[ hyoo-luhn-dahyt ]
/ ˈhyu lənˌdaɪt /
a white or transparent, colorless mineral of the zeolite family, hydrous calcium aluminum silicate, CaAl2Si7O18⋅6H2O, occurring in basic volcanic rocks in the form of crystals with a pearly luster.
TAKE THIS QUIZ IF A DAZZLING VOCABULARY IS YOUR DESIDERATUM!
Have the Words of the Day from October 19–25, 2020, made an indelible mark on your memory? Take the quiz to find out!
Question 1 of 7
What does “clement” mean?
Origin of heulandite
1815–25; named after Henry Heuland, 19th-century English mineral collector; see -ite1
Words nearby heulandite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for heulandite
Isomorphous with heulandite is the strontium and barium zeolite brewsterite, named after Sir David Brewster.
Heulandite is distinguished from stilbite by its crystals and perfect solubility; from apopholite by form of crystals.
British Dictionary definitions for heulandite
/ (ˈhjuːlənˌdaɪt) /
a white, grey, red, or brown zeolite mineral that consists essentially of hydrated calcium aluminium silicate in the form of elongated tabular crystals. Formula: CaAl 2 Si 7 O 18 .6H 2 O
Word Origin for heulandite
C19: named after H. Heuland, 19th-century English mineral collector; see -ite 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012