Dacite

/ˈdeɪsaɪt/ noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An igneous, volcanic rock with a high iron content.
  2. 2
    a grey volcanic rock containing plagioclase and quartz and other crystalline minerals wordnet

Etymology

From German Dazit, from Latin Dācia (“greater Romania”). First used in 1863 by Austrian geologists Franz von Hauer and Guido Stache, in a description of the geology of Transylvania.

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