Definitions

from The Century Dictionary.

  • noun A silicate of aluminium and magnesium, MgAl2SiO6, occurring in from colorless to white fibrous or columnar aggregates: found at Fiskernäs, Greenland. Prismatine, from Waldheim, Saxony, is a similar mineral.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy A rare boro-silicate mineral with the chemical formula (Mg,Fe2+)4(Al,Fe3+)6(SiO4,BO4)5(O,OH)2, some varieties of which are valued as gemstones.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Andreas Nikolaus Kornerup (1857–1883), Danish geologist +‎ -ite.

Examples

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