different between anorthosite vs anorthite

English

Noun

anorthosite (countable and uncountable, plural anorthosites)

1. (petrology) A phaneritic, intrusive igneous rock characterized by a predominance of plagioclase feldspar.
   • 1863, T. Sterry Hunt, "On the Chemical and Mineralogical Relations of Metamorphic Rocks", The American Journal of Science and Arts, Volume XXXVI, November, 1863, page 224:

     The second, or Labrador series is characterized, as already remarked, by the predominance of great beds of anorthosite, composed chiefly of triclinic feldspars […]

Translations

English

Etymology

From Ancient Greek "less than straight, not perpendicular" - a reference to the odd angles at which crystals grow.

Noun

anorthite (plural anorthites)

1. (mineralogy) A variety of plagioclase feldspar, the calcium endmember of that series.

Derived terms

• anorthitic

Translations

Further reading

• David Barthelmy (1997–2021) , “Anorthite”, in Webmineral Mineralogy Database
• “anorthite”, in Mindat.org?^[1], Hudson Institute of Mineralogy, 2000–2021.