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Thallium is a chemical element; it has symbol Tl and atomic number 81. It is a silvery-white post-transition metal that is not found free in nature. When isolated, thallium resembles tin, but discolors when exposed to air. Chemists William Crookes and Claude-Auguste Lamy discovered thallium independently, in 1861, … See more
A thallium atom has 81 electrons, arranged in the electron configuration [Xe]4f 5d 6s 6p ; of these, the three outermost electrons … See more
Thallium (Greek θαλλός, thallos, meaning "a green shoot or twig") was discovered by William Crookes and Claude Auguste Lamy, working independently, both using flame spectroscopy … See more
Historic uses
The odorless and tasteless thallium sulfate was once widely used as rat poison and ant killer. Since 1972 … See more1. ^ "Standard Atomic Weights: Thallium". CIAAW. 2009.
2. ^ Prohaska, Thomas; Irrgeher, Johanna; Benefield, … See moreThallium(III)
Thallium(III) compounds resemble the corresponding aluminium(III) compounds. They are moderately … See moreThallium and its compounds are extremely toxic, with numerous recorded cases of fatal thallium poisoning. The Occupational Safety and Health Administration (OSHA) has set the legal limit (permissible exposure limit) for thallium exposure in the workplace as 0.1 … See more
Wikipedia text under CC-BY-SA license Thallium Long-Term Fate from Rock-Deposit to Soil: …
In the case of thallium (Tl), it has been shown that in natural Tl-rich sulfide deposits and those found in mining areas, Tl can be trapped by Tl-jarosite (Tl-rich iron sulfate) and dorallcharite (TlFe 3 (SO 4) 2 (OH) 6).
Mineralogical thallium geochemistry and isotope variations from …
Dec 15, 2018 · Thallium is a rare element in the Earth, with an average crustal abundance of 0.7 ppm (Shaw, 1952, Heinrichs et al., 1980, Wedepohl, 1995) and is primarily found as a trace …
- Author: Shelby T. Rader, Frank K. Mazdab, Mark D. Barton
- Publish Year: 2018
Thallium Speciation and Extractability in a Thallium- and Arsenic …
Apr 17, 2015 · We investigated the speciation and extractability of Tl in soil developed from mineralized carbonate rock. Total Tl concentrations in topsoil (0–20 cm) of 100–1000 mg/kg …
- Author: Andreas Voegelin, Numa Pfenninger, Julia Petrikis, Juraj Majzlan, Michael Plötze, Anna-Caterina Senn...
- Publish Year: 2015
Thallium Statistics and Information | U.S. Geological …
Thallium, a soft, bluish-gray, malleable heavy metal, was discovered by Sir William Crookes in 1861 while he was making spectroscopic determinations for tellurium on residues from a sulfuric acid plant.
The mineralogy of Thallium - mindat.org
Tl+ is concentrated in residual soils and sediments (less certainty.) Tl+ enters later phases in igneous rocks due to its large size. This table compares the known valid mineral species listed …
Abundance and fate of thallium and its stable isotopes …
This overview presents the updated physicochemical characteristics of thallium and its stable isotopes (205Tl/203Tl) in the context of their occurrence and fate in abiotic and biotic systems.
The geochemistry of thallium - ScienceDirect
Thallium occurs in igneous minerals and rocks by substitution for potassium. Its geochemical behaviour closely resembles rubidium, so that it is concentrated in residual magmas to occur …
Thallium: A potential guide to mineral deposits - ScienceDirect
Dec 1, 1983 · Thallium has been described in hydrothermal quartz veins of metallic ore deposits, generally associated to primary and secondary minerals (Tatsi and Turner, 2014; Vanek et al., …
Thallium: Mineralogy, Geochemistry and Ore Processes …
Aug 31, 2018 · Thallium (Z = 81) is either chalcophile or lithophile. It is widely distributed within the Earth’s continental crust and is more abundant than other well-known elements, such as Ag, Sb, and Hg. Nonetheless, its availability is …
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