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Tellurium is a chemical element; it has symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens. It is occasionally found in its native form as elemental crystals.
Abundance (atom fraction) of the chemical elements in Earth's upper continental crust as a function of atomic number; [5] siderophiles shown in yellow Graphs of abundance against atomic number can reveal patterns relating abundance to stellar nucleosynthesis and geochemistry.
Tellurite is a rare oxide mineral composed of tellurium dioxide (Te O 2).. It occurs as prismatic to acicular transparent yellow to white orthorhombic crystals. It occurs in the oxidation zone of mineral deposits in association with native tellurium, emmonsite and other tellurium minerals.
The deposits are found at depths of 600–7,000 m (2,000–23,000 ft) and form 'carpets' of polymetallic rich layers about 30 cm (12 in) thick at the feature surface. Crusts are rich in a range of metals including cobalt, tellurium, nickel, copper, platinum, zirconium, tungsten, and rare earth elements.
Telluric silver glance — hessite, [2]: 338 a rare ore mineral, telluric silver. Discovered in 1829, in the mines of Western Altai . Telluride silver glance (also written or graphic glance) — is sylvanite , [ 2 ] : 338 a rare ore mineral mixed with gold and silver telluride, first discovered in Transylvania .
A small earthquake that startled residents near Richmond, Virginia, this week is a reminder that the East Coast is not exempt from the dangers of temblors. The 2.8 quake hit about 6 miles ...
A rare white orca has been filmed off the coast of Japan. The marine mammal was spotted in Shiretoko Peninsula, Hokkaido, for the first time in two years on 13 May. Sightseeing cruise staff ...
Telluric silver (German: telluriumsilber, tellursilber) — is an obsolete trivial name, which collectors and mineral traders, miners, geologists and representatives of other applied professions actually applied to several rare ore minerals, tellurides of silver, [1]: 338 as well as to chemical compounds of similar composition. [2]