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English definition of “marcasite”

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marcasite

noun [U] uk   /ˈmɑː.kə.saɪt/ us    /ˈmɑːr-/
a mineral that can be cut and made to look like precious stones and is used to make jewellery
(Definition of marcasite from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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