Blue Olivine in an unusual basalt
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Blue Olivine in an unusual basalt

by Bernardo Cesare, Department of Geosciences, University of Padova, Padova, Italy

Blue Olivine set in a matrix of pyroxene, magnetite and plagioclase in a basalt I collected on the shore of the Sea of Galilee, Israel.
Who may have been throwing this stone a couple millennia ago?
Polarized light photomicrograph.
Crossed polarizers and red tint plate. Width c. 2.7 mm