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dacite

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da·cite  (dst)
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.]
dacite  (dst)
A fine-grained light gray volcanic rock consisting primarily of quartz, plagioclase, and potassium feldspar, and also containing biotite, hornblende, or pyroxene. It is the fine-grained equivalent of granodiorite.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.dacite - a grey volcanic rock containing plagioclase and quartz and other crystalline minerals
oligoclase, plagioclase - any of a series of triclinic feldspars that form rocks
volcanic rock - extrusive igneous rock solidified near or on the surface of the Earth
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In addition, researchers found that the magma is made of dacite, a type of rock that's a precursor to granite, rather than the basalt that forms most of Hawaii.
Humans make first contact with magma by Asian News International
A group of rock chip samples collected across two old adits excavated within a mineralized dacite dike averaged 706 grams per tonne silver (22.
Paramount Gold Discovers a New Silver Zone at San Miguel, Sangre de ... by Business Wire
Three mineralization styles were sampled: 1) quartz veins from artisan workings, 2) argillically altered dacite with minor quartz veining, and 3) highly silicified unaltered dacite.
Plexmar Resources Inc.: Field Work Update by Business Wire
 
 
 
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