(UUID : 3cdd4096-e4bb-4642-9519-16f1b9da0dfd)
Rock
Obsidian
I-104
Rock
igneous rock
It is a vitreous volcanic rock rich in silicic acid. Lava is rapidly degrading on the surface. As a rule, it has a dense, vitreous sheen, black, gray, reddish, brown color. It is easily broken by shell shapes.
9.3
cm
Ca-Plagioclase, Augite
#igneous rock
United States
Utah
Millard County
Department of Geology and Geophysics, Kangwon National University
+82-33-250-8550
Igneous Petrology Laboratory
DOI
CC BY-NC - The author is free to use, but not for profit.
The copyright of this data is held by KIGAM.
2024-09-05