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GEOREF RECORD

The economic geology and development of igneous phosphate deposits in Europe and the USSR

A. J. G. Notholt
The economic geology and development of igneous phosphate deposits in Europe and the USSR (in An issue devoted to phosphate, potash, and sulfur, P. F. Howard (editor), J. C. Dunlap (editor), R. J. Hite (editor) and A. J. Bodenlos (editor))
Economic Geology and the Bulletin of the Society of Economic Geologists (April 1979) 74 (2): 339-350

Abstract

Phosphate deposits of igneous origin contributed some 19 million metric tons to the total world marketable output of phosphate rock of nearly 116 million metric tons in 1977. Most of this was produced in the USSR from the Khibiny Complex, Kola Peninsula. There was production at the neighboring Kovdor Complex and, in northern Europe, at Graengesberg in central Sweden. In Europe and the USSR, four other igneous complexes are known to be at various stages of development as commercial sources of phosphate.Most of the igneous complexes reviewed are characterized by assemblages of alkali-rich intermediate and ultrabasic rocks and carbonatite, the intrusions being generally of Siluro-Devonian or Carbo-Permian age, with the notable exception of the Precambrian Siilinjaervi carbonatite in central Finland. The complexes are also invariably located close to or within regional linear fracture zones.Associated with the igneous complexes in Europe and the USSR is an interesting variety of apatite-bearing rocks. In addition to the remarkable nepheline-apatite orebodies of the Khibiny Complex, there are other deposits, including apatite-forsterite and apatite-forsterite-magnetite rocks, as well as apatite-bearing carbonatites and, particularly, their weathering derivatives, which have their commercially important counterparts in other parts of the world. The phosphate mineral is invariably fluorapatite, with francolite occurring prominently in weathered zones. Other minerals of value or potential economic importance include magnetite, vermiculite, baddeleyite, bastnaesite, pyrochlore, chalcopyrite, fluorite, and barite.


ISSN: 0361-0128
EISSN: 1554-0774
Coden: ECGLAL
Serial Title: Economic Geology and the Bulletin of the Society of Economic Geologists
Serial Volume: 74
Serial Issue: 2
Title: The economic geology and development of igneous phosphate deposits in Europe and the USSR
Title: An issue devoted to phosphate, potash, and sulfur
Author(s): Notholt, A. J. G.
Author(s): Howard, P. F.editor
Author(s): Dunlap, J. C.editor
Author(s): Hite, R. J.editor
Author(s): Bodenlos, A. J.editor
Pages: 339-350
Published: 197904
Text Language: English
Publisher: Economic Geology Publishing Company, Lancaster, PA, United States
Meeting name: Symposia on phosphate, potash, and sulfur; AIME annual meeting
Meeting location: Denver, Colo., USA, United States
Meeting date: 19780226Feb. 26-March 2, 1978
References: 42
Accession Number: 1979-030193
Categories: Economic geology of nonmetal deposits
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. tables, geol. sketch maps
N54°30'00" - N71°00'00", E05°00'00" - E32°00'00"
N67°00'00" - N68°00'00", E33°00'00" - E34°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Society of Economic Geologists
Update Code: 1979
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