest (SW) China. The geochemical and mineralogical studies are the basis for the potential recovery of critical metals. The Longtan Formation, which is one of the major coal-bearing strata in SW China, contains dozens of coal seams. C6 coal is the main mineable coal seam in the Wenjiaba Mine and the whole coalfield. Proximate and ultimate analyses, inductively coupled plasma mass spectrometry (ICP-MS) and X-ray fluorescence (XRF) spectrometry on trace and major element concentrations, and X-ray diffraction and SEM-EDS analyses were carried out. Results suggest that this anthracite coal is characterized by low ash yield and medium sulfur content. The minerals are mainly composed of clay minerals (kaolinite, chlorite, illite, and mixed-layer illite/smectite), pyrite, and carbonates. Lithium is significantly enriched in C6 coal, with an average of 124 μg/g, and it has a higher concentration in the lower portion of the coal seam than that in the upper one. Strontium is significantly enriched in samples WJB-05 and WJB-06, with concentrations of 3030 and 4580 μg/g, respectively, but it is normal or just slightly enriched in other benches of C6 coal. Additionally, Cu, Nb, and Ta are slightly enriched in the coal. Lithium, dominantly hosted by kaolinite in C6 coals, has a recovery potential. Celestine is one of the major Sr-bearing minerals in C6 coal.

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The geology, mineralogy, petrography, and geochemistry of the Miocene Dursunbey coal within fluvio-lacustrine deposits, Balıkesir (Western Turkey)

Cited by 32 publications

References 111 publications

Paleoclimatic and Redox Condition Changes during Early-Middle Jurassic in the Yili Basin, Northwest China

Paleoclimatic and Redox Condition Changes during Early-Middle Jurassic in the Yili Basin, Northwest China

Mineralogical Characteristics of Early Permian Paragonite-Bearing Coal (No. 3) in the Jinyuan Mine, Tengxian Coalfield, Shandong Province, Eastern China

Geochemical and Mineralogical Characteristics of the Li–Sr-Enriched Coal in the Wenjiaba Mine, Guizhou, SW China

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