(UUID : 5d130faf-58bd-46c9-9984-d5fc077bf55d)
Rock
Basalt
I-025
Rock
igneous rock
It is a dark, mafic volcanic rock with a low SiO2 content of 45–52%. It is a fine-grained igneous rock mainly composed of plagioclase and common pyroxene, and has the same chemical composition as gabbro. It is mostly grayish black to black, fine-grained, and appears dense, but may be porous.
15.0
cm
Quartz, Plagioclase, Orthoclase, Biotite
#igneous rock
United States
New Hampshire
Concord
Department of Geology and Geophysics, Kangwon National University
+82-33-250-8550
Geology and Exhibition Hall
DOI
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2024-09-05