Article
Geochemistry & Geophysics
Ping Li, Ting Liang, Fan Huang, Tongyang Zhao, Zhixin Zhu, Yong Li, Jing Feng, Lei He
Summary: The Tieling Cu-Mo porphyry deposit in the eastern Tianshan metallogenic belt is a large porphyry molybdenum deposit related to Carboniferous granite porphyry, with mineralization processes taking place in three stages during the Late Carboniferous period. The ore-forming fluids were originally derived from magmatic hydrothermal fluids and then mixed with meteoric water, indicating a transition condition between subduction-related accretion and postcollisional orogeny. The deposit formed during the Late Carboniferous and is distinct from earlier mineralizations in the region. It should be given more attention in prospect evaluations.
Article
Geochemistry & Geophysics
Andrey Chugaev, Olga Yu. Plotinskaya, Elena O. Dubinina, Sergey Yu. Stepanov, Bulat I. Gareev, Georgii A. Batalin, Irina Rassokhina, Julia N. Chizhova, Dmitry Bondar, Vera D. Abramova
Summary: This paper investigates the source of metals for two Paleozoic porphyry Cu-Mo deposits in the Urals, providing new data and suggesting that granitoid melts were the dominant source. The lead isotope composition of the deposits is heterogeneous, while the sulfur isotope composition is homogeneous, consistent with typical porphyry deposits worldwide. The results indicate that 95% of the mantle lead is present in the porphyry Cu-Mo deposits in the Urals.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2022)
Article
Geology
Yong-gang Sun, Bi-le Li, Qing-feng Ding, Fan-bo Meng, Xu-sheng Chen, Ye Qian, Li Wang, Lin-lin Wang, Qing-lin Xu
Summary: This study investigates the origin and evolution of ore-forming fluids in the newly discovered Xiaokele porphyry Cu (-Mo) deposit in the northern Great Xing'an Range of northeast China. The results suggest a close genetic relationship between the deposit and the granodiorite porphyry, with ore-forming materials likely originating from the porphyry. Furthermore, the deposition of copper in the deposit is primarily controlled by fluid cooling.
ORE GEOLOGY REVIEWS
(2022)
Article
Geology
Peng Zhang, Yan Zhao, Xiaochun Li, Lin-lin Kou, Zhong-wei Bi, Ren-ping Han
Summary: The newly-discovered Yanghuidongzi porphyry Cu deposit, located in the southeastern part of Heilongjiang Province in NE China, is one of the rare Jurassic porphyry Cu deposits within the easternmost segment of the Central Asian Orogenic Belt. The mineralization is closely related to alteration zoning and formed during a compressional tectonic setting associated with the subduction of the Paleo-Pacific Plate, with ore-forming materials possibly sourced from both crustal and mantle sources.
ORE GEOLOGY REVIEWS
(2021)
Article
Geochemistry & Geophysics
I Jahn, C. Clark, S. Reddy, R. J. M. Taylor
Summary: The Capricorn Orogen in Western Australia records the convergence and collision of the Yilgarn and Pilbara cratons over one billion years, followed by intracontinental reworking. New isotopic analyses suggest that the Glenburgh Terrane may represent a reworked portion of the adjacent cratons. The transition from mantle-derived to crustal-melting dominated granite magmatism reflects a geodynamic evolution from subduction-accretion to collision and intracratonic reworking.
JOURNAL OF PETROLOGY
(2021)
Article
Geochemistry & Geophysics
Jordan A. McDivitt, Daniel J. Kontak, Bruno Lafrance, Joseph A. Petrus, Mostafa Fayek
Summary: By tracking mineralized shear zones in orebodies and analyzing trace metal, sulfur isotope, and oxygen isotope data in pyrite, this study reveals the nature and genesis of different gold events, providing important clues for understanding Archean gold deposits.
MINERALIUM DEPOSITA
(2021)
Article
Geochemistry & Geophysics
Hong Zhang, Fang An, Mingxing Ling, Xiaolin Feng, Weidong Sun
Summary: The origin of the Dexing porphyry Cu deposit has been determined to be partial melting of the subducting Paleo-Pacific plate based on the analysis of zircon and apatite in the deposit. The zircon and apatite in the porphyry show distinct characteristics different from the wall rocks.
Article
Geochemistry & Geophysics
Ali Aluc, Ilkay Kuscu, Alexey Ulyanov, David Selby, Clementine Antoine, Richard Spikings, Robert Moritz
Summary: The Kirazil deposit is an important ore deposit located in the Biga Peninsula, characterized by high-sulfidation and porphyry Cu mineralization. The study demonstrates a long-lasting Cenozoic magmatic and metallogenic evolution of the deposit. Furthermore, it shows that various hydrothermal and porphyry systems have been active at the same location during the extensional tectonics of the Biga Peninsula.
MINERALIUM DEPOSITA
(2023)
Article
Geology
Xiaolong He, Qiuye Yu, Songyan Liu, Mingjian Yang, Da Zhang
Summary: The large-scale Erdaohe Ag-Pb-Zn deposit in China is characterized by multiple orebodies formed through four stages of mineralization, with different fluid characteristics recorded by fluid inclusions. Sulfur isotope analysis suggests a magmatic source for the sulfur in sulfides. Oxygen isotope data from quartz samples indicate a magmatic origin for the mineralizing fluids, with later addition of meteoric water playing a role in metal mineralization.
ORE GEOLOGY REVIEWS
(2021)
Article
Geology
Guotao Sun, Jia-Xi Zhou, Han-Sheng Long, Lingli Zhou, Kai Luo
Summary: This study investigates the vertical distribution of Ag-Pb-Zn-(Cu)-Mo mineralization within a porphyry system at the Laochang deposit in the Sanjiang metallogenic belt in southwest China. The findings suggest a genetic link between the massive sulfide Ag-Pb-Zn-(Cu) mineralization and the granite porphyry, as well as insights into the evolving isotopic compositions of sulfur and zinc in the ore-forming fluids.
ORE GEOLOGY REVIEWS
(2021)
Article
Geology
Fan Xiao, Fei-Peng Fan, Guang-Fu Xing, Shao-Yong Jiang
Summary: Research on the Qingyunshan Cu-Au deposit suggests that it is a vein-type deposit located in Fujian Province with main mineralization stages having lower temperatures and ore-forming fluids evolving from a mixing of magmatic fluids and meteoric water.
ORE GEOLOGY REVIEWS
(2021)
Article
Geochemistry & Geophysics
Ali Ucurum, Cigdem Sahin Demir, Nazmi Otlu, Mustafa Erturk, Taner Ekici, Jason Kirk, Joaquin Ruiz, Ryan Mathur, Greg B. Arehart
Summary: The Cerattepe deposit in the eastern Pontide tectonic belt is a hybrid VMS system with some epithermal features. Isotope analysis and geochronology methods have been used to understand the hydrothermal history and age of the deposit. This research suggests a younger mineralization age than previously proposed for VMS mineralization in the eastern Pontides, with evidence of a distinct magmatic source for fluids and metals sourced from the surrounding host rocks.
Article
Geology
Bingke Sun, Banxiao Ruan, Xinbiao Lv, Zhihui Dai, Chen Mao
Summary: The newly discovered Huangtan Au-Cu deposit in the Eastern Tianshan represents the first Au-dominated volcanogenic massive sulfide polymetallic deposit in the region. The ore-forming fluids are characterized by middle-low temperature, low salinity, and a complex H2O-NaCl + CO2 + CH4 system, with metal precipitation mechanisms involving fluid cooling dilution, local boiling, and fluid mixing. Isotopic data suggest a deep-seated magma source for ore-forming materials in this unique VMS metallogenic system.
ORE GEOLOGY REVIEWS
(2021)
Article
Geochemistry & Geophysics
J. A. Kidder, A. Voinot, M. Leybourne, D. Layton-Matthews, R. J. Bowell
Summary: This study utilized stable metal isotopes in groundwater to identify potential hydrogeochemical footprints in mineral exploration. By analyzing stable isotopes in the groundwater, it is possible to determine processes such as mineral dissolution, precipitation, and recharge pathways.
APPLIED GEOCHEMISTRY
(2021)
Article
Geology
Ying Ma, Shao-Yong Jiang
Summary: Stratabound base metal sulfide deposits in Fujian Province, China, are important Zn-Pb producers. The origin of the Pb-Zn mineralization has been debated, with conflicting ore genetic models proposed. In this study, U-Pb ages of hydrothermal titanite and C-O-S-Pb isotopes of gangue and ore minerals were analyzed to determine the timing and origin of the mineralization. The results suggest that the Shanhou deposit is a metasomatic skarn-like deposit associated with a possible hidden Early Cretaceous felsic intrusion at depth, rather than a metamorphosed VMS deposit.
ORE GEOLOGY REVIEWS
(2023)
Article
Environmental Sciences
Sofia Navarro-Espinoza, Aracely Angulo-Molina, Diana Meza-Figueroa, Guillermo Lopez-Cervantes, Mercedes Meza-Montenegro, Aurora Armienta, Diego Soto-Puebla, Erika Silva-Campa, Alexel Burgara-Estrella, Osiris Alvarez-Bajo, Martin Pedroza-Montero
Summary: A study in a state in northwestern Mexico found a correlation between arsenic in drinking water and DNA damage in indigenous communities, which was further confirmed through the use of mice models, showing histological changes in brain and liver cells.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Christian B. Vega-Millan, Ana G. Devora-Figueroa, Jefferey L. Burgess, Paloma Beamer, Melissa Furlong, R. Clark Lantz, Diana Meza-Figueroa, Mary Kay O'Rourke, Leticia Garcia-Rico, Edna R. Meza-Escalante, Jose J. Balderas-Cortes, Maria M. Meza-Montenegro
Summary: This study found that the alteration of serum CC16 and MMP-9 levels in children may be associated with the toxic effects of arsenic exposure through drinking water. Increased levels of arsenic exposure were significantly correlated with decreased serum CC16 levels, increased serum MMP-9 levels, and increased risk of respiratory infections among children.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Diana Meza-Figueroa, Martin Pedroza-Montero, Marcelino Barboza-Flores, Sofia Navarro-Espinoza, Rodolfo Ruiz-Torres, Agustin Robles-Morua, Francisco Romero, Benedetto Schiavo, Belem Gonzalez-Grijalva, Monica Acosta-Elias, Abraham Mendoza-Cordova
Summary: This study reveals the existence of inhalable zirconia in urban dust, likely due to the CeO2-ZrO2 phase separation in catalytic converters. The Ce-Zr content in road dust exceeds geogenic levels, showing a significant correlation with anthropic sources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Francisco Pedroza-Montero, Karla Santacruz-Gomez, Monica Acosta-Elias, Erika Silva-Campa, Diana Meza-Figueroa, Diego Soto-Puebla, Beatriz Castaneda, Efrain Urrutia-Banuelos, Osiris Alvarez-Bajo, Sofia Navarro-Espinoza, Raul Riera, Martin Pedroza-Montero
Summary: Fluorescent nanodiamonds have shown potential as nanothermometers due to their temperature-dependent fluorescence spectra, with the model predicting temperature based on zero phonon lines of NV0 and NV- color centers. These nanodiamonds, of sizes 35nm, 70nm, and 100nm, demonstrated a linear relationship of fluorescence intensity with temperature, with sensitivities ranging from 4.14% to 6.994% degrees C-1. The non-cytotoxic interaction with HeLa cells also suggests their potential use in measuring temperatures in nano and microcellular aqueous environments.
APPLIED SCIENCES-BASEL
(2021)
Article
Geochemistry & Geophysics
Benedetto Schiavo, Diana Meza-Figueroa, Martin Pedroza-Montero, Jesus Vidal-Solano, Belem Gonzalez-Grijalva, Sofia Navarro-Espinoza, Francisco Romero, Ernesto Hernandez, Margarita E. Gutierrez-Ruiz, Agueda E. Ceniceros-Gomez
Summary: In school environments in the Sonoran Desert, dust contains anomalously high manganese (Mn) of geogenic origin, and non-carcinogenic risk assessment for children exposed to Mn showed potential health risks. Seasonal sampling revealed differences in manganese bioaccessibility and health hazards, highlighting the importance of considering seasonal factors in risk assessment in arid zones.
APPLIED GEOCHEMISTRY
(2021)
Article
Environmental Sciences
Ernesto Hernandez-Mendiola, Francisco Martin-Romero, Diana Meza-Figueroa, Berenice Hernandez-Cruz, L. Gerardo Martinez-Jardines, Violeta Espino-Ortega
Summary: The MD SA-ET area in Baja California Sur, Mexico has a history of intermittent mining activities for over 200 years. Studies have shown that waste from these activities has led to the dispersion of Pb, Cd, Zn, and As in soils, sediments, and groundwater. This study focuses on the environmental and human health risks in an arid environment where the population is exposed to abandoned mining waste. The findings suggest that while the total concentrations of As and Pb in urban soils and stream sediments are high, their geoavailability is low, indicating a low environmental risk. However, the bioaccessibility of As and Pb in these areas is high, posing potential risks to the residents.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Engineering, Environmental
Cynthia Faye Isley, Kara L. Fry, Xiaochi Liu, Gabriel Michael Filippelli, Jane A. Entwistle, Adam P. Martin, Melanie Kah, Diana Meza-Figueroa, John T. Shukle, Khadija Jabeen, Abimbola O. Famuyiwa, Liqin Wu, Neda Sharifi-Soltani, Israel N. Y. Doyi, Ariadne Argyraki, Kin Fai Ho, Chenyin Dong, Peggy Gunkel-Grillon, C. Marjorie Aelion, Mark Patrick Taylor
Summary: This study evaluated the concentrations of trace metals in indoor dust from homes in 35 countries and identified the main sources of these metals along with associated household characteristics. The findings suggest that factors such as home age, peeling paint, and garden access are important considerations for managing potential risks posed by indoor house dust, with chromium concentrations in indoor dust having the greatest health risk impact.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Sofia Navarro-Espinoza, Diana Meza-Figueroa, Roberto Guzman, Alberto Duarte-Moller, Hilda Esparza-Ponce, Francisco Paz-Moreno, Belem Gonzalez-Grijalva, Osiris Alvarez-Bajo, Benedetto Schiavo, Diego Soto-Puebla, Martin Pedroza-Montero
Summary: A Three-Way Catalyst (TWC) consists of a cordierite ceramic monolith coated with Al2O3, CexZr1-xO2, and platinoids mixture, with elements being released as platinoid concentration decreases. The sintering process leads to the growth in the size of the polycrystal structure, while the separation of CexZr1-xO2 phases results in the release of ZrO2 and CeO2 to the environment. The emission of refractory micro to nanocrystals to the atmosphere may pose a potential public health risk.
Article
Engineering, Environmental
Benedetto Schiavo, Diana Meza-Figueroa, Efrain Vizuete-Jaramillo, Agustin Robles-Morua, Aracely Angulo-Molina, Pablo A. Reyes-Castro, Claudio Inguaggiato, Belem Gonzalez-Grijalva, Martin Pedroza-Montero
Summary: This research examines the connection between metals associated with oxidative stress (OS) in urban dust and public health. The study also investigates the impact of seasonal variations on the dust's oxidative potential (OP) and the occurrence of diseases affected by OS. The findings highlight the importance of studying dust as an environmental factor that may potentially increase oxidative stress.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Green & Sustainable Science & Technology
Efrain Vizuete-Jaramillo, Diana Meza-Figueroa, Pablo A. Reyes-Castro, Agustin Robles-Morua
Summary: The Getis-Ord G(i)* statistic clustering technique was used to create a hot spot exposure map of potentially toxic elements (PTEs) in urban dust samples in a semiarid city in northwest Mexico. The results of the sensitivity analysis showed that flood zones and pervious and impervious zones were the most influential variables. This study provides an effective tool for assessing environmental vulnerability in the region.
Article
Chemistry, Applied
Grecia Pavlovich-Cristopulos, Benedetto Schiavo, Francisco M. Romero, Ernesto Hernandez-Mendiola, Aracely Angulo-Molina, Diana Meza-Figueroa
Summary: This research characterized eleven commercial products advertised as clinoptilolite for human consumption, revealing the presence of toxic metals and essential elements. Some of the samples did not contain clinoptilolite but other minerals. Additionally, ingestion of these products may pose non-carcinogenic and cancer risks to consumers.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Green & Sustainable Science & Technology
Benedetto Schiavo, Ofelia Morton-Bermea, Thania Elizabeth Arredondo-Palacios, Diana Meza-Figueroa, Agustin Robles-Morua, Rocio Garcia-Martinez, Daisy Valera-Fernandez, Claudio Inguaggiato, Belem Gonzalez-Grijalva
Summary: This study analyzes the variation of gaseous pollutants during the pre-lockdown, lockdown, and unlock period in Monterrey using ground-based measurements. The results show a drastic decrease in measured contaminants during the lockdown period, except for O-3 which increased. Using satellite data, a NO2 reduction during lockdown was also observed. The findings suggest a link between air pollutants and economic activity, and can be utilized for future strategies to improve urban air quality.
Article
Environmental Sciences
Benedetto Schiavo, Diana Meza-Figueroa, Ofelia Morton-Bermea, Efrain Vizuete-Jaramillo, Agustin Robles-Morua
Summary: This study investigated the seasonal variation in the spatial distribution of mercury (Hg) in dust in an arid area. Dust samples were collected from schools during the pre- and post-monsoon period and analyzed for Hg concentration. The results showed high contamination of Hg in the northern area of the city, which is characterized by brickyard activities. A bull's eye pattern of Hg was observed during the dry season and was attributed to emissions from kiln brick production. The study also highlighted potential health concerns to children and adults.
ATMOSPHERIC POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Benedetto Schiavo, Ofelia Morton-Bermea, Diana Meza-Figueroa, Monica Acosta-Elias, Belem Gonzalez-Grijalva, Maria Aurora Armienta-Hernandez, Claudio Inguaggiato, Daisy Valera-Fernandez
Summary: This study investigated the particle size distribution of ashfall from Popocatepetl volcano in Mexico and the behavior of ash nanoparticles in contact with lung fluids. The results showed that most of the ash particles were submicrometric in size and exhibited aggregation and disaggregation processes when in contact with lung fluids.
Article
Environmental Sciences
Jesus Arturo Bracamonte-Teran, Diana Meza-Figueroa, Leticia Garcia-Rico, Benedetto Schiavo, Maria Mercedes Meza-Montenegro, Ana Isabel Valenzuela-Quintanar
Summary: This study examines the transport of metal- and pesticide-polluted dust in one of the agricultural areas in Northwestern Mexico. The results show significant differences in the distribution of metals between active and abandoned fields. Principal component analysis identifies two potential sources of metal contamination related to traffic and agricultural activities. The presence of banned pesticides in dust deposited on roofs confirms the atmospheric transport from the agricultural area. The study also indicates that dust emitted from agricultural fields can reach neighboring states in Mexico and the USA.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Geochemistry & Geophysics
Om Prakash Kumar, Amiya S. Naik, P. Gopinathan, T. Subramani, Vishvajeet Singh, Prakash K. Singh, Uma K. Shukla, Arun Prabhu
Summary: This study characterizes lignite samples from Kapurdi, Giral, and Sonari mines in Rajasthan's Barmer Basin using petrographic and geochemical techniques. The results provide insights into the geochemical properties, hydrocarbon potential, depositional environment, and paleo-climatic conditions of these lignite deposits. The study finds high volatile matter and sulfur concentrations in the Barmer lignite deposits, as well as indications of a wet environment during organic material decomposition. The findings have implications for understanding the coalification profile and hydrocarbon source rock potential in the region.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)
Review
Geochemistry & Geophysics
Ashkan Jahandari, Behnam Abbasnejad
Summary: The assessment of heavy metal concentrations in agricultural soil is important for crop safety and quality, as well as potential risks to human health. This review analyzed published data on seven heavy metals in Iranian farmland soils and found that nickel and cadmium exceeded permissible levels. Arsenic showed significant contamination in multiple provinces, while lead and cadmium were highly contaminated in Fars province. Overall, the contamination levels of heavy metals in Iranian agricultural soils were relatively low.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)
Article
Geochemistry & Geophysics
Imran Ud Din, Said Muhammad, Shah Faisal, Inayat ur Rehman, Wajid Ali
Summary: The presence of heavy metal contamination in coal mines and surrounding environments in the Hangu and Kurram districts poses potential risks to the environment and human health.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)
Article
Geochemistry & Geophysics
Douglas Almeida Silveira, Paola Ferreira Barbosa, Cassiano Costa e Castro, Guilherme Ferreira da Silva, Joseneusa Brilhante Rodrigues
Summary: This study analyzed apatite grains from the Angico dos Dias Carbonatite Complex region in Brazil using an electron probe microanalyzer. The results showed that the apatite grains had characteristics of metacarbonatitic lithotypes and some had undergone substitution processes. Statistical analysis helped identify the sources of the apatite grains and confirmed the presence of carbonatitic bodies in the area.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)