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Topic Review
Cracking of Gem Opals
The value of gem opals is compromised by their potential susceptibility to “crazing”, a phenomenon observed either in the form of whitening or cracking.
  • 148
  • 04 Mar 2024
Topic Review
Antimony as a Critical Raw Material
Antimony is widely acknowledged as a critical raw material of worldwide significance, based on its recognition by many countries. According to current projections, there is an anticipated increase in the demand for antimony in the forthcoming years. An issue of significant concern within the supply chain, which poses a substantial obstacle to sustainable development, is the global unequal allocation of abundant antimony resources. Most nations exhibited a high degree of dependence on a few countries for their net imports of antimony, resulting in a notable disruption and raising concerns regarding the supply chain. 
  • 566
  • 23 Feb 2024
Topic Review
Innovation and Drivers of Productivity
Innovation and technology are important tools for delivering efficiency and productivity improvement in the minerals sector. The uptake of technologies has proven to be an important lever for increasing the productivity of the mining sector.
  • 90
  • 08 Dec 2023
Topic Review
Dolomite Mineralogy
Dolomite [CaMg(CO3)2] is a rhombohedral carbonate mineral. The dolomite structure consists of an ordered arrangement of alternating layers of Ca2+ and Mg2+ cations interspersed with CO32− anion layers normal to the c-axis, which is in contrast to the disordered distribution of Ca2+ and Mg2+ in the (high-Mg) calcite structure.
  • 151
  • 04 Dec 2023
Topic Review
Knife Handle Working Face
With the rapid development of the social economy, the demand for coal is also increasing. Due to large-scale mining in shallow areas, coal resources are being increasingly depleted. Coal mines are gradually being mined in deep areas. Due to the complexity of coal seam conditions and variability, in order to reduce the loss of coal resources and the amount of moving, and to ensure the efficient mining of mines, the knife handle-type working face came into being. The complex overlying rock structure after the mining of the knife handle-type working face has brought great difficulties to the control of the surrounding rock of the working face.
  • 142
  • 08 Nov 2023
Topic Review
Potential Challenges to Agronomic Biofortification
Agronomic biofortification is the strategy to enhance the micronutrient contents in the edible parts of food crops through the application of mineral fertilizers. Agronomic biofortification can enrich crops with multiple elements, but the most common ones are Fe, Se, Zn, and I. It may be a suitable approach to reach resource-poor rural populations, provided they have access to chemical fertilizers. Soil-to-plant transfer and the accumulation of minerals in the edible portion of food crops determine the success of biofortification. In addition, the bioavailability of minerals from biofortified crops in the body influences the effectiveness of biofortification programs.
  • 1.5K
  • 07 Nov 2023
Topic Review
Respirable Coal Mine Dust Lung Deposition
Respirable Coal Mine Dust (RCMD), with a specific focus on examining particle deposition across different regions of the airway system and lungs. The interplay of several critical factors, including particle characteristics and an individual’s breathing patterns, plays a pivotal role in determining whether particles settle in the lungs or are exhaled. 
  • 144
  • 25 Oct 2023
Topic Review
NdFeB Permanent Magnet Uses
Rare earth element (REE) permanent magnets (NdFeB) are a critical element in a vast and growing number of industrial applications. In consumer electronics, a broad category encompassing computer, CD, and DVD hard drives, in addition to the ubiquitous cell phones, the nominal NdFeB magnet content may be small, but the global market share for this sector accounts for almost 30% of NdFeB demand, due to a large and continually increasing consumer base. It is estimated that wind turbines that primarily employ permanent magnets will add roughly 110 GW annually of on- and off-shore capability over the next few years. Electric vehicles (EVs) and E-bicycles (EBs) equipped with permanent magnet motors comprise the transportation contribution. Permanent magnet motors have garnered nearly 100% of the market share among EV manufacturers worldwide. Industrial, professional service, and personal robots, most using permanent magnets, are also included in the projected global need for rare earths, particularly Nd and Dy.
  • 476
  • 16 Oct 2023
Topic Review
Primary Rare Earth Elements Resources
Rare earth elements (REEs) are national strategic resources widely applied in industries such as petrochemicals, electronics, national defense and new energy. The primary REE resources are monazite, bastnaesite, xenotime and ion-adsorption type rare earth ore.
  • 151
  • 15 Sep 2023
Topic Review
Role of Basalt Geochemistry in CO2 Storage
The geochemistry of basalt plays a crucial role in the storage of CO2, as it possesses natural properties that enable the capture and sequestration of CO2. Basalt exhibits a remarkable ability to react with CO2 and form stable carbonate minerals, a process known as mineral carbonation or carbon sequestration.
  • 345
  • 06 Sep 2023
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