andesine

From Andes +‎ -ine, after its type locality in the Andes of Colombia.

andesine (uncountable)

1. (mineralogy) Sodium calcium aluminum silicate, (${\displaystyle Na_{x}Ca_{x}AlSi_{3}O_{8}}$ ), a plagioclase feldspar, the third member of the albite-anorthite solid solution series. Found in fine-grained andesite lavas; crystals are rarely seen.

• “Andesine” in David Barthelmy, Webmineral Mineralogy Database, 1997–.
• “andesine”, in Mindat.org‎, Hudson Institute of Mineralogy, accessed 29 August 2016.

• adenines