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andradite

[ an-druh-dahyt ]

noun

  1. a mineral, calcium-iron garnet, Ca 3 Fe 2 Si 3 O 2 , occurring in brown, green, or black crystals.


andradite

/ ˈændrəˌdaɪt /

noun

  1. a yellow, green, or brownish-black garnet that consists of calcium iron silicate and is used as a gemstone. Formula: Ca 3 Fe 2 (SiO 4 ) 3


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Word History and Origins

Origin of andradite1

1830–40; named after J. B. de Andrada e Silva; -ite 1

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Word History and Origins

Origin of andradite1

C19: named after J. B. d' Andrada e Silva (1763–1838), Brazilian mineralogist; see -ite 1

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Example Sentences

The andradite garnets furnish the brilliant, nearly emerald green demantoids (so often called "olivine" by the trade).

Andradite garnet furnishes brilliant green stones, which have been incorrectly named "Olivines" by the trade.

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Andrada e Silvaandragogy