noun Geology a volcanic rock resembling andesite but containing free quartz.
dacitic adjective
C18: from the name of the ancient Roman province of Dacia in SE Europe (as the rock was first found in the Carpathian Mountains) + -ite1.

English new terms dictionary. 2014.

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  • Dacite — Aphanitic QAPF diagram denoting daci …   Wikipedia

  • dacite — ● dacite nom féminin (de Dacie, nom propre) Roche volcanique, voisine des andésites, mais plus siliceuse. (Les laves dacitiques sont visqueuses et forment des extrusions, par exemple l aiguille de la montagne Pelée.) dacite [dasit] n. f. ÉTYM.… …   Encyclopédie Universelle

  • dacite — ALASKA VOLCANO OBSERVATORY GLOSSARY Volcanic rock (or lava) that characteristically is light in color and contains 62% to 69% silica and moderate a mounts of sodium and potassium. GLOSSARY OF VOLCANIC TERMS A generally light colored, relatively… …   Glossary of volcanic terms

  • Dacite — Le dôme du volcan Saint Helens est constitué de dacite. La dacite est une roche magmatique volcanique microlithique composée de quartz, de plagioclase, de verre et de minéraux ferromagnésiens : biotite, hornblende ou pyroxène. Le nom …   Wikipédia en Français

  • dacite — da·cite (dāʹsīt ) n. A light gray volcanic rock containing a mixture of plagioclase and other crystalline minerals in glassy silica, similar in appearance to rhyolite.   [After Dacia.] * * * ▪ mineral       volcanic rock that may be considered a… …   Universalium

  • dacite — noun An igneous, volcanic rock with a high iron content …   Wiktionary

  • dacite — da·cì·te s.f. TS petr. roccia vulcanica cristallina formata da plagioclasio e quarzo, con biotite, orneblenda e pirosseno {{line}} {{/line}} DATA: 1955. ETIMO: der. di Dacia, v. anche dacico, con 2 ite …   Dizionario italiano

  • dacite — pl.f. daciti …   Dizionario dei sinonimi e contrari

  • dacite — da·cite …   English syllables

  • dacite — noun a grey volcanic rock containing plagioclase and quartz and other crystalline minerals • Derivationally related forms: ↑dacitic • Hypernyms: ↑volcanic rock • Substance Meronyms: ↑plagioclase, ↑oligoclase …   Useful english dictionary

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