(UUID : d043d85f-9ea8-44fa-8e4e-07ee27b31024)
Rock
Obsidian
I-092
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.
9.0
cm
Nepheline, 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