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critical metals

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Journal Article
Journal: Elements
Published: 01 October 2018
Elements (2018) 14 (5): 313-318.
... arises from their polymetallic nature, high concentrations of critical metals (introduced by Lusty and Murton 2018 this issue), and huge estimated global metal resources ( Fig. 3 ). Cobalt, a metal of low abundance in the continental crust, is classified as critical by the European Union. It is currently...
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Journal Article
Published: 01 May 2018
Mineralogical Magazine (2018) 82 (S1): S61-S87.
... entitled ‘Critical-metal mineralogy and ore genesis’. The Applied Mineralogy Group of the Mineralogical Society and the IMA Commission on Ore Mineralogy have contributed to the costs of Open Access publication for this paper. Fig. 3. ( a ) Photomicrograph of zoned pyrite crystals from sample DDH51...
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Series: Special Publication
Publisher: Society of Economic Geologists (SEG)
Published: 01 January 2018
DOI: 10.5382/SP.21.02
EISBN: 9781629496405
... In terms of primary production, furthering our understanding of the economic geology of the critical metals is an essential step in understanding the critical metal potential of mineral deposits that are already being exploited. Research by both academia and industry on the processes that control...
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Journal Article
Journal: Elements
Published: 01 October 2017
Elements (2017) 13 (5): 313-318.
.... The main drivers for responsible mining of most critical metals are not responsible sourcing initiatives from consumers but the need for mining companies to (1) satisfy investment banks in order to raise capital, (2) gain informal approval (social licence to operate) from their host communities, and (3...
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Journal Article
Journal: Economic Geology
Published: 01 September 2014
Economic Geology (2014) 109 (6): 1801-1802.
...Richard J. Goldfarb Chapter 2 by Humphries describes the mining industry and its abilities to meet changes in demand. It emphasizes the major commodities because by-product critical metals are dependent on the economics of the base and precious metal mining operations. As expected...
Journal Article
Published: 01 February 2015
Geochemistry: Exploration, Environment, Analysis (2015) 15 (1): 39-53.
..., and Ti anomalies were observed ( Figs 9–11 ). Heavy mineral analysis has shown that magnetite, ilmenite and some galena, pyrite and sphalerite are the main metallic minerals found in the gabbroic intrusive body of ν 1 . Similar results were reported for the Xinjie intrusion in the Emeishan flood...
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Journal Article
Published: 01 January 2006
Reviews in Mineralogy and Geochemistry (2006) 64 (1): 179-221.
... photon leads to the slow dissociation of hydrogen peroxide at room temperature (this is the reason H 2 O 2 solutions are typically stored in the dark). The addition of a reduced transition metal, such as ferrous iron and cupric copper leads to a heterolytic decomposition with OH − and · OH as products...
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Journal Article
Published: 01 January 2013
American Mineralogist (2013) 98 (1): 154-162.
... salt solution via the same precursor at industrial scale ( Buxbaum 1998 ; Myerson 2002 ). This suggests that the transformation of ferrihydrite into hematite is critical for the crystal growth of hematite in both industrial and environmental settings. The mechanism and kinetics of the transformation...
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Series: European Mineralogical Union Notes in Mineralogy
Published: 01 January 2017
EISBN: 9780903056663
... airborne pulmonary toxins activate remarkably similar pathobiological pathways in the lung epithelium, we highlight relevant distinctions between toxins. We begin by summarizing briefly the evidence implying that the extent of AEC injury and inadequate repair are critical determinants of the fibrogenic...
Journal Article
Published: 01 October 1960
American Mineralogist (1960) 45 (9-10): 946-959.
... determinations shows that on continuous heating at 6°C. per minute, fibered cryptomelane does not transform completely to bixbyite before the formation of hausmannite begins. At this heating rate, the critical temperature for formation of bixbyite from the acicular crystals of cryptomelane is approximately 600°C...
Journal Article
Published: 19 October 2017
Quarterly Journal of Engineering Geology and Hydrogeology (2017) 50 (4): 460-471.
...Jianxiu Wang; Xiaotian Liu; Yunhua Jiang; Jie Chen; Qiwu Chen; Simin Jiang; Nianqing Zhou Abstract It is vital to determine the critical distance between a mining roadway and a natural vertical water-blocked body (VWBB) where a substantial water level difference and seepage gradient have developed...
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Journal Article
Journal: Clay Minerals
Published: 01 September 2018
Clay Minerals (2018) 53 (3): 505-514.
.... ( 2013 ) Recycling of rare earths: a critical review . Journal of Cleaner Production , 51 , 1 – 22 . Bruque S. ( 1980 ) Factors influencing retention of lanthanide ions by montmorillonite . Clay Minerals , 15 , 413 – 420 . Castor S.B. ( 2008 ) Rare earth deposits of North...
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Journal Article
Published: 01 February 2016
Mineralogical Magazine (2016) 80 (1): 1-4.
...Kathryn M. Goodenough; Frances Wall Despite a significant focus on research and exploration since the ‘rare earths crisis’ of 2009–10 ( Gschneidner Jr., 2011 ), REE production is still almost entirely concentrated in China, and the REE are still considered among the most critical metals...
Journal Article
Journal: Geology
Published: 28 February 2019
Geology (2019) 47 (4): 330-334.
... been reported to exert a critical influence on silica precipitation and texture development ( Lynne, 2012 ; Nicolau et al., 2014 ; Campbell et al., 2015 ; Sanchez-Yanez et al., 2017 ; Lynne et al., 2019 ). Particularly, high evaporation and high cooling rates of thermal waters enhance silica...
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Series: Special Publications of the Society of Economic Geologists
Published: 01 January 2014
DOI: 10.5382/SP.18.05
EISBN: 9781629499291
... fluids containing varying concentrations of nonmetallic species. In this paper, we review briefly the properties of H2O and more extensively the speciation of selected base metals (metals that are easily oxidized and industrially important), precious metals, and critical metals (metals that are in short...
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Journal Article
Published: 01 May 2018
Mineralogical Magazine (2018) 82 (S1): S1-S4.
...John F. W. Bowles; Nigel J. Cook; Krister Sundblad; Erik Jonsson; Eimear Deady; Hannah S. R. Hughes * E-mail: John.Bowles@manchester.ac.uk C ritical raw materials (CRM), often also known collectively as critical metals and minerals, are those that are deemed essential to industry...
Journal Article
Journal: Geophysics
Published: 13 February 2018
Geophysics (2018) 83 (2): B47-B57.
... ophiolite: A critical updated view (in Chinese with English abstract): Acta Petrologica Sinica , 30 , 293 – 325 . Wu Q. , 2006 , A Study on the prospecting direction and method of chromium deposit in Xizang (Tibet) (in Chinese with English abstract): Shanghai Geology , 27 , 58 – 63...
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Series: SEPM Special Publication
Published: 01 January 2005
DOI: 10.2110/pec.05.82.0243
EISBN: 9781565762183
... an important modern analog for source-rock deposition in tropical lacustrine environments. In order to test models for source-rock deposition and to improve our understanding of critical processes, we have applied a computer model to simulate deposition of organic carbon in Lake Tanganyika that combines...
Biogeochemical pathways and processes of <b>metals</b> in the <b>critical</b> zone. Me = ...
in > Elements
Published: 01 September 2005
FIGURE 1 Biogeochemical pathways and processes of metals in the critical zone. Me = metal. Tiny green blobs = metal ion; brown blobs = soil particles; orange blob = colloid.
Series: Reviews in Economic Geology
Published: 01 January 2016
DOI: 10.5382/Rev.18.07
EISBN: 9781629490922
... an increasingly important role as suppliers of some of these metals. The affinity of these metals and the larger size and greater number of porphyry Cu deposits suggest that they will remain more significant than porphyry Mo deposits in supplying many of these critical metals. Porphyry Cu systems...
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