Gold is also produced from three platinum mines in the Stillwater igneous complex : the Stillwater mine, the Lodestar mine, and the East Boulder Project.
22.
This igneous complex was emplaced and the volcanic activity, which was presumably associated with it, occurred during the end of the Taconic Orogeny in the late Ordovician period.
23.
These extruded rocks, containing minerals such as vanadium and platinum, are called the Bushveld igneous complex, leading to the colourful bluff faces along much of the Palala River.
24.
Between the Beemerville alkaline complex and the Cortlandt igneous complex, this magmatic belt consists of a linear, almost east-west trending, zone of lamprophyre and felsic dikes.
25.
It also occurs in the layered igneous complex of the Bushveld region of South Africa and the Oktyabr'skoye copper-nickel deposit of the Eastern-Siberian Region, Russia.
26.
In addition to the discovery locality, it has been reported from the Stillwater igneous complex in Montana and the New Rambler copper nickel mine in the Medicine Bow Mountains of Wyoming.
27.
In addition to these processes, impact events such as ones that created the Addams crater on Venus and the Sudbury Igneous Complex in Canada are known to have caused melting and volcanism.
28.
In Finland, melanite bearing nepheline rocks have been found and described as ijolite, but the only other locality for melanite-leucite-syenite is Magnet Cove igneous complex in Arkansas.
29.
This was an alluvial deposit but its importance was recognised by Hans Merensky whose prospecting work discovered the primary source in the Bushveld Igneous Complex and traced it for several hundred kilometres by 1930.
30.
It was first described in 1966 for an occurrence in the Merensky Reef of the Western Bushveld Igneous Complex, South Africa, and named for South African geologist Hans Merensky ( 1871 1952 ).
