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

Word History and Origins

Origin of andradite¹

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

Word History and Origins

Origin of andradite¹

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

Example Sentences

To andradite may be referred melanite, a black garnet well known from the volcanic tuffs near Rome, used occasionally in the 18th century for mourning jewelry.

From Project Gutenberg