ADULARIA

Etymology

Named for the type locality at Adular, Switzerland.

Noun

adularia (plural adularias)

A variety of orthoclase feldspar found as colorless to white prismatic crystals in cavities in metamorphic rocks. Some specimens reflect a bluish sheen along crystal faces. This phenomenon is called adularescence, and adularia with this property is called moonstone. (See sanidine).

Source: Wiktionary


Ad`u*la"ri*a, n. Etym: [From Adula, a mountain peak in Switzerland, where fine specimens are found.] (Min.)

Definition: A transparent or translucent variety of common feldspar, or orthoclase, which often shows pearly opalescent reflections; -- called by lapidaries moonstone.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

5 November 2024

TEMPORIZE

(verb) draw out a discussion or process in order to gain time; “The speaker temporized in order to delay the vote”


coffee icon

Coffee Trivia

The word “coffee” entered the English language in 1582 via the Dutch “koffie,” borrowed from the Ottoman Turkish “kahve,” borrowed in turn from the Arabic “qahwah.” The Arabic word qahwah was traditionally held to refer to a type of wine.

coffee icon