Definition of Iceland spar in English:

Iceland spar

Line breaks: Ice|land spar
Pronunciation: /ˈʌɪslənd
 
/

noun

[mass noun]
A transparent variety of calcite, showing strong double refraction.
More example sentences
  • Nodules filled with clear double-refractive Iceland spar with celadonite inclusions have also been found here.
  • The large, transparent crystals known as Iceland spar, however, are pure calcite.
  • Certain crystals will split incoming light into two separate rays; Iceland spar is one such crystal, as are calcite and quartz.

Definition of Iceland spar in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day bimble
Pronunciation: ˈbɪmb(ə)l
verb
walk or travel at a leisurely pace