(UUID : 506b131b-c7e2-475b-a611-b4820614919a)
Rock
Hornblende dacite
I-103
Rock
igneous rock
It is a dacite in which hornblende is characteristically observed. It is a volcanic rock with a high iron content, and the SiO2 content is about 63~67% (between andesite and rhyolite). It is usually a rock with a porphyritic texture, and the color is often bright, but varies depending on the eruption conditions and crystallinity. Plagioclase in dacite usually appears in a zonal structure.
9.0
cm
Plagioclase, Augite, Olivine
#igneous rock
United States
California
Mt.Shashta
Department of Geology and Geophysics, Kangwon National University
+82-33-250-8550
Igneous Petrology Laboratory
DOI
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2024-09-05