Geology, Geochemistry and Formation of Supergene Mineral Deposits in Deeply Weathered Terrain
Springer International Publishing (Verlag)
9783031757327 (ISBN)
This book provides a comprehensive overview of the major supergene mineral deposits formed in intensely weathered lateritic terrains. It discusses both contemporary and pre-existing supergene deposits, describing their geological, mineralogical and geochemical characteristics. Supergene processes of enrichment are those that occur under ambient near-surface conditions, compared to hypogene processes mostly at depth under higher temperatures and pressures. Supergene processes include the predominance of meteoric water circulation with concomitant oxidation and chemical weathering. Descending meteoric waters oxidize the primary (hypogene) minerals and redistribute the chemical elements. Residual supergene enrichment occurs as a physical process when the predominant rock-forming minerals oxidize and dissolve, concentrating ore elements hosted in resistant stable minerals; absolute chemical enrichment occurs when the ore elements themselves are leached and migrate in groundwater and precipitate due changes in the pH, oxidation potential and chemical composition of water. These processes can enrich commercially important elements to produce orebodies formed entirely by supergene processes. These include Al (bauxite), Fe ore, Ni-Co laterites, kaolinite, REE (clay deposits), Nb and REE (on carbonatites), <
Rob Bowell is Corporate Consultant with SRK Consulting and an adjunct professor in the Department of Geological Sciences and Geological Engineering at Queen's University, Kingston, Ontario, Canada and a research fellow of the Queen's Facility for Isotope Research. He has 35 years of experience in the global mining industry. His background is in exploration and mining in tropical and deeply weathered terrain's including extensive work in Equatorial and Southern Africa, South America and Southeast Asia. He holds degrees in chemistry, geology, chemical engineering and a PhD in geochemistry on the occurrence of oxide gold deposits in Ashanti, Ghana. He has worked for TCL, Ashanti and Minorco prior to joining SRK. For the last 29 years he has worked in mining consulting in the fields of due diligence, financial and technical audits, process chemistry, environmental geochemistry, environmental engineering and mineralogy. Specializes in the application of chemistry and mineralogy to solve engineering problems. Has been involved in the discovery of copper projects that have been developed into mines in DRC, Namibia and Zambia and discovered Gold and Diamond deposits in the Dodoma region of Tanzania and in northern Mozambique. He is currently involved in the development of the Kuene Copper districty in Northern Namibia. He has authored/coauthored over 250 papers, edited monographs and reports including one on Arsenic as Reviews in Mineralogy & Geochemistry, volume 79 and edited as well contributed to volumes on applied chemistry/geochemistry for Nova Publishing series on chemical elements. He is deputy chief editor for Geochemistry, Exploration, Environment and Analysis and past president of the Association of Applied Geochemists.
1 Introduction.- 2 Geochemistry of supergene processes.- 3 Geology of supergene deposits.- 4 Formation of supergene deposits.- 5 ulfide oxidation and gossan formation.- 6 Tropical weathering model (lateritic, ferrasol and podsol sub-types).- 7 Glaciation weathering model and profile denudation.- 8 Caliche weathering model.- 9 Groundwater mobilization and enrichment.- 10 Surface water physical erosion model.- 11 Immature digenesis model.
| Erscheinungsdatum | 29.05.2025 |
|---|---|
| Reihe/Serie | Mineral Resource Reviews |
| Zusatzinfo | VIII, 420 p. 234 illus., 214 illus. in color. |
| Verlagsort | Cham |
| Sprache | englisch |
| Maße | 178 x 254 mm |
| Themenwelt | Naturwissenschaften ► Geowissenschaften ► Geologie |
| Schlagworte | Chemical weathering • Hypogene Processes • Low Temperature Geochemistry • Mineralogy • supergene processes |
| ISBN-13 | 9783031757327 / 9783031757327 |
| Zustand | Neuware |
| Informationen gemäß Produktsicherheitsverordnung (GPSR) | |
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