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The ideal formula of strontianite is SrCO 3, with molar mass 147.63 g, [4] but calcium (Ca) can substitute for up to 27% of the strontium (Sr) cations, and barium (Ba) up to 3.3%. [2] The mineral was named in 1791 for the locality, Strontian, Argyllshire, Scotland, where the element strontium had been discovered the previous year. [2]
Before World War I the beet sugar industry used 100,000 to 150,000 tons of strontium hydroxide for this process per year. [42] The strontium hydroxide was recycled in the process, but the demand to substitute losses during production was high enough to create a significant demand initiating mining of strontianite in the Münsterland .
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Celestine (the IMA-accepted name) [6] or celestite [1] [7] [a] is a mineral consisting of strontium sulfate (Sr S O 4). The mineral is named for its occasional delicate blue color. Celestine and the carbonate mineral strontianite are the principal sources of the element strontium, commonly used in fireworks and in various metal alloys.
About 8% by weight of cathode-ray tubes is strontium oxide, which has been the major use of strontium since 1970. [3] [4] Color televisions and other devices containing color cathode-ray tubes sold in the United States are required by law to use strontium in the faceplate to block X-ray emission (these X-ray emitting TVs are no longer in production).
Veatchite is an unusual strontium borate, with the chemical formula Sr 2 B 11 O 16 (OH) 5 ·H 2 O. There are two known polytypes, veatchite-A and veatchite-p. [5]Veatchite was discovered in 1938, at the Sterling Borax mine in Tick Canyon, Los Angeles County, California.
Archaeological materials, such as bone, organic residues, hair, or sea shells, can serve as substrates for isotopic analysis. Carbon, nitrogen and zinc isotope ratios are used to investigate the diets of past people; these isotopic systems can be used with others, such as strontium or oxygen, to answer questions about population movements and cultural interactions, such as trade.
A further place the strontian process came to be used was the Sugar Factory Rositz (in Rositz). [citation needed] Yet by 1883, the demand for strontianite had begun to shrink. First, it was replaced by another strontium mineral , that could be imported from England, in a cheaper way. Second, the prices for sugar decreased so much, that the ...