Olivine in Hawaiian basalt
By Hawaiian Volcano Observatory
2021 (approx.)
Detailed Description
(L) Green olivine crystals in lava from Mauna Loa’s 1868 eruption. (R) Microscope image of a single olivine crystal extracted from tephra at Kīlauea. This crystal is about 1 mm (less than 1/16 of an inch) tall.
Sources/Usage
Public Domain.