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Webster 1913 Edition

Noun.

[See

(Min.)

A rock consisting of granular red garnet, light green smaragdite, and common hornblende; – so called in reference to its beauty.

eclogite ‎(plural eclogites)

(petrology) A coarse-grained metamorphic rock, a mixture of pyroxene, quartz, and feldspar with inclusions of red garnet.
- 2004, Richard Fortey, The Earth, Folio Society 2011, p. 101:
  Assiduoud field-workers have discovered little pods of a rock called eclogite in the rocks around San Bernardino.

coarse-grained rock

Chinese:

Cantonese: 榴輝岩, 榴辉岩 ‎(lau⁴ fai¹ ngaam⁴)

Mandarin: 榴輝岩, 榴辉岩 ‎(liúhuīyán)
Japanese: 榴輝岩 ‎(りゅうきがん, ryūkigan)