adularia
[ aj-uh-lair-ee-uh ]
nounMineralogy.
a sometimes opalescent variety of orthoclase formed at a low temperature.
Origin of adularia
1Words Nearby adularia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
British Dictionary definitions for adularia
adularia
/ (ˌædjʊˈlɛərɪə) /
noun
a white or colourless glassy variety of orthoclase in the form of prismatic crystals. It occurs in metamorphic rocks and is a minor gemstone. Formula: KAlSi 3 O 8
Origin of adularia
1C18: via Italian from French adulaire, after Adula, a group of mountains in Switzerland
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
Browse