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[an-duh-zeen] /ˈæn dəˌzin/
a mineral, intermediate in the plagioclase feldspar group, having a play of colors and usually found as crystals in igneous rocks.
Origin of andesine
1860-65; named after Andes; see -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for andesine
  • Sodic andesine crystals commonly broken and with faint euhedral oscillatory zoning.
  • Most crystals are andesine, but the composition ranges from oligoclase to labradorite.
  • Most of the plagioclase is oligoclase, but sodic andesine is present in a few specimens.
British Dictionary definitions for andesine


/ˈændɪˌziːn; -zɪn/
a feldspar mineral of the plagioclase series consisting of an aluminium silicate of sodium and calcium. Formula: NaAlSi3O8.CaAl2Si2O8
Word Origin
C19: from the Andes (where it is found) + -ine1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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andesine in Science
A white, gray, green or yellow mineral of the plagioclase feldspar group. Andesine occurs in igneous rocks such as andesite and diorite. Chemical formula: (Na,Ca)(Si,Al)4O8.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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