chalcedony
English
Etymology
Borrowed from Latin chalcēdōnius, probably derived from the name of the town Chalcedon in Asia Minor.
Pronunciation
Noun
chalcedony (countable and uncountable, plural chalcedonies)
- A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally.
- 2012 March, Lee A. Groat, “Gemstones”, in American Scientist[1], volume 100, number 2, page 128:
- Although there are dozens of different types of gems, among the best known and most important are […] . (Common gem materials not addressed in this article include amber, amethyst, chalcedony, garnet, lazurite, malachite, opals, peridot, rhodonite, spinel, tourmaline, turquoise and zircon.)
Translations
form of fine-grained quartz
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See also
- (noun: types of minerals) agate, chert, flint, moganite
- (adjective) conchoidal
- (adverb) conchoidally
- (noun) break, fracture, flake, shatter
- (verb) knapp, break, fracture, flake, shatter
Further reading
- David Barthelmy (1997–2024) “Chalcedony”, in Webmineral Mineralogy Database.
- “chalcedony”, in Mindat.org[2], Hudson Institute of Mineralogy, 2000–2024.