Definition of troctolite in English:

troctolite

Syllabification: troc·to·lite
Pronunciation: /ˈträktəˌlīt
 
/

noun

Geology
Gabbro made up mainly of olivine and calcic plagioclase, often having a spotted appearance likened to a trout’s back.
More example sentences
  • There is some grain size reduction of the troctolite adjacent to the anorthosite, indicating a chilling effect.
  • Metasomatic anorthosite formed by replacement of layered gabbroic troctolite in the Skaergaard intrusion is shown here.
  • Similar advantages in melt behaviour are also achieved by using troctolite as the iron and magnesium source rather than traditional materials.

Origin

late 19th century: from German Troklotit, from Greek trōktēs, a marine fish (taken to be 'trout').

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