204 Thallium

A soft, silvery-white metal that tarnishes easily.
The use of thallium is limited as it is a toxic element. Thallium sulfate was employed as a rodent killer – it is odourless and tasteless – but household use of this poison has been prohibited in most developed countries.
 Most thallium is used by the electronics industry in photoelectric cells. Thallium oxide is used to produce special glass with a high index of refraction, and also low melting glass that becomes fluid at about 125K..
Biological role
Thallium has no known biological role. It is very toxic and they’re is evidence that the vapour is both teratogenic (disturbs the development of an embryo or foetus) and carcinogenic. It can displace potassium around the body affecting the central nervous system.
Natural abundance
Thallium is found in several ores. One of these is pyrites, which is used to produce sulfuric acid. Some thallium is obtained from pyrites, but it is mainly obtained as a by-product of copper, zinc and lead refining. Thallium is also present in manganese nodules found on the ocean floor.

The lorandite (THALLIUM CRYSTAL) from the mine can register in a chemical and physical way the so called neutron flux coming from the Sun. It is the only known substance that has this power. If the neutron could be explored, science could understand the processes that go on inside the Sun. Some say with awe that it could lead understanding the past but also the future of our galaxy.

How did it ever get they’re, and only they’re? On a mountain (Kozuf) in the southern Balkans. One assumption, again resembling a movie scenario, is that – it fell from the Sun, as a result of eruption a billion years ago.

 origin of the element’s name (from Greek ‘thallos’, meaning ‘a green shoot or twig’), its toxicity and it’s use in the manufacture of reflective glass.





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