heulandite
(noun) a group of minerals of the zeolite family consisting of a hydrous aluminum silicate of sodium and calcium
Source: WordNet® 3.1
heulandite (countable and uncountable, plural heulandites)
(mineral) A common mineral of the zeolite group with monoclinic crystals, the most usual form being heulandite-Ca (Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O.
Source: Wiktionary
Heu"land*ite, n. Etym: [After Heuland, an English mineralogist.] (Min.)
Definition: A mineral of the Zeolite family, often occurring in amygdaloid, in foliated masses, and also in monoclinic crystals with pearly luster on the cleavage face. It is a hydrous silicate of alumina and lime.
Source: Webster’s Unabridged Dictionary 1913 Edition
17 May 2025
(noun) sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed
The earliest credible evidence of coffee-drinking as the modern beverage appeared in modern-day Yemen. In the middle of the 15th century in Sufi shrines where coffee seeds were first roasted and brewed for drinking. The Yemenis procured the coffee beans from the Ethiopian Highlands.
