Ref.: http://pubs.nrc-cnrc.gc.ca/mineral/tcm-49942-2.html
http://pubs.nrc-cnrc.gc.ca/mineral/tcm-51542-2.html
http://www.minsocam.org/MSA/AmMin/TOC/Abstracts/2000_Abstracts/MJ00_Abstracts/Barkov_p694_00.pdf
Barkov, A.Y., Fleet, M.E., Martin, R.F., and Halkoaho, T.A.A. (2005) New data on "Bonanza"-type PGE mineralization in the Kirakkajuppura PGE deposit, Penikat layered complex, Finland. Canadian Mineralogist: 43: 1663-1686.
Located in the Penikat ultramafic complex.