Abstracts from the 2017–2018 Mineral Deposits Studies Group meeting

Introduction.- Part-I: Essentials of Mineralogy.- Minerals and Their Chemical Classification.- Mineral Crystals and Structural Classification.- Mineral Chemistry.- Physical Properties.- Optical Mineralogy and Its Uses.- Special Mineral Properties and Related Structures.- Descriptive Mineralogy.- Part - II: Mineral Transformations and Their Effects.- Energetics, Thermodynamics and Stability of Minerals.- Origin of Minerals and Their Transformations in Nature under various Environmental Conditions.- Mineral Deposits and Their Characteristics.- Marine Minerals in Different Environments.- Minerals and Mineral Associations as Geothermometers and Geobarometers.- Part-III: Mineral Analysis, Industry and Environment.- Common Analytical Techniques in Mineralogical Studies.- Precious and Semiprecious Stones.- Mineralogy in Exploration of Mineral Deposits using Magnetic, Electrical and Gravitational Properties.- Synthesis of Selected Minerals (Crystals) in Laboratory and Industry.- Industrial Mineralogy: Mineral Processing, Beneficiations and Other Related Mineral Usage.- Environmental Mineralogy.- Concept of Geomedicine and Medicinal Mineralogy.

Mineral processing

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Citations (41)

An estimation of the variability in automated quantitative mineralogy measurements through inter-laboratory testing

Minerals Engineering (2016)

R. Lastra Doğan Paktunç

10.1016/j.mineng.2016.06.025

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Citations (20)

Mineralogy - Its Application in Mineral Benficiation

N Chakrovorty

Minerals are the starting units to which the art and science of Mineral Beneficiation are applied and there-fore, a basic study of mineralogy is an essential pre-requisite to fully comprehend the different processes involved in mineral beneficiation. As defined by Dana1 A Mineral is a body produced by the processes of inorgan nature, having usually a definite chemical composition and if found under favourable conditions, a certain characteristic atomic structure which is expressed in its crystalline form and other physical properties. A study of mineralogy therefore encompasses (1) Crystallography, (2) Physical Mineralogy, (3) Chemical Mineralogy, (4) Occurence of Minerals and (5) Descriptive Mineralogy. Optical Mineralogy, texture and liberation as well as the physical characters are important in mineral beneficiat-ion.

Beneficiation

Texture (cosmology)

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Crocoite: an unusual mode of occurrence for lead in coal

International Journal of Coal Geology (2001)

Zhongsheng Li Tim A. Moore S. D. Weaver Robert B. Finkelman

10.1016/s0166-5162(00)00024-0

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Citations (27)

Estimation of Mineral Accessible Surface Area from Mineral Abundance and Clay Content

ACS Earth and Space Chemistry (2023)

Fanqi Qin Md Fahim Salek Parisa Asadi Chidera Iloejesi Olivia Brunhoeber

The mineral reactive surface area is often quantified through a wide range of approaches (e.g., Brunauer–Emmett–Teller adsorption, geometry approximation, and imaging techniques). As such, values vary 1–5 orders of magnitude which can result in large discrepancies when used in reactive transport models to simulate geochemical reaction rates. Simulations carried out using mineral accessible surface areas (ASAs) determined from a coupled 2D and 3D imaging approach have shown better match with reaction rates measured in core-flood experiments. However, such image processing requires large amounts of time and resources. In this work, the possibility of estimating mineral ASAs from easily measured properties like mineral abundance and porosity is explored. Six sandstone samples of varying compositions were studied along with data from three additional samples from the previous literature. Mineral ASAs were quantified using a combined 2D scanning electron microscopy and 3D X-ray nano-computed tomography imaging approach. Sample properties like mineral accessibility, mineral ASAs, connected porosity, and clay content were compared to explore potential correlations between properties. Overall, it was observed that mineral accessibility can be predicted where feldspar mineral accessibility generally increases with increasing abundance and quartz accessibility decreases with increasing clay content. Mineral ASAs vary between samples, depending on the relative abundance of minerals and overall pore connectivity. While the ASA of quartz decreases with abundance, albite and carbonate mineral ASAs increase with abundance. Quantitative observations, including predictive relationships for ASAs from porosity and mineral volume fraction, are developed. Estimations of ASAs and mineral accessibility from more easily quantifiable properties can largely reduce the required extent of image analysis.

10.1021/acsearthspacechem.2c00181

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Citations (4)

Mineralogical and chemical heterogeneity of three standard clay mineral samples

Clay Minerals (1996)

Heinrich M. Köster

Abstract Mineralogical and chemical heterogeneity within three standard clay mineral samples have been identified by X-ray diffraction and chemical analysis of various size-fractions. This heterogeneity is partly attributed to accessory minerals, but mostly to structural and compositional variations in the 2:1 layer minerals of different particle size in the same specimen.

Structural formula

10.1180/claymin.1996.031.3.11

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Citations (20)

KETERDAPATAN DAN TIPE MINERAL PADA BATUBARA SERTA METODE ANALISISNYA

Jurnal Teknologi Technoscientia (2011)

Edy Nursanto Arifudin Idrus Donatus Hendra Amijaya Subagyo Pramumijoyo

Coal is sediment composed by organic and inorganic materials with organic contents that more than 50%.The organic matters are derived from the remaining plants and have been decomposition and changes in physical and chemical properties. Based on their abundance, then the minerals in coal can be divided into primary minerals (major minerals), extra minerals minor minerals) and trace minerals. Consist of the major minerals are clay minerals and quartz while the minor minerals are carbonates, sulfides and sulfates. Analysis that used for mineral in coal is Microscopic optical, Scanning Electron Microscopic (SEM), Electron Probe Micro Analyzer (EPMA), and x-ray Diffraction (XRD).

Silicate minerals

Carbonate minerals

10.34151/technoscientia.v4i1.124

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Citations (4)

Grindability characterization and work index determination of alluvial ferro-columbite deposits for efficient mineral processing

Physicochemical Problems of Mineral Processing (2023)

Nnaemeka Stanislaus Nzeh Abraham Adewale Adeleke A.P.I. Popoola

This study emphasizes on the physicochemical and grindability characteristics and work index of an alluvial formed silica dominated ferro-columbite mineral from Rayfield-Jos minefields in Plateau state, Nigeria. Investigations were also carried out in order to determine the mineralogy of the mineral deposits and most essentially the actual energy consumed during comminution and milling of the mineral so as to achieve the liberation size prior to high efficient mineral processing or beneficiation and the extraction of value metals. The distribution of the mineral particles as well as their sizes was determined, with a mineral liberation size fraction range essentially established as -150+90 µm particle sizes. Mass percentage of each size fraction obtained from PSD analysis conducted before and after comminution was also determined, obtaining 80% passing for both the mineral feeds and comminuted products. Berry and Bruce modified Bond’s work index was therefore obtained, and was determined to be within the range of 2.0414 to 2.5667 kWh/ton. Hence, the energy consumed or required to comminute or grind the Fe-columbite mineral to 80% passing is expected to fall within the range of 0.3613 to 0.4543 kWh. Thus, it could be said that a low milling work index as well as moderately low energy is required for comminution and this can be attributed to the mineralogy, mineral source and alluvial formation of the mineral reserve. Therefore, the grindability/PSD result of the mineral sample indicates that its mineralogy is considered a class of moderately soft mineral type in terms of texture with easy grindability.

Comminution

Beneficiation

Grind

Mineral processing

Columbite

10.37190/ppmp/170297

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Citations (1)