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Journal articles on the topic 'Primary Deposits'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Arenque, L. A., J. A. Gabo-Ratio, B. D. Payot, J. T. Guzman, and K. Yonezu. "Mineralogy and geochemistry of the Paranas karst bauxite deposit of Samar Island, Philippines." IOP Conference Series: Earth and Environmental Science 1517, no. 1 (2025): 012040. https://doi.org/10.1088/1755-1315/1517/1/012040.

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Abstract Bauxite deposits form due to the intense weathering of alumino-silicate-rich rocks in regions with tropical to humid climates. Bauxite deposits are being extracted for their economic significance as primary sources of aluminum and have recently been investigated for their enrichment in Rare Earth Elements (REE). In the Philippines, the bauxite deposit in Paranas in Samar Island is one of the most extensive deposits within the Samar Bauxite Mineral Reservation. The Paranas karst bauxite deposit is directly deposited in the depressions of the limestone in the study area. Compared to oth

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JZ Yin. "Temporal and spatial distribution and genesis of primary indium deposits around the world." Naturalis Scientias 01, no. 02 (2024): 167–80. http://dx.doi.org/10.62252/nss.2024.1012.

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Because rare dispersed elements including indium play an increasingly extensive and indispensable role in the field of modern high technology, the exploration, development and research of its resources are in full swing. The abundance of indium in the earth's crust is extremely low, and its original independent deposits have not been found so far. Indium is mainly parasitic in bulk non-ferrous metal deposits in the form of associated by-products. Because of its origin, the genetic types of indium deposits are as diverse as those non-ferrous metal deposits it parasitizes. The distribution of in

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3

Lopes, Adriana Araújo Castro, and Márcia Abrahão Moura. "The Tocantinzinho Paleoproterozoic Porphyry-Style Gold Deposit, Tapajós Mineral Province (Brazil): Geology, Petrology and Fluid Inclusion Evidence for Ore-Forming Processes." Minerals 9, no. 1 (2019): 29. http://dx.doi.org/10.3390/min9010029.

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The Tocantinzinho gold deposit, located in the Tapajós Mineral Province, Amazonia, Brazil, is considered the largest gold deposit in the region. It is a stockwork-disseminated gold deposit, hosted in a 1982 ± 8 Ma hydrothermalized monzogranite of the Creporizão Intrusive Suite, with petrographic and geochemical characteristics of volcanic arc to post-collisional granites. Gold is mainly associated with phyllic alteration. Primary fluid inclusions trapped in the mineralization stages are H2O–NaCl and unsaturated and homogenize either to the vapor or to the liquid with Th(t) of 300–430 °C, salin

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Ozdemir, Ugur, Mustafa Sozeri, Tayfun Findik, and Volkan Kilicli. "Effect of buttering on the wear behavior of the SMA welded hardfacing layer in a low-carbon steel." Materials Testing 65, no. 4 (2023): 494–504. http://dx.doi.org/10.1515/mt-2022-0438.

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Abstract In this study, the effect of the buttering layer (18.5% Cr + 9% Ni) and the chemical composition of the hardfacing filler materials on the microstructure and wear behavior of the structural steel (S355JR) was investigated. The chromium-based hardfacing alloys deposited by shielded metal arc welding (SMAW) have also been investigated to establish the relationship between microstructures and wear properties. The microstructure of hardfacing deposits has been examined by using scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. A linear reciprocating abrasive wear te

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HISTON, KATHLEEN. "Primary deposits in nautiloid cephalopods." Lethaia 26, no. 2 (1993): 179–81. http://dx.doi.org/10.1111/j.1502-3931.1993.tb01811.x.

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6

Kaminsky, Felix V., A. A. Feldman, V. A. Varlamov, et al. "Prognostication of primary diamond deposits." Journal of Geochemical Exploration 53, no. 1-3 (1995): 167–82. http://dx.doi.org/10.1016/0375-6742(94)00019-8.

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7

Bertau, Martin, and Gunther Martin. "Integrated Direct Carbonation Process for Lithium Recovery from Primary and Secondary Resources." Materials Science Forum 959 (June 2019): 69–73. http://dx.doi.org/10.4028/www.scientific.net/msf.959.69.

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In view of the increasing demand for lithium and the unequal distribution of lithium deposits worldwide, local deposits such as the zinnwaldite deposit at Zinnwald/Cínovec are increasingly coming into focus. It could be shown that especially the direct carbonation process with supercritical CO2 represents a promising approach for a technical implementation due to the low chemical consumption as well as the high selectivity for lithium. Moreover, besides primary ore (zinnwaldite), the method is also suitable for recovering lithium carbonate from black mass, the lithium-containing fraction from

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8

Yin, Jian Zhao. "Geology of the Primary Selenium Deposits in Mainland China." Naturalis Scientias 02, no. 01 (2025): 364–76. https://doi.org/10.62252/nss.2025.1025.

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Selenium deposits in mainland China are distributed across various tectonic units, including the North China Platform, Yangtze Platform, South China Geosyncline, Qinghai-Tibet Plateau, Tarim Terrane, and Tianshan and Qilianshan tectonic belts. These deposits exhibit a diverse geological background, with varying genetic types and geochemical properties. China's selenium deposits include both independent and associated/symbiotic deposits. They are classified into sedimentary, magmatic, skarn, hydrothermal, and volcanic types. Selenium deposits in the Yangtze Platform are mostly sedimentary, whil

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Li, Jinwei, Lichuan Pan, Yitong Guo, and Shunfu Lu. "Multi-Isotopic Compositions of Ores from the Shizishan Cu–Au–Mo Orefield in the Tongling Region, Eastern China: Implications for Ore Genesis." Minerals 13, no. 7 (2023): 985. http://dx.doi.org/10.3390/min13070985.

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The Middle–Lower Yangtze Metallogenic Belt (MLYMB) hosts abundant porphyry–skarn–stratabound-type Cu–Au–Mo deposits. Despite extensive research, the origin of the stratabound-type deposits, which developed at the unconformity interface between the Devonian and Carboniferous strata in the MLYMB, remains controversial. The primary debate centers on whether these deposits are the result of Carboniferous sedimentary exhalative mineralization or Mesozoic magmatic–hydrothermal mineralization. In this paper, we examine three representative deposits in the Shizishan orefield: the Chaoshan skarn-type A

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10

Jeon, Soon-Hyeok, Hee-Sang Shim, Ji-Min Lee, Jeoh Han, and Do Haeng Hur. "Simulation of Porous Magnetite Deposits on Steam Generator Tubes in Circulating Water at 270 °C." Crystals 10, no. 9 (2020): 729. http://dx.doi.org/10.3390/cryst10090729.

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In the secondary side of pressurized water reactors (PWRs), the main corrosion product accumulated on the steam generator (SG) tubes is magnetite, which has a porous structure. The purpose of this work is to simulate the porous magnetite deposited to the SG tubes using a loop system. We newly developed a circulating loop system for a porous magnetite deposition test. A test section was designed as a single hydraulic flow channel, and a cartridge heater was fabricated and mounted into a commercial SG tube to provide an equal heating source for the primary water. After the deposition test, the s

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11

Antonijevic, Ivan, and Predrag Mijatovic. "The copper deposits of Bor, eastern Serbia: Geology and origin of the deposits." Annales g?ologiques de la Peninsule balkanique, no. 75 (2014): 59–74. http://dx.doi.org/10.2298/gabp1475059a.

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The copper deposits of Bor, volcanic activities in the area and relationship of minerals through time are presented by formations within the Cenomanian-Turonian range. Geology and age of the deposits are given in the geological-time order based on superposition of the Timok mineral-ore Formation and the underlying (Cenomanian) and fossiliferous overlying (Senonian) strata. The concept of dating Bor deposits the Turonian is discussed in this context. Bor deposits lie between the Cenomanian Krivelj Formation and the Senonian epiclastic Metovnica Formation. Embedded between the two formations is

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12

Spalletti, Luis, and Ferrán Colombo. "Architecture of intereruptive and syneruptive facies in an Andean Quaternary palaeovalley: the Huarenchenque Formation, western Argentina." Andean Geology 46, no. 3 (2019): 471. http://dx.doi.org/10.5027/andgeov46n3-3170.

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The Huarenchenque Formation is a volcano sedimentary unit deposited to the east of the Plio-Quaternary Andean Magmatic Arc. In order to define depositional settings, two lithofacies associations (fluvial and pyroclastic) were defined. The fluvial facies association is composed of polymictic conglomerates with the predominance of basalt- dominated clasts, coarse- medium-grained conglomeratic sandstones and medium- to coarse-grained sandstones. These deposits occur as stacked or single bodies, display both sheet and channelized geometries, and contain a range of internal sedimentary structures,

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13

Jones, Jeffrey Scott. "The impact of employer-delayed deposits on plan participant wealth." Managerial Finance 42, no. 12 (2016): 1171–79. http://dx.doi.org/10.1108/mf-02-2016-0052.

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Purpose The purpose of this paper is to examine the impact of employer-delayed deposits to defined contribution plans on plan participant wealth. The history of regulatory oversight on the obligations of employers to remit deposits to defined contribution plans on behalf of employees is discussed. In light of these regulations, the paper discusses and examines situations in which employers may legally delay the deposit of employee contributions to a defined contribution plan and how the existence of various calendar anomalies may impact the returns of plan participants. Design/methodology/appr

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Brandauer, M., A. Schulz, and S. Wittig. "Mechanisms of Coke Formation in Gas Turbine Combustion Chambers." Journal of Engineering for Gas Turbines and Power 118, no. 2 (1996): 265–70. http://dx.doi.org/10.1115/1.2816587.

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New gas turbine combustor designs are developed to reduce pollutant and NOx emissions. In these new combustors, the formation of carbonaceous deposits, especially in prevaporizers, affects the reliability and effectiveness of operation. To avoid deposits, a detailed knowledge of the origins and mechanisms of formation is required. To obtain a deeper insight, the phenomena were studied systematically. The deposits under consideration show differing characteristics suggesting more than one formation mechanism in the combustor. Consequently, the primary goal was to identify the formation mechanis

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15

Giannini, Gabriel, and Lois J. Arend. "The Prevalence of Mesangial Electron-Dense Deposits in PLA2R-Positive Membranous Nephropathy." Nephron 146, no. 2 (2021): 167–71. http://dx.doi.org/10.1159/000519912.

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<b><i>Introduction:</i></b> Membranous nephropathy (MN) is a common cause of nephrotic syndrome in adults and can be primary or secondary. The antigenic target of antibodies in 70% of primary cases is phospholipase A2 receptor (PLA2R). The presence or absence of mesangial electron-dense deposits has been used to distinguish between primary and secondary MN. Mesangial deposits suggest MN due to lupus, infection, or other causes, though they are reported to occur in approximately 10% of primary MN. Staining for PLA2R is now frequently used for confirming a diagnosis of pr

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16

Ren, Lingling, Huimin Gu, Wei Wang, et al. "The Microstructure and Properties of an Al-Mg-0.3Sc Alloy Deposited by Wire Arc Additive Manufacturing." Metals 10, no. 3 (2020): 320. http://dx.doi.org/10.3390/met10030320.

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Al-Mg alloys can reach medium strength without a solid solution and quenching treatment, thereby avoiding product distortion caused by quenching, which has attracted the attention of wire arc additive manufacturing (WAAM) researchers. However, the mechanical properties of the WAAM Al-Mg alloy deposits obtained so far are poor. Herein, we describe the preparation of Al-Mg-0.3Sc alloy deposits by WAAM and detail the pores, microstructure, and mechanical properties of the alloy produced in this manner. The results showed that the number and sizes of the pores in WAAM Al-Mg-0.3Sc alloy deposits we

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17

Fitriyani and Khairina Tambunan. "Faktor-Faktor Yang Mempengaruhi Deposito Mudharabah Pada Bsi Kcp Stabat Proklamasi." Regress: Journal of Economics & Management 2, no. 1 (2022): 21–34. http://dx.doi.org/10.57251/reg.v2i1.276.

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This study aims to examine the effect of profit-sharing ratio, tax, and FDR on mudharabah deposit customers at BSI Kcp Stabat Proklamasi. This research was conducted at BSI Kcp Stabat Proclamation. The research method used is a quantitative method with primary data. The primary data analyzed are data on the number of mudharabah deposit customers, profit sharing ratios, taxes, and monthly FDR for 1 (one) year which are taken at BSI Kcp Stabat Proclamation. Based on the results of the simultaneous test (F test), the independent variables (profit sharing ratio, tax, and FDR) have no simultaneous

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18

Blythe, Kurt. "The Academic Reward System is the Primary Influence Toward Faculty Non-Participation in Institutional Repositories." Evidence Based Library and Information Practice 2, no. 4 (2007): 70. http://dx.doi.org/10.18438/b8hc7v.

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Objective – To better understand the lack of faculty participation in Cornell University’s DSpace institutional repository (IR), and to learn if this lack of participation is peculiar to Cornell or reflective of a larger trend in faculty non-participation in IRs.   Design – Comparative analysis and interviews.   Setting – Cornell University’s DSpace IR and sciences, social sciences, and humanities faculties; and DSpace installations at 7 other universities.  Subjects – The DSpace IR at Cornell University and at 7 other locations. Eleven sciences, social scie

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19

Krylova, Elena B., and Alina F. Savderova. "ASSESSMENT OF THE INFLUENCE OR REGIONAL FACTORS ON THE DEPOSIT POLICY OF COMMERCIAL BANKS." Oeconomia et Jus, no. 2 (June 28, 2022): 38–43. http://dx.doi.org/10.47026/2499-9636-2022-2-38-43.

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The article analyzes the deposit market of the Russian Federation both for the whole country and in the regional context, and provides data on funds of the population attracted in the form of deposits into commercial banks over several years. The relevance of the article is due to the fact that in an economically unstable situation, the primary task of commercial banks is to maintain their financial liquidity and solvency. Taking into account the specificity of commercial banks, more than 80% of their resource base is represented by deposits of their clients. However, the volume of funds attra

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20

Fakhouri, Fadi, Silvina Darré, Dominique Droz, et al. "Mesangial IgG Glomerulonephritis: A Distinct Type of Primary Glomerulonephritis." Journal of the American Society of Nephrology 13, no. 2 (2002): 379–87. http://dx.doi.org/10.1681/asn.v132379.

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ABSTRACT. Fourteen cases of mesangial IgG glomerulonephritis characterized by exclusive or predominant mesangial IgG deposits are reported. The median age at onset was 19 yr (range, 13 to 47 yr). No patient exhibited evidence of systemic lupus erythematous or other systemic diseases. Proteinuria was present in all cases (median, 2.4 g/d; range, 1 to 13 g/d), microscopic hematuria in 12 cases, and macroscopic hematuria in two cases. Five patients were hypertensive at the time of referral. In all cases, renal biopsies revealed mesangial IgG deposits and varying degrees of mesangial matrix expans

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Petrova, Natalia S., Natalia Yu Denisova, and Aliaksei V. Kirykovich. "Microfabric characteristics of potash ore of the Pripyat potash-bearing basin." Journal of the Belarusian State University. Geography and Geology, no. 1 (June 20, 2019): 82–94. http://dx.doi.org/10.33581/2521-6740-2019-1-82-94.

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The requirements of complex subsoil use are increasing in the Pripyat potash-bearing basin: potash ore of new technologic types, with lower contents of useful components, increased concentrations of harmful impurities. Using all complex of quality indicators assessment of natural types of potash ore is undoubtedly prioritized by characteristic of potash deposits. The study of structural and textural features and composition of potash deposits has been given attention since the time of discover of the Starobin deposit. Systematic study of salt rock petrology has been started after the discovery

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22

Bély, M., and Á. Apáthy. "AB1037 CRYSTAL DEPOSITS IN PRIMARY SYNOVIAL CHONDROMATOSIS." Annals of the Rheumatic Diseases 81, Suppl 1 (2022): 1642.1–1642. http://dx.doi.org/10.1136/annrheumdis-2022-eular.631.

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BackgroundPrimary synovial chondromatosis (prSynCh) is a metaplastic disorder of the synovial membrane, characterized by chondrocyte differentiation of synovial pluripotent stem cells, and chondroid tissue production.The prSynCh may be accompanied with amorphous calcium phosphate or carbonate deposition and bone formation, with or without true medullary spaces.The cause of stem cell differentiation is unknown; different irritative agents (infective, toxic, mechanic, etc.) are mentioned, but the condition may occur spontaneously as well [1, 2].Crystal deposits as irritative agents of primary sy

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Bushuev, Yackov Yur’evich, and Vasilii Ivanovich Leontev. "The Geochemical Features of Epithermal Gold-Telluride (Au-Te) Ores of the Podgolechnoe Deposit (Central Aldan Ore District, Yakutia)." Key Engineering Materials 743 (July 2017): 422–25. http://dx.doi.org/10.4028/www.scientific.net/kem.743.422.

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The Central Aldan ore district is a geologically unique area, representing the conjunction zone of the ancient structures of the Archean–Proterozoic crystalline shield, overlain by the Vendian–Cambrian sedimentary cover. The latter was formed in the Mesozoic by intensive alkaline magmatism. Within the Central Aldan ore district, most of primary gold-ore deposits are confined to the sedimentary cover. Until recently it was considered that only ancient complexes in the crystalline basement contain commercial Au-U mineralization. As a result of the geological exploration works over the period of

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Damanik, M. P., and N. Yoshikawa. "Histopathological Features of Primary Nephrotic Syndrome in Children." Paediatrica Indonesiana 38, no. 1-2 (2017): 20. http://dx.doi.org/10.14238/pi38.1-2.1998.20-8.

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Renal biopsy was performed on 28 out of 50 children with primary nephrotic syndrome encountered during the period January 1994 - December 1995. Light microscope (LM) and immunofluorescence microscope QM) examinations were performed on all biopsy specimens. LM examination indicated minimal changes (MC) in 13 cases (46.4%), focal segmental glomerulosclerosis (FSGS) in 10 (35.7%), membranous glomerulonephritis (MG) in 2 (7.1%), mesangial proliferative glomerulonephritis (MPG) in 7 (7.1 %), and membranoproliferative glomerulonephritis (MPGN) in 1 (3.6%). On IM examination, immunoglobulin deposit w

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Rogov, D. A., E. V. Belogub, K. A. Novoselov, M. A. Rassomakhin, R. R. Irmakov, and A. E. Chugaev. "Mineral forms of tungsten at the Porokhovskoe and Yugo-Konevskoe deposits (South Urals)." МИНЕРАЛОГИЯ (MINERALOGY) 9 (June 29, 2023): 41–59. http://dx.doi.org/10.35597/2313-545x-2023-9-2-4.

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The ore hand specimens and technological ore samples from the Porokhovskoe and Yugo-Konevskoe W greisen deposits in the South Urals are studied. The major W minerals of primary ores at both deposits include hubnerite and scheelite. The secondary and accessory minerals are pyrite, chalcopyrite and molybdenite, rare minerals include sphalerite, galena, bismuthinite, aikinite, unidentifed chalcogenides and sulfosalts, magnetite, rutile, ilmenite, titanite and columbite. The veins are mainly composed of quartz and muscovite with subordinate calcite, dolomite and fuorite, rare chlorite and amphibol

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Gao, Bangfei, Minghua Dong, Hui Xie, Zhiliang Liu, Yihang Li, and Tong Zhou. "Discovery and Exploration of the Luming Porphyry Mo Deposit, Northeastern China: Implications for Regional Prospecting." Minerals 14, no. 7 (2024): 718. http://dx.doi.org/10.3390/min14070718.

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Over the past two decades, significant deposit discoveries were made in Northeastern China, including the super-large Chalukou, Daheishan, and Luming porphyry Mo deposits. The discovery of the Luming deposit was accomplished through verification of stream sediment anomalies, with mineralization closely associated with early Jurassic monzogranite and granite porphyry. Previous studies primarily focused on the mineralization mechanisms of these deposits without adequately addressing the exploration methods and prospecting criteria. This study involved a comprehensive re-evaluation of geological

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Waythomas, Christopher F., and Kristi L. Wallace. "Flank collapse at Mount Wrangell, Alaska, recorded by volcanic mass-flow deposits in the Copper River lowland." Canadian Journal of Earth Sciences 39, no. 8 (2002): 1257–79. http://dx.doi.org/10.1139/e02-032.

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An areally extensive volcanic mass-flow deposit of Pleistocene age, known as the Chetaslina volcanic mass-flow deposit, is a prominent and visually striking deposit in the southeastern Copper River lowland of south-central Alaska. The mass-flow deposit consists of a diverse mixture of colorful, variably altered volcanic rocks, lahar deposits, glaciolacustrine diamicton, and till that record a major flank collapse on the southwest flank of Mount Wrangell. The deposit is well exposed near its presumed source, and thick, continuous, stratigraphic exposures have permitted us to study its sedimenta

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Sedmíková, M., R. Rajmon, J. Petr, et al. "Ultrastructural localisation of calcium deposits in the mouse ovary." Reproduction, Fertility and Development 15, no. 8 (2003): 415. http://dx.doi.org/10.1071/rd03040.

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Follicle-enclosed mouse oocytes contain numerous calcium deposits. The ultrastructural distribution of calcium deposits in the nuclei, mitochondria and cytoplasm of mouse oocytes and granulosa cells of primary, secondary and antral follicles was examined using the combined oxalate–pyroantimonate method. The mitochondria of oocytes from all types of follicles had the highest levels of calcium deposits of all oocyte compartments, with the exception of primary follicles, in which oocyte nuclei contained the same level of calcium deposits as the mitochondria. Calcium deposits in the cytoplasm of o

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Singh, Erwin. "A Rare Case of Skeletal Muscle Métastasés from Primary Lung Carcinoma." Canadian Journal of Medical Sonography 8, no. 2 (2017): 21–32. http://dx.doi.org/10.3138/cjms.v8i2.21.

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Metastases from any cancer to skeletal muscle are uncommon and metastatic deposits to skeletal muscle from a primary lung malignancy are exceedingly rare. This study is a presentation of a skeletal muscle metastatic deposit in the gluteus maximus from a primary lung carcinoma in a 63-year-old male. At the time, the patient had no symptoms of lung carcinoma and was referred to our clinic for right hip pain to rule out osteoarthritis and/or bursitis. The documentation of the gluteal mass led to the discovery of the lung carcinoma. This case study presents the clinical and ultrasound findings and

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Tang, Pan, Juxing Tang, Xinghai Lang, et al. "Biotite Geochemistry and Its Implication for the Difference in Mineralization in the Xiongcun Porphyry Cu–Au Ore District, Tibet." Minerals 13, no. 7 (2023): 876. http://dx.doi.org/10.3390/min13070876.

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The Xiongcun Cu–Au ore district is in the southern middle Gangdese Metallogenic Belt, Tibet, and formed during Neo-Tethyan oceanic subduction. The Xiongcun ore district mainly comprises two deposits, the No. I and No. II deposits, which were formed by two individual mineralization events according to deposit geology and Re–Os isotopic dating of molybdenite. The No. I deposit is similar to a reduced porphyry copper–gold deposit, given the widespread occurrence of primary and/or hydrothermal pyrrhotite and common CH4-rich and rare N2-rich fluid inclusions. The No. II deposit, similar to classic

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Nnajieze, Ifeyinwa Elizabeth. "Relationship Between Liquidity Management and Deposit Mobilization of Banks in Nigeria." European Journal of Accounting, Auditing and Finance Research 12, no. 11 (2024): 26–43. https://doi.org/10.37745/ejaafr.2013/vol12n112643.

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This study investigates the relationship between liquidity management and deposit mobilization of banks in Nigeria. The study, which examines the impact of liquidity management measures, including the cash-to-current asset ratio, the current ratio, and the cash reserve ratio, expresses a well-founded view that, while both the cash-to-current asset ratio and current ratio do not significantly affect total deposits, the cash reserve ratio shows a significant positive correlation between it and deposits. These results confirm that cash reserves serve as a primary function for depositor satisfacti

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Nasrin, Farhana. "An Empirical Analysis of Macroeconomic and Bank Specific Factors Ascertaining Bank Deposit: A Study on Bangladesh." International Journal of Economics and Financial Issues 13, no. 3 (2023): 46–55. http://dx.doi.org/10.32479/ijefi.14097.

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Bank working capital is largely determined by the level of bank deposits. As the primary source of funds for carrying out lending activities, deposits are the lifeblood of a banking firm. More savings encourages more investment which in turn ensures economic growth. This paper tries to find out relevant factors influencing volume of deposit mobilization by commercial banks. The study is based on the opinion of 200 sample professionals from 29 listed private commercial banks in Bangladesh. The result shows that Government monetary policy, bank size, diversified services, state of local and nati

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Wang, Zhen-Yu, Hong-Rui Fan, Lingli Zhou, Kui-Feng Yang, and Hai-Dong She. "Carbonatite-Related REE Deposits: An Overview." Minerals 10, no. 11 (2020): 965. http://dx.doi.org/10.3390/min10110965.

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The rare earth elements (REEs) have unique and diverse properties that make them function as an “industrial vitamin” and thus, many countries consider them as strategically important resources. China, responsible for more than 60% of the world’s REE production, is one of the REE-rich countries in the world. Most REE (especially light rare earth elements (LREE)) deposits are closely related to carbonatite in China. Such a type of deposit may also contain appreciable amounts of industrially critical metals, such as Nb, Th and Sc. According to the genesis, the carbonatite-related REE deposits can

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Morokhin, Alexey, Tatyana Shumilova, and Sergei Svetov. "Compositional peculiarities of the primary, mixed, and oxidized copper ores in gabbroids of the Volkovsky massif (Middle Urals, Russia)." Ores and metals, no. 3 (October 14, 2024): 58–81. http://dx.doi.org/10.47765/0869-5997-2024-10014.

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The Ural type magmatic copper deposits in gabbro are assigned to a specific type of copper deposits which exploitation substantially depends on the oxidation degree of the ores, that is often not unambiguous. At the Volkovskoe Cu-Fe-V deposit (Middle Urals, Russia), three technological grades of the copper ores are known, the primary, oxidized, and mixed ones, that are distinguished based on the relative content of Cu2+ in the total copper balance. This paper presents petrological, petrochemical, geochemical, and mineralogical characteristics of natural varieties of the copper ores of the Nort

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Yin, Jian Zhao. "Geology and genetic types of the primary rhenium deposits in Mainland China." Naturalis Scientias 01, no. 04 (2024): 303–23. https://doi.org/10.62252/nss.2024.1021.

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The unique physical and chemical properties of the rare element rhenium make it have increasingly extensive and indispensable uses in many modern high-tech fields such as national defense, aerospace, petrochemical industry, electronic materials, quantum computing and ultra-high temperature emitters, and medicine. For this reason, many countries, especially Western developed countries, have listed rhenium as one of the critical metals or strategic minerals for protection and restriction. Due to the heterogeneity of the distribution of chemical elements throughout the earth, compared with simila

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Lotfi, Mohammad, Mansoureh Shirnavard Shirazi, Nima Nezafati, and Arash Gourabjeripour. "MINERALOGY AND GEOCHEMISTRY STUDY OF REE MINERALS IN HOST ROCKS IN IIC IRON DEPOSIT, BAFGH MINERAL AREA, CENTRAL IRAN." Geosaberes 11 (January 8, 2020): 51. http://dx.doi.org/10.26895/geosaberes.v11i0.909.

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The IIC deposit area to the east of the Bafq region exposes rocks that comprise the part of the Central Iran continental terrane. The IIC deposit iron orebodies are magmatic-related hydrothermal deposits that, when considered collectively display a vertical zonation from high-temperature, magmatic ± hydrothermal deposits emplaced at moderate depths (~1–2 km) to magnetite-dominant IOCG deposits emplaced at an even shallower subvolcanic level. The shallowest parts of these systems include near-surface, iron oxide-only replacement deposits, surficial epithermal sediment-hosted replacement deposit

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Syafrizal, AYA Hakim, and A. Sulastri. "Geochemical Distribution of REE and Grain Size Analysis of Heavy Mineral Associated with Tin Placer-Type Deposit, Bangka." IOP Conference Series: Earth and Environmental Science 1031, no. 1 (2022): 012008. http://dx.doi.org/10.1088/1755-1315/1031/1/012008.

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Abstract Indonesia is included in the East Malaya Block of the Southeast Asian Tin Belt. Two types of tin deposits in Indonesia are primary and secondary tin deposits (placer). Factors that can cause the formation of placer tin deposits include S-type granite, weathering, transportation, and sedimentation. Factors that control the formation of placer tin deposits include the presence of source rock (granite type S), weathering processes, erosion, transportation and sedimentation, and the presence of basins or valleys where weathering materials are deposited. The transportation process has a ma

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Md., Mehedi Hasan. "The Effects of Target-Based Deposit mobilization Strategies on Bank Deposits, Financial Gains, and Employees' Promotions in the Banking Sector of Bangladesh." ISRG Journal of Economics, Business & Management (ISRGJEBM) II, no. IV (2024): 131–37. https://doi.org/10.5281/zenodo.13299033.

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<em>This paper seeks to examine the effects of target deposit mobilization strategies on bank deposit sizes, financial gains, and promotion opportunities offered to those employees working in commercial banks in the Barishal Division of Bangladesh. The study uses primary data collected from 200 bank employees by means of a structured questionnaire and secondary data sources and analyzed by descriptive statistics with the chi-square test. The findings reveal a positive effect of the strategies for target deposits on the magnitude of bank deposits is very strong. Further, the existence of financ

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Vikentye, I. V., B. B. Damdinov, O. R. Minina, A. V. Spirina, and L. B. Damdinova. "Classification of Polymetallic Ore-Forming Processes and Transitional VMS–SEDEX–MV-type: the Example of the Giant Ozernoe Deposit in Transbaikalia, Russia." Геология рудных месторождений 65, no. 3 (2023): 201–36. http://dx.doi.org/10.31857/s001677702303005x.

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This article discusses the general classification approaches and key features of different families of polymetallic deposits, with particular attention to the largest in Eurasia Ozernoe polymetallic deposit located in Western Transbaikalia and thoroughly explored 50 years ago. The main groups (or families) of polymetallic deposits in the English-language literature are identified by brief names: volcanogenic massive sulphide (VMS), sedimentary exhalative (SEDEX), and Mississippi Valley type (MVT). Within these three families of deposits, there are many additional types/subtypes, a large number

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Jovanović, Aca, Mile Bugarin, and Miodrag Šešlija. "Primena suve metode X-Ray senzorskog sortiranja/ prečišćavanja uglja – lignita sa površinskog kopa uglja „GACKO“ 20212, XXIII." Energija, ekonomija, ekologija 23, no. 2 (2021): 79–84. http://dx.doi.org/10.46793/eee21-2.79j.

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This paper discusses the results of laboratory research and semi-industrial tests of lignite enrichment using X-Ray sensor sorting technology based on which the process parameters for the MMD - Main Mining Design of preparation and treatment of lignite exploited from stratified coal deposit. Also, the paper presents the process and technical solutions given in the MMD. The considered X-Ray Sensor Sorting technology has been successfully applied in the world for about 30 years for separation / sorting of various polymetallic primary and secondary raw materials, for treatment of poor ore deposit

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Zarasvandi, Alireza, Mohsen Rezaei, Martiya Sadeghi, Houshang Pourkaseb, and Masoume Sepahvand. "Rare-earth element distribution and genesis of manganese ores associated with Tethyan ophiolites, Iran: A review." Mineralogical Magazine 80, no. 1 (2016): 127–42. http://dx.doi.org/10.1180/minmag.2016.080.054.

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AbstractThe Zagros orogenic and metallogenic belt is characterized by the widespread occurrence of manganese and ferromanganese deposits. These deposits are spatially associated with radiolarian cherts and basaltic rocks, which cap the ophiolite sequences. The present work provides a review on the rare-earth element (REE) geochemistry coupled with major- and trace-element geochemical characteristics of the Nasirabad and Abadeh Tashk manganese deposits (associated with the Neyriz ophiolite), and Sorkhvand manganese deposit (associated with the Kermanshah ophiolite). These data are used to gain

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García-Veigas, Javier, Luis Gibert, Dioni I. Cendón, Francesco Dela Pierre, Marcello Natalicchio, and David Artiaga. "Sulfate isotope composition of Messinian evaporites in the Piedmont basin (Italy)." Geogaceta 70 (October 31, 2023): 19–22. http://dx.doi.org/10.55407/geogaceta102282.

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The Piedmont basin (NW Italy) records a Messinian Salinity Crisis (MSC) succession including a selenite gypsum deposit assigned to the Primary Lower Gypsum (PLG, MSC stage 1). Strontium isotope ratios are in the range of the PLG deposits of the Mediterranean area. Sulfate isotope compositions of vertically oriented selenite gypsum beds, in the lower part of the succession, are similar to those reported in other PLG deposits. However, flattened branching selenite cones in the upper part show higher isotope compositions, mainly in δ34S values, suggesting intense BSR conditions, stronger than rep

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Rodliyah, I., R. Wijayanti, A. Septiarani, A. Sudrajat, and D. Firmansyah. "The extraction of tin (Sn) from primary tin ore deposits using wet chlorination." IOP Conference Series: Earth and Environmental Science 882, no. 1 (2021): 012007. http://dx.doi.org/10.1088/1755-1315/882/1/012007.

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Abstract More than half of the world’s tin production is from secondary ore deposits. However, along with its depletion, PT Timah Tbk has explored and mined the primary deposits in Belitung, one that is expected to become tin’s new source. Tin was found liberated as cassiterite in the secondary deposits, while in the primary, it was associated with other minerals requiring more complex processing. Therefore, a suitable technology is needed to extract the tin from the primary ore deposits. This research aims to observe the extraction of tin from primary deposits (oxide and skarn ores) using HCl

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Setyaningsih, Ni Putu Ari, I. Ketut Satria Wiradharma Sumertajaya, and Fanny Priscyllia. "LEGAL PROTECTION FOR CUSTOMER FUNDS AT VILLAGE CREDIT INSTITUTIONS (LPD) THROUGH A DEPOSIT GUARANTEE SCHEME BY THE EMPOWERMENT INSTITUTION FOR LPD." NOTARIIL Jurnal Kenotariatan 7, no. 2 (2022): 55–64. http://dx.doi.org/10.22225/jn.7.2.2022.55-64.

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In the relevant Governor’s Regulations regarding LPD, it is not regulated regarding the value of guaranteed deposits for each customer at an LPD that is a participant in the deposit guarantee. The absence of legal regulations governing the value of deposits guaranteed through the LPD customer fund guarantee scheme has led to the need for a study of the extent of protection obtained by LPD customers for their deposit funds under this scheme. This research aims to examine deposit guarantee schemes for LPD customers and legal protection for customer funds at LPD through the loan fund scheme organ

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Rodriguez-Mustafa, Maria A., Adam C. Simon, Irene del Real, et al. "A Continuum from Iron Oxide Copper-Gold to Iron Oxide-Apatite Deposits: Evidence from Fe and O Stable Isotopes and Trace Element Chemistry of Magnetite." Economic Geology 115, no. 7 (2020): 1443–59. http://dx.doi.org/10.5382/econgeo.4752.

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Abstract Iron oxide copper-gold (IOCG) and iron oxide-apatite (IOA) deposits are major sources of Fe, Cu, and Au. Magnetite is the modally dominant and commodity mineral in IOA deposits, whereas magnetite and hematite are predominant in IOCG deposits, with copper sulfides being the primary commodity minerals. It is generally accepted that IOCG deposits formed by hydrothermal processes, but there is a lack of consensus for the source of the ore fluid(s). There are multiple competing hypotheses for the formation of IOA deposits, with models that range from purely magmatic to purely hydrothermal.

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Lenkiewicz, Joanna, Michal Gucwa, David Cooper, and Wladek Minor. "Analysis of primary citations (references) of PDB deposits." Acta Crystallographica Section A Foundations and Advances 78, a1 (2022): a59. http://dx.doi.org/10.1107/s2053273322099405.

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Bansal, Nalini, Vivek Vij, and Mukul Rastogi. "Primary Hyperoxaluria Involving the Liver With Crystal Deposits." ACG Case Reports Journal 6, no. 2 (2019): e00029. http://dx.doi.org/10.14309/crj.0000000000000029.

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Abedini, Amin, and Reza Karkeabadi. "Impact of Deposition Condition on the Morphology and Electrochemical Performance of Deposited F-Doped PbO₂ on Graphite Substrate in Primary PbO₂-Zn Battery." Journal of The Electrochemical Society 169, no. 2 (2022): 020509. http://dx.doi.org/10.1149/1945-7111/ac4cd6.

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The impact of deposition process parameters (temperature, current density, Pb2+ concentration, and time of deposition) on morphology, electrical resistance, and discharge performance of a graphite/PbO2 cathode in a PbO2/zinc primary battery was investigated. The morphology, architecture, and phase composition of the PbO2 deposits were studied by FESEM, EDX, and XRD. The AC impedance and discharge tests were utilized for the exploration of the interfacial process and discharge performance of PbO2 deposits. The results indicate that the increment in temperature and decrease in current density le

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Basori, Mohd Basril Iswadi, Sarah Gilbert, Khin Zaw, and Ross Large. "Geochemistry of Sphalerite from the Permian Volcanic-Hosted Massive Sulphide (VHMS) Deposits in the Tasik Chini Area, Peninsular Malaysia: Constraints for Ore Genesis." Minerals 11, no. 7 (2021): 728. http://dx.doi.org/10.3390/min11070728.

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The Bukit Botol and Bukit Ketaya deposits are two examples of volcanic-hosted massive sulphide (VHMS) deposits that occur in the Tasik Chini area, Central Belt of Peninsular Malaysia. The mineralisation is divided into subzones distinguished by spatial, mineralogical, and textural characteristics. The primary sulphide minerals include pyrite, chalcopyrite, sphalerite, and galena, with lesser amounts of Sn- and Ag-bearing minerals, with Au. However, pyrrhotite is absent from both deposits. This study presents the results of sphalerite chemistry analysed by using an electron microprobe. Two type

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Stewart, Margaret S., Bruno Lafrance, and Harold L. Gibson. "Early thrusting and folding in the Snow Lake camp, Manitoba: tectonic implications and effects on volcanogenic massive sulfide deposits." Canadian Journal of Earth Sciences 55, no. 8 (2018): 935–57. http://dx.doi.org/10.1139/cjes-2017-0242.

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The Chisel sequence occurs within the Snow Lake arc assemblage (SLA) of the Paleoproterozoic Trans-Hudson Orogen. It is host to six economic volcanogenic massive sulfide (VMS) deposits that formed within a single time-stratigraphic ore interval. The SLA was previously interpreted to share the same deformation history as the ca. 1.86–1.84 Ga Burntwood Group turbidites of the Kisseynew Basin to the north; however, early isoclinal folds identified in the arc assemblage cannot be correlated with structures in the turbidites and therefore developed prior to Burntwood Group deposition. This indicate

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