Thus, the MgO content of a metamorphosed ultramafic rock can be estimated roughly by understanding the mineral assemblage of the rock.
42.
Within the region, ultramafic rocks, the original source of the cobalt and nickel, are confined to the project area.
43.
In southern British Columbia, Canada dunite rocks form the core of an ultramafic rock complex located near the small community of Tulameen.
44.
Serpentine soil is a magnesium rich, calcium, potassium and phosphorus poor soil that develops on the regolith derived from ultramafic rocks.
45.
Some of the oldest and most highly deformed ultramafic rocks which underwent laterization are found in the complex Precambrian shields in Brazil and Australia.
46.
The butterfly and its host plants thrive in areas with serpentine soil, soils derived from the serpentinite mineral, and other ultramafic rocks.
47.
All are dominated by quartzofeldspathic gneiss with a few percent mafic rock ( eclogite ) or ultramafic rock ( garnet-bearing peridotite ).
48.
In Pakistan, chromite is mined from the ultramafic rocks in mainly the Muslimbagh killa Saifullah District and Khanozai area of Pishin District of Balochistan.
49.
There is at least partial solid solution between trevorite and magnetite, with many magnetites from ultramafic rocks containing at least trace amounts of Ni.
50.
Subduction processes may have played a role in the generation of the felsic rocks, but a tectonic setting for the ultramafic rocks remains uncertain.
