Dunite
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Dunite, also known as olivinite, is an intrusive igneous rock of ultramafic composition and with phaneritic texture. The mineral assemblage is greater than 90% olivine, with minor amounts of other min
Small volcanic bomb of (black) basanite with (green) dunite.
Olivine
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The mineral olivine is a magnesium iron silicate with the chemical formula 2SiO4. It is a type of nesosilicate or orthosilicate. The primary component of the Earth's upper mantle, it is a common miner
Dunite
…olivenite), is an intrusive igneous rock of ultramafic composition and with phaneritic (coarse-grained) texture. The mineral assemblage is greater than 90% olivine, with minor amounts of other minerals such as pyroxene, chromite, magnetite, and pyrope. Dunite is the olivine-rich endmember of the peridotite group…
Olivine gem 7 10a
Olivine in cross-polarized light
Olivine grains that eroded from lava on Papakolea Beach, Hawaii
Light green olivine crystals in peridotite xenoliths in basalt from Arizona