dacite

[ dāsīt′ ]

A fine-grained light gray volcanic rock consisting primarily of quartz, plagioclase feldspar, and potassium feldspar, and also containing biotite, hornblende, or pyroxene. It is the fine-grained equivalent of granodiorite.

Nearby words

  1. dacha,
  2. dachau,
  3. dachshund,
  4. daché,
  5. dacia,
  6. dack,
  7. dacker,
  8. dacko,
  9. dacko, david,
  10. dacks

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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