crustal abundance | ScienceGate

The Chernogorsky jewelry scapolite deposit is located in the eastern part of the Central Pamir tectonic zone (the eastern part of the Republicof Tajikistan). A geochemical anomaly of cobalt and nickel of more than 55,000 m2was identified in the territory of the deposit. Within the anomaly, the metals were detected in all minerals, 95% of which belong to non-metallic minerals: olivine, enstatite, hornblende, phlogopite, calcite, dolomite, plagioclase, scapolite, potassium feldspar, nepheline, and sodalite. The deposit ore minerals comprise ilmenite, titanite, rutile, magnetite, hematite, pentlandite, pyrrhotite, and pyrite. The cobalt content is more than 20 times higher than its crustal abundance, and that of nickel is 10 times above its crustal abundance. It is recommended that the Ministry of Geology and the Ministry of Industry of the Republicof Tajikistanconduct the prospect evaluation to assess the prognostic resource potential for these elements. This allows to consider the deposit rocks (harzburgite, amphibolite and albitite) as cobalt-nickel geochemical anomaly. This anomaly should be the subject of greenfieldexploration for the elements. The deposit monomineral category may change to complex polymineral and polymetal category. This will significantly increase its investment attractiveness and economic feasibility.

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Thorium: Crustal abundance, joint production, and economic availability

Resources Policy ◽

10.1016/j.resourpol.2015.02.002 ◽

2015 ◽

Vol 44 ◽

pp. 81-93 ◽

Cited By ~ 12

Author(s):

Brett W. Jordan ◽

Roderick G. Eggert ◽

Brent W. Dixon ◽

Brett W. Carlsen

Keyword(s):

Joint Production ◽

Crustal Abundance

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Phosphorus and Iron Distribution in the Sediments of the Yellow River

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.713-715.2779 ◽

2015 ◽

Vol 713-715 ◽

pp. 2779-2784

Author(s):

Xu Yang Ma ◽

Xiao Hong Yang ◽

Ya Li Wu ◽

Ming Mei Han ◽

Hong Wei Yang

Keyword(s):

Yellow River ◽

Human Life ◽

Water Bodies ◽

Biogenic Elements ◽

Oxide Surface ◽

Limiting Factor ◽

Important Indicator ◽

Crustal Abundance ◽

Iron Iron ◽

Absorption Features

Sediment was important storeroom of pollutants and acted as the"source"and the"sink"role [1-2]. Phosphorus not only was a important biogenic elements but also a major limiting factor of water eutrophication.Primary productivity of water bodies was effected by phosphorus migration and circulation in interact of sea-land[3]. As we all known,crustal abundance of iron was 6.71% and ranked fourth, it was trace elements that played an important role in activities of human life, meanwhile ,growth of planktonic algae was limited by iron. Iron has a strong absorption features because of its oxide surface features .Circulation and transformation of phosphorus were effected by geochemical cycling of iron[4-6]. Studies have shown[7-8]that total of phosphorus and iron can be used as an important indicator what evaluated the degree of pollution. Released phosphorus of sediments was an important factor that effected nutritional status of water bodies. TP through physical,chemical,biological effected were combined with andiron and other minerals. So, determinating TP and TFe of sediment and analyzing its relevance were very important, it could further reveal the pollution status of water and analysis the pollution trends .

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Solvation, Rational Design, and Interfaces: Development of Divalent Electrolytes

Frontiers in Energy Research ◽

10.3389/fenrg.2021.802398 ◽

2022 ◽

Vol 9 ◽

Author(s):

Noel J. Leon ◽

Mingfu He ◽

Chen Liao

Keyword(s):

Energy Storage ◽

Lithium Ion Batteries ◽

Recent Work ◽

Rational Design ◽

Lithium Ion ◽

Focal Points ◽

Crustal Abundance ◽

Electrochemical Cycling ◽

Further Development ◽

The Ideal

Rechargeable multivalent ion batteries are promising tools to complement current lithium-ion batteries for a future of diverse energy storage needs. Divalent Mg and Ca are attractive candidates for their high crustal abundance, high volumetric anode capacity, and infrequent dendrite formation during electrochemical cycling. Electrolyte research is central to these efforts and continually improves coulombic efficiencies towards the ideal 100%. This mini-review discusses recent work towards fundamental understandings that push these chemistries towards practical use. Piecing together compatible cathode and electrolytes for a complete practical multivalent ion battery lacks a cohesive method for further development and refinement. Understanding liquid solvation, utilizing rational design, and probing interfacial interactions are focal points that govern electrolyte performance. The combination of these areas will be critical for meaningful development.

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Regional variation in the crustal abundance of minor elements: evidence from the granites of Sardinia

Mineralogical Magazine ◽

10.1180/minmag.1975.040.311.09 ◽

1975 ◽

Vol 40 (311) ◽

pp. 293-301 ◽

Cited By ~ 5

Author(s):

A. Hall

Keyword(s):

Regional Variation ◽

Source Region ◽

Magmatic Source ◽

Minor Elements ◽

Lead And Zinc ◽

Crustal Abundance ◽

Close Relationship ◽

Copper Lead

SummaryThe granites of Sardinia have been analysed for copper, lead, and zinc, and each element has been found to show a regional variation. There is a close relationship between the copper and lead contents of the granites and the distribution of copper and lead mineralization in the island, but very little relation between the zinc contents of the granites and the distribution of zinc mineralization. This is attributed to a greater degree of lithophile character of zinc in the magmatic source region.

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26 Al: measurement and applications

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences ◽

10.1098/rsta.1987.0077 ◽

1987 ◽

Vol 323 (1569) ◽

pp. 121-143 ◽

Cited By ~ 47

Keyword(s):

Cosmic Rays ◽

Solar Flares ◽

Diagnostic Value ◽

University Of Pennsylvania ◽

Production Rates ◽

The Earth ◽

Crustal Abundance ◽

The University ◽

Very High

26 Al(r1/2 = 0.7 Ma), like 10 Be (r1/2 = 1.5 Ma), is produced by cosmic rays in the atm osphere, but its production rate is low ( ca 4 x 10 -3 that of 10 Be) and the crustal abundance o f 27 Al is high, resulting in 26 A1:27Al ratios rarely exceeding 10 ~14 . Both isotopes are also produced in surficial rocks by cosmic rays; in quartz the production rates of 26 Al and 10 Be are ca . 70 atoms g -1 a -1 and ca . 10 atoms g -1 a -1 , respectively (at sea level). Because quartz frequently contains 27 Al at less than 100 p.p.m. (by mass), the 26 Al : 27 A1 ratio resulting from this situ production can be as high as 3 x 10 -11 . In extraterrestrial m atter, where the production rates are several hundred times greater, samples containing a few percent o f 27 Al have 26 Al: 27 Al ratios of 10 -11 or larger. We describe an experim ental arrangem ent that was developed at the University of Pennsylvania for measuring 26 A1: 27 Al ratios as low as 10-15. The size requirements for samples are approximately a factor of 100000 smaller than those of decay counting, and measurement times are less than an hour, compared with weeks or months. We discuss several applications of the technique to the measurement of terrestrial as well as extraterrestrial samples. Emphasis is placed on the combined measurement of 10 Be and 26 Al and the various uses to which the ratio o f 26 Al: 10 Be in a sample can be put. In particular, we discuss the very high 26 Al: 10 Be ratios that are found in the outer few millimetres of extraterrestrial bodies, resulting from low-energy protons emitted by solar flares, and the diagnostic value of these ratios in determining the size of objects in space. The low value of the 26 A1: 10 Be ratio resulting from atmospheric production is used to prove the terrestrial origin of tektites. And finally, we discuss the manner in which the variable 26 Al: 10 Be ratio that results from in situ production in objects on the Earth ’s surface can be used to measure rates of weathering and exposure histories.

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