Mineral Resource of the Month: Iodine - EARTH Magazine
2018年6月14日 · Although not abundant in quantity, iodine, a bluish-black lustrous solid, is found almost everywhere. It is present in animal tissue, food, plants, rocks, soils and water. Except for a few rare occasions, however, iodine almost never occurs independently in nature.
Iodine in some common rock-forming minerals. | Download Table
Iodine forms few independent minerals and is unlikely to enter most rock-forming min... ... iodine content of some common rock forming minerals is given in Table 3, and the abundance of...
(PDF) The geochemistry of iodine - ResearchGate
1986年6月1日 · Iodine forms few independent minerals and is unlikely to enter most rock-forming minerals. In igneous rocks its concentration is fairly uniform and averages 0.24 mg/kg. Sedimentary rocks...
Iodine in granitic and associated rocks - ScienceDirect
1978年1月1日 · 48 samples of granitic and associated rock types have been analysed for iodine. Granites from the British Isles (mean 0.27 ppm) are generally richer in I than granites from other areas of the world (mean 0.10 ppm), the highest values being recorded for granites from North Wales (up to 0.72 ppm).
Iodine in some common rock types. | Download Table
In our study, we analyzed iodine isotopes and incorporated additional indicators such as element content in PM2.5 samples. Our findings reveal, for the first time, that in winter inland areas,...
The geochemistry of iodine - a review - PubMed
Sedimentary rocks tend to have higher concentrations with average iodine contents of:-recent sediments 5-200 mg/kg, carbonates 2.7 mg/kg, shales 2.3 mg/kg and sandstones 0.8 mg/kg. Organic-rich sediments are particularly enriched in iodine.Soils, generally, are much richer in iodine than the parent rocks with the actual level being decided ...
The distribution of iodine in the earth's crust - ScienceDirect
1998年5月25日 · Biogenic accumulation and volatilization of iodine from metamorphosed sediments and magmatic rocks has caused extreme gradients of concentrations towards the top of the oceanic and continental crust.
The iodine content of some common rock forming minerals is given in Table 3, and the abundance of iodine in some igneous, sedimentary and metamorphic rocks is given in Tables 4, 5 and 6. In these tables results from early works should be used with caution.
Iodine (I) [Z = 53] - Springer
2022年4月12日 · Iodine is rarely found independently in nature, and is often combined with other elements, basically forming inorganic salts. Mainly obtained from caliche (rock with saltpeter [sodium potassium nitrate and calcium iodate]) in northern Chile (Fig. 26.1), and from iodides in brine from the natural gas fields of Minami Kanto (Japan).
Iodine (and Other Halogens) in Twenty Six Geological Reference ...
Iodine concentration found in sedimentary rocks cannot be found in any rock-forming mineral and cannot be absorbed in clays. Shales generally contain high iodine concentrations ranging from 1 to 20 ppm. High iodine concentrations have been measured in shales containing kerogen, the primary organic matter.