Results 31 to 40 of about 57,014 (308)

Surface Electrical Behaviors of Apatite, Dolomite, Quartz, and Phosphate Ore

Frontiers in Materials, 2020
The phosphate ore flotation is achieved through the surface electrical behavior difference among apatite, dolomite and quartz, but it is usually affected by the dissolved ions from pulp, especially Ca2+ and Mg2+. The zeta potentials of apatite, dolomite,
Fang Zhou, Qi Liu, Xu Liu, Wanchun Li, Jian Feng, Ruían Chi   +5 more
semanticscholar   +1 more source

Characteristics and genesis analysis of dolomite in Lower Ordovician Penglaiba Formation in Tahe area

Shiyou shiyan dizhi
The dolomite of the Lower Ordovician Penglaiba Formation is an important successor field for oil and gas exploration in the Tahe oilfield. Clarifying the sedimentary characteristics and genetic mechanisms of the dolomite is of great significance for oil ...
Qinqi XU, Jun PENG, Chengqi HE, Jingang XIA, Rui LIU, Wei HUANG   +5 more
doaj   +1 more source

Experimental testing and numerical simulations of blast-induced fracture of dolomite rock

Meccanica (Milano. Print), 2020
In this paper, the Johnson-Holmquist II (JH-2) model with parameters for a dolomite rock was used for simulating rock fragmentation. The numerical simulations were followed by experimental tests.
P. Baranowski, Ł. Mazurkiewicz, J. Małachowski, Mateusz Pytlik   +3 more
semanticscholar   +1 more source

Biomineralization of primary carbonate cements: a new biosignature in the fossil record from the Anisian of Southern Italy

Lethaia, EarlyView., 2021
Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido, Matteo Sposato, Giuseppe Palladino, Alessandro Vescogni, Domenico Miriello   +4 more
wiley   +1 more source

Pore Types and Dolomite Reservoir Genesis of the Fifth Member of the Ordovician Majiagou Formation in the Central and Eastern Ordos Basin

Applied Sciences
The Ordovician dolomite in the Ordos Basin is an important natural gas reservoir. Exploring dolomite genesis and the factors influencing reservoir characteristics is essential for deep carbonate rock exploration.
Shilei Chen, Rong Dai, Shunshe Luo
doaj   +1 more source

Fracture dolomite as an archive of continental palaeo-environmental conditions

Communications Earth & Environment, 2020
The origin of Quaternary dolomites in continental environments (e.g. karst and lakes) is barely constrained compared to marine dolomites in sedimentary records. Here we present a study of dolomite and aragonite formations infilling young fractures of the
A. Baldermann, F. Mittermayr, S. Bernasconi, M. Dietzel, C. Grengg, D. Hippler, T. Kluge, A. Leis, Ke Lin, Xianfeng Wang, Andrea Zünterl, R. Boch   +11 more
semanticscholar   +1 more source

Petrology and geochemical characteristics of dolomite in the Middle Permian Maoukou Formation, central Sichuan

Petroleum Research, 2017
Dolomites of the Maokou Formation in the central Sichuan were mainly developed in the middle-upper part of Member 2 and the lower part of Member 3 of Maokou Formation, it could be divided into fine-to medium-grained calcareous dolomite, fine-to medium ...
Jianqiang Liu, Haofu Zheng, Bo Liu, Hongguang Liu, Kaibo Shi, Rongtao Guo, Xuefeng Zhang   +6 more
doaj   +1 more source

Effect of Dolomite Addition on The Performance of Palm Oil Mill Fly Ash for Methylene Blue Adsorption

Indonesian Journal of Chemical Analysis, 2023
The use of palm oil mill fly ash (FA) as a low-cost adsorbent is one of the solutions for handling FA waste. In this study, the addition of dolomite is expected to improve the adsorbent performance. The aim of this study was to investigate the optimum FA-
Elda Pelita, Rita Youfa, Desniorita, Anang Baharuddin Sahaq , Miftahurrahmah, Resi Levi Permadani, Jerry   +6 more
doaj   +1 more source

Nucleation and stabilization of Eocene dolomite in evaporative lacustrine deposits from central Tibetan plateau

Sedimentology, 2020
In past decades, the formation of dolomite at low temperature has been widely studied in both natural systems and cultured experiments, yet the mechanism(s) involved in the nucleation and precipitation of dolomite remains unresolved.
Yixiong Wen, M. Sánchez‐Román, Yalin Li, Chengshan Wang, Zhongpeng Han, Laiming Zhang, Yuanhong Gao   +6 more
semanticscholar   +1 more source

Experimental and constitutive modeling investigations on marble in Jinping Underground Laboratory

Deep Underground Science and Engineering, EarlyView.
The objective of this study is to reveal the underlying mechanisms behind the brittle‐ductile transition of the marble through a combination of experimental research and constitutive modeling. A series of triaxial compression and triaxial cyclic loading tests are conducted.
Susheng Wang, Qiang Zhang, Hao Luo, Zhinan Lin   +3 more
wiley   +1 more source