Dictionary

marcasite

noun mar·ca·site \ˈmär-kə-ˌsīt, -ˌzīt; ˌmär-kə-ˈzēt\

Definition of MARCASITE

1
a :  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

Origin of MARCASITE

Middle English marchasite, from Medieval Latin marcasita
First Known Use: 15th century

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