Some of the most plentiful sources of this rock are in Sudbury, Ontario, where it is mined for its iron and nickel deposits; Montana, the Bushveld of South Africa, and Skye Island in the Hebrides. The San Marcos type is used in its pure form as a gauge block. It forms at divergent plate boundaries by partial melts of peridotite, and platinum, chromium, and titanium are nearly exclusively found within deposits of it. FTP, identify this plutonic igneous rock, composed mainly of plagioclase feldspar and pyroxene, a coarse-
Some of the most plentiful sources of this rock are in Sudbury, Ontario, where it is mined for its iron and nickel deposits; Montana, the Bushveld of South Africa, and Skye Island in the Hebrides. The San Marcos type is used in its pure form as a gauge block. It forms at divergent plate boundaries by partial melts of peridotite, and platinum, chromium, and titanium are nearly exclusively found within deposits of it. FTP, identify this plutonic igneous rock, composed mainly of plagioclase feldspar and pyroxene, a coarse-grained rock which is the intrusive equivalent of basalt.
Some of the most plentiful sources of this rock are in Sudbury, Ontario, where it is mined for its iron and nickel deposits; Montana, the Bushveld of South Africa, and Skye Island in the Hebrides.