marcasite

noun
mar·​ca·​site | \ˈmär-kə-ˌsīt, -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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Dictionary Entries near marcasite

marc

Marcan

marcando

marcasite

marcatissimo

marcato

marcel

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

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Britannica.com: Encyclopedia article about marcasite

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