Geology
The Stillwater Project is underlain by the Stillwater Complex – an Archean, layered, mafic to ultramafic, magmatic intrusive body exposed over a 47 by 8 km area, which contains significant layered deposits of nickel-copper-cobalt, chromium and PGE. The Stillwater project covers major strategic sections of parts of the Basal Series and the Ultramafic Series.
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The Stillwater Complex has many similarities to the Bushveld Complex in South Africa, which accounts for most of the world’s PGE and significant amounts of chromium.
Both complexes have nickel-copper-cobalt deposits in the Lower or Basal zones, chromite seams within Ultramafic units and PGE-bearing reefs in lower sections of the Mafic Layered unit.
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