Minerals MDPI’s Post

📎 Check Out the 10th paper published in the Special Issue "Geochemistry and Genesis of Hydrothermal Ore Deposits" in Minerals MDPI. 📜 Evolution of Auriferous Fluids in the Kraaipan-Amalia Greenstone Belts: Evidence from Mineralogical and Isotopic Constraints ✍ Authors: Kofi Adomako-Ansah, PhD, MSEG, MSGA, MSRG, MGhIG, MUTaG, Napoleon Q Hammond, Yuichi Morishita and Daizo Ishiyama 📍 More information about the paper can be found here: https://lnkd.in/ddhnApFB 📢 More information about Special Issue can be found here: https://lnkd.in/dHinmpiq 📚 Special issue is Edited by: Prof. Dr. Yuichi Morishita and Prof. Dr. Napoleon Q. Hammond University of Mines and Technology, Tarkwa University of Limpopo / Universiteit van Limpopo Shizuoka University Akita University ⚒ Follow Minerals MDPI for latest research. #callforpapers #mdpi #openaccess

Global constraints on exhumation rates during porphyry copper formation and supergene enrichment: applications to exploration as illustrated from the Central Andes Evenstar et al. (2024): ....This paper uses new global datasets and previous work to review the critical processes required for porphyry copper formation and supergene enrichment.  https://lnkd.in/eSSmyeff

Currently, I am working on a research paper focused on the geochemical footprints of hydrothermal processes within alteration zones of #VMS deposits in the Ariab region. A great value of the work lies in the novelty of the data from an interesting geographical region where several ophiolitic complexes and related lithological suites crop out. A work that could propose a general model of mineralization and alteration of #VHMS ore deposits in the Ariab region. As result of reviewing and enhancing the maps, I modified and redrew a map detailing the distribution of significant #VMS deposits across the Nubian Arabian Shield. This map provides valuable insights for mineral prospecting and exploration, pinpointing critical deposits within the region. It is intended to serve as essential advantage in the search for mineral discovery, guiding strategic exploration efforts. I would appreciate the chance to share it with you for feedback and suggestions for further improvement, as this map could offer valuable information for geologists and readers alike, with applications in both academic and the industrial sector.  

On behalf of my co-authors Marco Fiorentini, Stefano Caruso, Kim Baublys, Quentin Masurel, Nicolas Thebaud, and myself I am excited to share our recent Open Access contribution in Mineralium Deposita about assimilation, transport, metal upgrading, and deposition of crust-derived sulfides in komatiites. In this contribution we have characterised a large selection of sulfides from different crustal reservoirs and spatially linked them using S-isotopes to Ni-sulfide mineralisation in komatiites from the Agnew-Wiluna Greenstone Belt, Yilgarn Craton, Western Australia. The outcomes of the research highlights that the komatiites in this belt preferentially assimilated syn-volcanic VMS-style sulfides proximal to syn-rift growth faults, near which they were also deposited. We suggest that the VMS-altered zones around the growth faults were prime locations for enhanced thermo-mechanical erosion and sulfide assimilation, and they acted as fluid dynamic traps that sustained sulfide liquid recirculation and metal upgrading through silicate melt-sulfide liquid equilibration without the need for long lateral transport. The overall implication is an early structural control on the formation of komatiite-hosted Ni deposits, and we further suggest that S-isotopes may be utilised as a proxy towards the syn-rift growth faults in highly deformed Archean terranes. Thanks to BHP Billiton Nickel West Pty Ltd for permission to publish and to The University of Western Australia publishing agreement with Springer for making this paper available open access: https://lnkd.in/gSSc__Ea Enjoy and cheers

How do high-grade rare earth element (REE) accumulations develop in regolith? Our 📜 *New Open Access Paper* 📜 , published today in Mineralium Deposita, discusses just that! In it, we find that localised REE accumulations of 12.37% total rare earth oxide (TREO) at the Kapunda Cu Mine in South Australia formed in response to the evolution of highly-acidic (pH < 3) weathering fluids. Contrary to popular belief (which suggests that acidic weathering fluids should favour REE *mobilisation* in regolith), these fluids expedited the dissolution of primary phosphate minerals (likely apatite), which resulted in the massive liberation of phosphate into the weathering solution. This phosphate then combined with dissolved REEs to precipitate and accumulate highly insoluble secondary minerals like rhabdophane, monazite and florencite - even under acidic conditions! As a passion project of mine for over 5 years now (having started as my MSc thesis), I am beyond happy to finally see this work published as the first chapter of my PhD. A massive thanks goes to Fang Xia, Caroline Tiddy and Ignacio Gonzalez-Alvarez for their patience and supervision over this time, as well as to co-authors joel brugger, Siyu (Shirley) Hu, Louise Schoneveld, Mark Pearce and Andrew Putnis for all of their invaluable contributions.

Hi hello everyone I am here to share an article on Mineral The geological definition of mineral normally excludes compounds that occur only in living organisms. However, some minerals are often biogenic (such as calcite) or organic compounds in the sense of chemistry (such as mellite). Moreover, living organisms often synthesize inorganic minerals (such as hydroxylapatite) that also occur in rocks. The concept of mineral is distinct from rock, which is any bulk solid geologic material that is relatively homogeneous at a large enough scale. A rock may consist of one type of mineral or may be an aggregate of two or more different types of minerals, spacially segregated into distinct phases. Some natural solid substances without a definite crystalline structure, such as opal or obsidian, are more properly called mineraloids.[4] If a chemical compound occurs naturally with different crystal structures, each structure is considered a different mineral species. Thus, for example, quartz and stishovite are two different minerals consisting of the same compound, silicon dioxide. The International Mineralogical Association (IMA) is the generally recognized standard body for the definition and nomenclature of mineral species. As of March 2024, the IMA recognizes 6031 official mineral species

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American Mineralogist: Mineral and crystal chemical study of pseudo-C2/m non-metamict chevkinite-(Ce): An investigation into the intracrystalline distribution of LREE, HREE, and octahedral cations in samples from the Azores and Pakistan https://lnkd.in/gv8JX9dW X-ray structure refinements and consistent site occupancies data allowed Carbonin et al. to accurately calculate cation distribution in non-metamict chevkinite-(Ce). Crystal chemical studies help better understand the well-known ability of chevkinite to fractionate LREE from HREE and its importance in geochemical modeling (Macdonald and Belkin 2002). This study showed that heavier and smaller REE enter only the 8-coordinate A1 site. At the same time, however, particularly stretched bonds suggest the A1 polyhedron bond lengths are still too long for HREE.

New Findings from the STORECO2 Project! We are excited to share our recent contribution to the European Mineralogical Society (EMC) conference. Our research team presented an abstract titled "Metal mobility during serpentinite carbonation: evaluating recovery potential and environmental impact" The conference provided an invaluable opportunity to connect with fellow researchers, discussing the latest findings in geochemistry and mineralogy. Our presentation highlighted the mobility of potentially hazardous metals during mineral carbonation, contributing to the understanding of how to safely upscale these techniques. 🔗 For more details on our findings and to see the compositional map of carbonated serpentinite, visit our website: www.storeCO2.it Stay tuned for more updates on our ongoing research! #STORECO2 #MineralCarbonation #CriticalRawMaterials #EMC #Mineralogy #CarbonCapture https://lnkd.in/dVRpBjix

Publication Alert ! Alhamdulillah, Our research article titled "Understanding arsenic and manganese enrichment in the aquifers of the Ghaghara river basin, Middle Gangetic Plain (MGP), India: A multivariate statistical, compositional data analysis (CoDA), and receptor model approach" has been published in Journal of Geochemical Exploration. In this work, we utilize a novel approach integrating mathematical receptor models like #PositiveMatrixFactorization (PMF) and principal component analysis-multi linear regression #PCAMLR to discern properly the contributing factors causing groundwater quality deterioration in the Ghaghara river basin, located in MGP, India. Considering the compositional nature of Hydrochemical data, available raw data is processed using compositional data analysis #CoDa approaches, which give more insightful results than the classical statistical approaches. Through this comprehensive methodology, the research successfully identified the diverse natural and anthropogenic processes that influence the geochemical characteristics and enrichment of As, and Mn in the Ghaghara river basin, located in MGP, India. Link to article is: https://lnkd.in/gZZuPcs6