greenstone








noun

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

noun

  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

  1. 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.
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