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Ankerite

About: Ankerite is a research topic. Over the lifetime, 859 publications have been published within this topic receiving 23960 citations.


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Journal ArticleDOI
TL;DR: In this paper, the reservoir diagenetic process and the petroleum charge histories of the Cretaceous Bashijiqike Formation (K1bs) in the Kuqa Depression, Tarim Basin were studied using an integrated petrographic, fluid inclusion and basin modeling approach using a suite of techniques including optical microscopy, scanning electron microscope (SEM), X-ray diffraction (XRD), fluorescence spectroscopy, microthermometry, and Laser Raman microspectroscopy.

11 citations

Journal ArticleDOI
TL;DR: The Dajiangping pyrite deposit is hosted in a carbonate-clastic rock series which is characterized by a bioreef-chert suite in its middle part as discussed by the authors.
Abstract: The Dajiangping pyrite deposit is hosted in a carbonate-clastic rock series which is characterized by a bioreef-chert suite in its middle part. Conformable lenses of various sizes constitute the orebodies which often branch transitionally into the surroundings. Syngenetic deformation fabrics can be observed in orebody No. 3. Orebody No. 4 is composed almost entirely of massive pyrite, with conspicuous hydrothermal sedimentation and bacterium-alga features. The hydrothermal sedimentation origin is also reflected by simple chemistry of the ore (predominated by quartz and pyrite), the presence of U and Th, and the REE compositions of pyrite and ankerite. The ores are rich in organic matter and the difference in organic content between the banded ores and the massive ores is mainly owing to the difference in the clastic components they contain rather than to the subsequent processes of reworking. Go/Ni ratios in the ore may reflect the temperature pattern during hydrothermal sedimentation.

11 citations

Journal Article
TL;DR: The main aim of as mentioned in this paper was to find out correlation-if there is any-among Co, Ni, As, Ag and Au concentrations in three different listwaenite sampling sets in Divirigi and Hekimhan areas.
Abstract: The main aim of this research was to find out correlation-if there is any-among Co, Ni, As, Ag and Au concentrations in three different listwaenite sampling sets in Divirigi and Hekimhan areas. The low temperature hydrothermal alteration of serpentinite bodies from the Divrigi and Kuluncak ophiolitic melanges in the Curek, Divrigi-Sivas, Guvenc and Karakuz areas, Hekimhan-Malatya, has formed two distinct types of listwaenite. Type I, is silica-carbonate listwaenite, which is dominated by silica+calcite+dolomite+ankerite±magnesite. Type II listwaenite bodies are carbonate listwaenite characterized by calcite+dolomite+ankerite ±magnesite, and lack any significant introduced silica. Correspondence-type geostatistical analysis has been thought to be the best approach to see possible correlation between Co-Ni-As-Ag and Au. Data sets are obtained from three different sampling sites, and have five attributes. Total number of individuals in three sampling sites is 96. Plots from correspondence analysis of listwaenites' data set developed using the four significant factor-based on the four significant eigenvectors.

11 citations

Journal ArticleDOI
TL;DR: In this article, it was shown that the first stage involves decomposition of ankerite to yield a periclase-wustite solid solution, (Mg,Fe)O, along with calcite and CO2, the peric lase-Wustite then reacting with CO 2 to produce magnesioferrite and calcite, and dicalcium ferrite.
Abstract: Mrssbauer spectroscopy has been used to identify the iron-containing products that are formed during the thermal decomposition of ankerite in a CO 2 atmosphere. The decomposition takes place in three stages and evidence is produced to show that the first stage involves decomposition of ankerite to yield a periclase-wustite solid solution, (Mg,Fe)O, along with calcite and CO2, the periclase-wustite then reacting with CO 2 to produce magnesioferrite (MgFe204) and CO. In the second stage the magnesioferrite and calcite react to produce periclase and dicalcium ferrite. The third stage does not involve reaction of Fe-containing phases and corresponds to the decomposition of calcite to CaO. KEYWOR9S: ankerite, decomposition, Mrssbauer spectroscopy, CO 2 atmosphere.

11 citations

Journal ArticleDOI
TL;DR: In this paper, the authors dealt with the diagenesis of steep-slope glutenites in the view of relationship between depositional facies and diagenetic alterations, including mechanical and chemical compaction, dissolution of detrital grains, and cementation by quartz overgrowths, calcite, ankerite, kaolin, illite, chlorite, and mixed-layer illite-smectite clays.
Abstract: This study deals with the diagenesis of steep-slope glutenites in the view of relationship between depositional facies and diagenetic alterations. The Lower Member of Shahejie glutenites sit along steep slopes of an intracontinental lacustrine basin, which is an important area of hydrocarbon exploration in eastern China. This kind of reservoir rocks can be divided into three major depositional environments: transgressive fan deltas, channelized sediment flows and fluxoturbidite fans. The glutenites are lithic arkose and feldspathic litharenite having an average composition of Q35F36R29, rich in metamorphic rock fragments. Diagenetic processes that have affected the glutenites include mechanical and chemical compaction, dissolution of detrital grains, and cementation by quartz overgrowths, calcite, ankerite, kaolin, illite, chlorite, and mixed-layer illite-smectite clays, as well as formation of minor zeolite, epsomite, halite, and glauberite. Considering glutenites in different depositional environments e...

11 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202332
202270
202140
202027
201946
201842