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Occurrence and genetic implications of hyalophane in manganese-rich iron-formation, Cuyuna Iron Range, Minnesota, USA

Published online by Cambridge University Press:  05 July 2018

Peter L. McSwiggen ,
G. B. Morey  and
Jane M. Cleland
Peter L. McSwiggen
Affiliation:
Minnesota Geological Survey, 2642 University Avenue, St. Paul, Minnesota 55114, USA
G. B. Morey
Affiliation:
Minnesota Geological Survey, 2642 University Avenue, St. Paul, Minnesota 55114, USA
Jane M. Cleland
Affiliation:
Minnesota Geological Survey, 2642 University Avenue, St. Paul, Minnesota 55114, USA
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Abstract

The recent discovery of hyalophane [(K,Ba)Al1−2Si3−2O8] on the North range segment of the Early Proterozoic Cuyuna Iron Range of east-central Minnesota has shed new light on the depositional environment of these rocks. This Ba-feldspar occurs in a 10 m thick interval within the main iron-formation and typically contains between 8 and 26 mol.% celsian (BaAl2Si2O8). Its occurrence in several textural settings suggests that barium was being deposited at various stages in the paragenetic history of the iron-formation. Some of the hyalophane grains occur as the cores of micronodules, which are structurally similar to oolites or oncolites, but mineralogically are very complex. The hyalophane also occurs as rims on core grains of diverse mineral composition and as discrete phases in late crosscutting veins.

Hyalophane, like other Ba-silicates, has a very restricted paragenesis. They are associated typically either with sedimentary manganese and ferromanganese deposits, or with Cu-Pb-Zn-Ba deposits. The presence of hyalophane in the Early Proterozoic manganiferous iron ores of east-central Minnesota casts doubt on the historic interpretation of these deposits as typical Superior-type sedimentary iron-formations and instead supports the view that these deposits, at least in part, consist of chemical sediments from a hydrothermal fumarolic system. The suggested involvement of a hydrothermal system is also supported by the occurrence of aegirine within the hyalophane-rich layer, and the occurrence of tourmalinites and Sr-rich baryte veins elsewhere in the Cuyuna North range.

Keywords

hyalophaneBa-feldspariron-formationmanganese depositshydrothermal activityCuyuna Iron RangeMinnesota
Type
Petrology
Information
Mineralogical Magazine , Volume 58 , Issue 392 , September 1994 , pp. 387 - 399
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1994

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References

Bjorlykke, K. O., and Griffin, W. L. (1973) Barium feldspar in Ordovician sediments, Oslo region, Norway. J. Sediment. Petrol, 43, 461–5.Google Scholar
Bostrom, K., Rydell, H. and Joensuu, O. (1979) Langban — an exhalative sedimentary deposit? Econ. Geol., 74, 1002-11.Google Scholar
Chabu, M. and Boulegue, J. (1992) Barian feldspar and muscovite from the Kipushi Zn-Pb-Cu deposit, Shaba, Zaire. Can. Mineral. 30, 1143-52.Google Scholar
Cleland, J. M., Morey, G. B. and McSwiggen, P. L. (1992). Occurrence of tourmaline-rich rocks in the Trommald and Mahnomen Formations of the Cuyuna range, east-central Minnesota (abstr.). Geol. Soc. Amer. Abstr. Prog., Annual Meeting, Cincinnati, A62.Google Scholar
Coats, J. S., Fortey, N. J., Gallagher, M. J. and Grout A. (1984) Stratiform barium enrichment in the Dalradian of Scotland. Econ. Geol., 79, 1585–95.Google Scholar
Coats, J. S., Smith, C. G., Fortey, N. J., Gallagher, M. J., May, F. and McCourt, W. J. (1980) Strata-bound barium-zinc mineralization in Dalradian schist near Aberfeldy, Scotland. Trans. Inst. Mining Metall. (Sect. B: Appl. Earth Set), 89, 110–22.Google Scholar
Deer, W. A., Howie, R. A. and Zussman, J. (1975) An introduction to the rock forming minerals. Longman, London, 528 pp.Google Scholar
Ethier, V. G. and Campbell, F. A. (1977) Tourmaline concentrations in Proterozoic sediments of the southern Cordillera of Canada and their economic significance. Can. J. Earth Sci., 14, 2348–63.Google Scholar
Fortey, N. J. and Beddoe-Stephens, B. (1982) Barium silicates in stratabound Ba-Zn mineralization in the Scottish Dalradian. Mineral. Mag., 46, 63–72.Google Scholar
Fortey, N. J., Coats, J. S., Gallagher, M. J., Smith, C. G. and Greenwood, P. G. (1993) New strata-bound barite and base metals in Middle Dalradian rocks near Braemar, northeast Scotland. Trans. Inst. Mining Metall. (Sect. B: Appl. Earth Sci.), 102, 55–64.Google Scholar
Gay, P., and Roy, N. N. (1968) The mineralogy of the potassium-barium feldspar series III: Subsoli-dus relationships. Mineral. Mag., 36, 914–32.Google Scholar
Goldsmith, J. R. and Graf, D. L. (1957) The system CaO-MnO-CO2: Solution and decomposition relations. Geochim. Cosmochim. Ada, 11, 310–34.Google Scholar
Gross, G. A. (1973) The depositional environment of principal types of Precambrian iron-formation. In Genesis of Precambrian iron and manganese deposits. UNESCO, Earth Science Series, 9, 15–21.Google Scholar
Grout, F. F. (1946) Acmite occurrences on the Cuyuna range, Minnesota. Amer. Mineral. 31, 125–30.Google Scholar
Grout, F. F. and Wolff, J. F. (1955) The geology of the Cuyuna district, Minnesota: A progress report. Minn. Geol. Surv. Bull., 36, 144 pp.Google Scholar
Jakobsen, U. H. (1990) A hydrated barium silicate in unmetamorphosed sedimentary rocks of central North Greenland. Mineral. Mag., 54, 81–9.Google Scholar
Kato, A., Matsubara, S. and Watanabe, T. (1987) Banalsite and serandite from the Shiromaru mine, Tokyo. Bull. Natn. Sci. Mus., Tokyo, Ser. C, 13, 107–14.Google Scholar
Large, D. E. (1980) Geological parameters associated with sediment-hosted submarine exhalative Pb-Zn deposits: An empirical model for mineral explora-tion. Geol, Jb., 40, 59–129.Google Scholar
Lundstrom, I. and Wadsten, T. (1979) Barium feldspar from Lillsjon, southern Sweden. Geolo-giska Foreningens i Stockholm Forhandlingar, 101, 229–32.Google Scholar
Marsden, R. W. (1972) Cuyuna district. In Geology of Minnesota: A centennial volume (P. K. Sims and G. B. Morey, eds.). Minn. Geol. Sur., 227-39.Google Scholar
Matsubara, S. (1985) The mineralogical implication of barium and strontium silicates. Bull. Natn. Sci. Mus., Tokyo, Ser. C, 11, 37–95.Google Scholar
McSwiggen, P. L., Morey, G. B. and Cleland, J. M. (1992) Occurrence of Ba-feldspar, acmite/aegirine, and Sr-rich barite in the Trommald iron-formation of the Cuyuna fron Range, east-central Minnesota: Implications of an hydrothermal origin (abstr.). Geol. Soc. Amer. Abstr. Prog., Annual Meeting, Cincinnati, A62.Google Scholar
McSwiggen, P. L., Morey, G. B. and Cleland, J. M. The origin of aegirine in iron formation of the Cuyuna range, east-central Minnesota. Can. Mineral., (in press). Morey, G. B. (1983a) Animikie basin, Lake Superior region, U.S.A., In Iron-formation facts and problems (A. F. Trendall and R. C. Morris, eds.). Elsevier, Amsterdam, 13—67.Google Scholar
Morey, G. B. (19836) Lower Proterozoic stratified rocks and the Penokean orogeny in east-central Minnesota. In Early Proterozoic Geology of the Great Lakes Region (L. G. Medaris, Jr., ed.). Geol. Soc. Amer. Mem., 160, 97–112.Google Scholar
Morey, G. B. and Southwick, D. L. (1993) Strati-graphic and sedimentological factors controlling the distribution of epigenetic manganese deposits in iron-formation of the Emily District, Cuyuna Iron Range, east-central Minnesota. Econ. Geol., 88, 104–22.Google Scholar
Morey, G. B. and Van Schmus, W.R. (1988) Correlation of Precambrian rocks of the Lake Superior region, United States. U.S. Geol. Surv. Prof. Paper, 1241-F, 31 pp.Google Scholar
Nakano, S. (1979) Intergrowth of barium microcline, hyalophane and albite in the barium-containing alkali feldspar from the Noda-Tamagawa mine, Iwate Prefecture, Japan. Mineral. J., 9, 409–16.Google Scholar
Page, D. C. and Watson, M. D. (1976) The Pb-Zn deposit of the Rosh Pinah Mine, South West Africa. Econ. Geol., 71, 306–27.Google Scholar
Pan, Y. and Fleet, M. E. (1991) Barian feldspar and barian-chromian muscovite from the Hemlo area, Ontario. Can. Mineral., 29, 481–98.Google Scholar
Pouchou, J. L. and Pichoir, F. (1984) A new model for quantitative X-ray microanalysis, Part I: Application to the analyses of homogeneous samples. Rech. Aerosp., 3, 13–38.Google Scholar
Reinecke, T. (1982) Cymrite and celsian in manga-nese-rich metamorphic rocks from Andros Island/ Greece. Contrib. Mineral. Petrol, 79, 333–6.Google Scholar
Runnells, D. D. (1964) Cymrite in a copper deposit, Brooks Range, Alaska. Amer. Mineral., 49, 158–65.Google Scholar
Russell, M. J., Hall, A. J., Willan, R. C. R., Allison, I., Anderton, R. and Bowes, G. (1984) On the origin of the Aberfeldy celsian + baryte + base-metal deposits, Scotland. In Symposium on prospecting in areas of glaciated terrain, Glasgow, Scotland (M. J. Gallagher, ed.), 158-70.Google Scholar
Schmidt, R. G. (1963) Geology and ore deposits of the Cuyuna North range. U.S. Geol. Surv. Prof. Paper, 407, 96 pp.Google Scholar
Segnit, E. R. (1946) Barium-feldspar from Broken Hill, New South Wales. Mineral. Mag., 27, 166–74.Google Scholar
Smith, W. C, Bannister, F. A. and Hey, M. H. (1949) Cymrite, a new barium mineral from the Benallt manganese mine, Rhiw, Carnarvonshire. Mineral. Mag., 28, 676–81.Google Scholar
Southwick, D. L. and Morey, G. B. (1991) Tectonic imbrication and foredeep development in the Penokean orogen, east-central Minnesota — An interpretation based on regional geophysics and the results of test-drilling. U.S. Geol. Sur. Bull., 1904-C, C1-C17.Google Scholar
Southwick, D. L., Morey, G. B. and McSwiggen, P. L. (1988) Geologic map (scale 1:250,000) of the Penokean orogen, central and eastern Minnesota, and accompanying text. Minn. Geol. Surv. Rept. Inv., 37, 25 pp.Google Scholar
Spencer, L. J. (1942) Barium-feldspars (celsian and paracelsian) from Wales. Mineral. Mag., 26, 231–45.Google Scholar
Viswanathan, K. and Kielhorn, H. M. (1983) Variations in the chemical compositions and lattice dimensions of (Ba,K,Na)-feldspars from Otjosondu, Namibia and their significance. Amer. Mineral, 68, 112–21.Google Scholar