Placer Mineral Deposits
A placer deposit or placer is a type of mineral deposit formed by mechanical concentration of mineral particles from weathered debris.
Ore Geology
Rare Metal and Rare Earths
Rare metals are naturally occurring metallic elements that are considered relatively scarce or challenging to extract.
Skarn Deposits
What is a Skarn Deposit? A skarn deposit is a type of ore deposit that is either directly associated with skarn rock or formed by processes related to skarn formation. Skarns are coarse-grained rocks formed by metasomatism process when carbonate-rich country rocks, typically limestone or dolomite which are altered by hot, ore bearing hydrothermal solution. … Read more
Hydrothermal Ore Deposits
Introduction A mineral deposit precipitated from hot, aqueous solution is called hydrothermal solutions. These solutions can originate from various sources, including: Sources of Hydrothermal Fluids The hydrothermal fluids can originate from various geological processes and locations. The Process of Hydrothermal Ore Deposit Formation The formation of a hydrothermal ore deposit is a complex process that … Read more
Metallogenic Epocs and Provinces
Metallogeny is the study of the genesis of mineral deposits, with emphasis on their relationship in space and time to regional petrographic and tectonic features of the Earth’s crust. The term has been used for both metallic and nonmetallic mineral deposits.
Primary Dispersion Halos and Secondary Dispersion Halos
The term “dispersion” describes how elements disseminated outwards from the place of its origin. A “dispersion halo” is defined as a region surrounding a mineral deposit, characterized by metal concentrations that are lower than the deposit itself but are comparatively higher than the background levels in the surrounding rocks. Dispersion halos can be classified as … Read more
Metallogeny through Time
Metallogeny is the study of how mineral deposits form and are distributed across regions and globally, focusing on their relationship to the Earth’s crust’s petrologic and tectonic features over time and space. The evolutionary sequence of changes in the Earth’s crust and mantle over geological time is now widely recognized. These transformations have played a … Read more
Manganese Nodules – Origin and Nature of Manganese Deposits on the Seafloor
Manganese concentrations in the seafloor are particularly well developed in deep, calm waters far from continental margins and active volcanic ridges. Manganese deposits form in ocean basins that receive little sediment that would otherwise bury them. Such areas include abyssal plains and elevated areas of the seabed, such as seamounts and isolated shallow shoals. Potential … Read more
What is the difference between resource and reserve in geology?
A mineral reserve is a portion of a mineral resource that has been demonstrated to be economically and legally extractable under current socio-economic and operating conditions.
Lithium – Minerals, deposits, mining and use of lithium
Lithium minerals are naturally occurring compounds that contain economically significant concentrations lithium in various forms, including lithium carbonate, lithium hydroxide, and lithium chloride. The most common lithium minerals include: Lithium Minerals It has been studied those concentrations exceeding 0.5% are feasible to extract lithium. Lithium deposits Lithium deposits are natural concentrations of lithium in rocks, … Read more