Share this entry

Share this page

alkali feldspar

Line breaks: al¦kali feld|spar

Definition of alkali feldspar in English:

noun

Geology
Any of the group of feldspars rich in sodium and/or potassium.
Example sentences
  • Olson states that the first mineral to be deposited was a reddish alkali feldspar, followed by abundant deposition of epidote and smaller amounts of pumpellyite.
  • Of these, alkali feldspar, particularly orthoclase, is the most common.
  • The first phase of diagenetic albite constitutes an impure, turbid variety including albitized grains of original plagioclase and alkali feldspar.

Definition of alkali feldspar in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day cumbersome
Pronunciation: ˈkʌmbəs(ə)m
adjective
large or heavy and therefore difficult to carry…