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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 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.

from The Century Dictionary and Cyclopedia

  • n. 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.


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


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