green stone

greenstone

[green-stohn]
noun
any of various altered basaltic rocks having a dark-green color caused by the presence of chlorite, epidote, etc.

Origin:
1765–75; green + stone

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To green stone
Collins
World English Dictionary
greenstone (ˈɡriːnˌstəʊn)
 
n
1.  any basic igneous rock that is dark green because of the presence of chlorite, actinolite, or epidote
2.  a variety of jade used in New Zealand for ornaments and tools

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
greenstone   (grēn'stōn')  Pronunciation Key 
Any of various green metamorphic rocks formed from igneous rocks that have a relatively low silica content and owe their color to the presence of a green mineral such as chlorite, hornblende, or epidote.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature