213
Geological Survey of Finland, Bulletin 395
Geology and ore petrology of the Akanvaara and Koitelainen mafic layered intrusions and the Keivitsa-Satovaara...
Hills, E. S. 1936. Reverse and oscillatory zoning in
plagioclase feldspars. Geological Magazine 73, 49–
56.
Hiltunen, A. 1982. The Precambrian geology and
skarn iron ores of the Rautuvaara, northern Finland.
Geological Survey of Finland, Bulletin 318. 133 p.
Hirvas, H. & Tynni, R. 1976. Tertiääristä savea Savu-
koskella sekä havaintoja tertiäärisistä mikrofossii-
leista. Summary: Tertiary clay deposit at Savukos-
ki, Finnish Lapland, and observations of Tertiary
microfossils, preliminary report. Geologi 28 (3),
33–40.
Hoatson, D. M., Wallace, D. A., Sun, S.-S., Macias,
L. F., Simpson, D. J. & Keays, R. R. 1992. Petrol-
ogy and platinum-group-element geochemistry of
Archaean layered mafic-ultramafic intrusions, west
Pilbara Block, Western Australia. AGSO Bulletin
242. 319 p.
Hoefs, J. 1965. Ein Beitrag zur Geochemie des Koh-
lenstoffs in magmatischen und metamorphen
Gesteinen. Geochimica et Cosmochimica Acta 29,
399–428.
Hoffer, A. 1966. Seismic control of layering in intru-
sives. Bulletin of Volcanology 29, 817–821.
Hoffman, R. D. 1931. Vlackfontein nickel deposits,
Rustenburg area, Transvaal, South Africa. Econom-
ic Geology 26, 202–214.
Holtz, F. & Johannes, W. 1991. Effect of tourmaline
on melt fraction and composition of first melts in
quartzofeldspathic gneiss. European Journal of
Mineralogy 3, 527–536.
Homma, F. 1932. Über das Ergebnis von Messungen
an zonaren Plagioklasen aus Andesiten mit Hilfe
des Universaldrehtisches. Schweizerische mineralo-
gische und petrographische Mitteilungen 12, 345–
352.
Hoover, J. D. 1989. The chilled marginal gabbro and
other contact rocks of the Skaergaard intrusion.
Journal of Petrology 30 (2), 441–476.
Hor, A. K., Hutt, D. K., Smith, J. V., Wakefield, J.
& Windley, B. F. 1975. Petrochemistry and miner-
alogy of early Precambrian anorthositic rocks of the
Limpopo belt, southern Africa. Lithos 8, 297–310.
Hotz, P. E. 1953. Petrology of granophyre in diabase
near Dillsburg, Pennsylvania. Geological Society of
America Bulletin 64, 675–704.
Hounslow, A. W. & Chao, G. Y. 1970. Monoclinic
chlorapatite from Ontario. The Canadian Mineralo-
gist 10, 252–259.
Huebner, J. S., Lipin, B. R. & Wiggins, L. B. 1976.
Partitioning of chromium between silicate crystals
and melts. Proceedings of the Lunar Science Con-
ference, 7th, vol. 2. Geochimica et Cosmochimica
Acta Supplement 7, 1195–1220.
Huhma, H., Cliff, R. A., Perttunen, V. & Sakko, M.
1990. Sm-Nd and Pb isotopic study of mafic rocks
associated with early Proterozoic continental rift-
ing: the Peräpohja schist belt in northern Finland.
Contributions to Mineralogy and Petrology 104,
369–379.
Huhma, H., Hölttä, P. & Paavola, J. 1995a. Isotopic
studies on the Archaean Varpaisjärvi granulites. In:
Glebovitsky, V. A. & Kotov, A. B. (eds.) Precam-
brian of Europe: Stratigraphy, structure, evolution
and mineralization. 9th Meeting of the Association
of European Geological Societies (MAEGS), 4–15
September 1995, St. Petersburg, Russian Federa-
tion. Abstracts. St. Petersburg: Russian Academy of
Sciences, 42–43.
Huhma, H., Mutanen, T., Hanski, E. & Walker, R.
J. 1995b. Sm-Nd, U-Pb and Re-Os isotopic study of
the Keivitsa Cu-Ni-bearing intrusion, northern Fin-
land. In: The 22nd Nordic Geological Winter Meet-
ing, Turku, Finland, January 8–11, 1996. Abstracts
and oral poster presentations, p. 72.
Huhma, H., Mutanen, T., Hanski, E., Räsänen, J.,
Manninen, T., Lehtonen, M., Rastas, P., & Juop-
peri, H. 1996. Isotopic evidence for contrasting
sources of the prolonged Palaeoproterozoic mafic-
ultramafic magmatism in Central Finnish Lapland.
In: IGCP project 336 symposium in Rovaniemi,
Finland, August 21–23, 1996: program and ab-
stracts. University of Turku. Division of geology
and mineralogy. Publication 33, p. 17.
Huhtelin, T. A., Alapieti, T. T., Lahtinen, J. J. &
Lerssi, J. 1989. Megacyclic units I, II and III in the
Penikat layered intrusion. In: Alapieti, T. T. (ed.):
Guide to the post-symposium field trip August 4–
11, 1985. 5th International Platinum Symposium.
Geological Survey of Finland, Guide 29, 59–69.
Hulbert, L. J., Grégoire, D. C., Paktunc, D. &
Carne, R. C. 1992. Sedimentary nickel, zinc, and
platinum-group-element mineralization in Devonian
black shales at the Nick Property, Yukon, Canada: a
new deposit type. Exploration and mining geology 1
(1), 39–62.
Hyppönen, V. 1983. Ontojoen, Hiisijärven ja Kuhmon
kartta-alueiden kallioperä. Summary: Pre-Quater-
nary rocks of the Ontojoki, Hiisijärvi, and Kuhmo
map-sheet areas. Geological Map of Finland 1 : 100
000. Explanation to the maps of pre-Quaternary
rocks, Sheets 4411, 4412 and 4413. Geological Sur-
vey of Finland. 60 p.
Iljina, M. 1994. The Portimo Layered Igneous Com-
plex: with emphasis on diverse sulphide and plati-
num-group element deposits. Acta Universitatis
Ouluensis Series A, Scientiae Rerum Naturalium
258. 158 p.
Ireland, K. L. 1986. The Winterveld (TCL) Chrome
Mine Limited, Eastern Bushveld Complex. In: An-
haeusser, C. R. & Maske, S. (eds.) Mineral deposits
of Southern Africa, vol. II. Johannesburg: Geologi-