One of the mysteries of the English language finally explained.
A yellow to brown mineral consisting of a fluoride and carbonate of cerium and other rare earth metals.
- ‘The largest single deposit of rare earths is the bastnaesite deposit at Mountain Pass, San Bernnadino County in California.’
- ‘This is one of only five localities for bastnaesite within New Mexico.’
- ‘Bastnasite, which is sometimes spelled as bastnaesite, is one of a few rare earth carbonate minerals.’
- ‘A much larger, nonradioactive deposit of bastnaesite was found on adjoining land.’
- ‘A sample from Andakatany labeled ‘bastnaesite,’ turned out to be bastnasite- (Ce).’
Late 19th century: from Bastnäs, the name of a district in Västmanland, Sweden, + -ite.
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