mar·​ca·​site | \ ˈmär-kə-ˌsīt How to pronounce marcasite (audio) , -ˌzīt; ˌmär-kə-ˈzēt \

Definition of marcasite

1a : crystallized pyrite
b : a pale yellow to white mineral of the same composition and appearance as pyrite but of different crystalline organization and lower specific gravity
2 : a piece of marcasite used in jewelry

First Known Use of marcasite

15th century, in the meaning defined at sense 1a

History and Etymology for marcasite

Middle English marchasite, from Medieval Latin marcasita

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The first known use of marcasite was in the 15th century

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Cite this Entry

“Marcasite.” Dictionary, Merriam-Webster, Accessed 23 Sep. 2020.

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