They found relatively large grains and many small crystals of a mineral
called olivine.
The measured ( equation omitted ) value of 4.21 for the
fe-mn olivine
( fig.
Olivine dolerite
sill at king's cross point.
The
alkali olivine
dolerite sill at king's cross point.
The most common ferromagnesian minerals
include olivine, pyroxene, amphibole and mica.
Olivine basalts, the predominant type.
Much of the dolerite found in these places has a greenish tinge because of the presence of the
mineral olivine.
The green sand beach in the south of the island of hawaii ( big island )
contains just this green, well-rounded olivine.
Olivine crystals, indicating volume increase.
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