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GEOREF RECORD
Fenites associated with carbonatites
Michael J. Le Bas
Fenites associated with carbonatites (in The mineralogy and petrology of carbonatites; a tribute to John Gittins, Roger H. Mitchell (prefacer), Anton R. Chakhmouradian (prefacer) and David R. Lentz (prefacer))
The Canadian Mineralogist (August 2008) 46 (4): 915-932
Fenites associated with carbonatites (in The mineralogy and petrology of carbonatites; a tribute to John Gittins, Roger H. Mitchell (prefacer), Anton R. Chakhmouradian (prefacer) and David R. Lentz (prefacer))
The Canadian Mineralogist (August 2008) 46 (4): 915-932
Index Terms/Descriptors
Abstract
A review of occurrences of potassic and sodic fenitization around carbonatites is presented, including several new examples and oceanic ones. Taken in conjunction with the many examples quoted in the literature, conclusions are drawn that the K and Na contents of carbonatitic melts that induce fenitization are primary constituent parts of both calciocarbonatitic and magnesio-carbonatitic melts, which have a source in the mantle, and that the K and Na are not derived from the crust during passage by these melts. Potassic fenitization can lead to the production of pseudotrachytes with up to 16 wt% K (sub 2) O; these are genetically unrelated to common magmatic trachytes, which have only 5-10 wt% K (sub 2) O.
ISSN: 0008-4476
EISSN: 1499-1276
Coden: CAMIA6
Serial Title: The Canadian Mineralogist
Serial Volume: 46
Serial Issue: 4
Title: Fenites associated with carbonatites
Title: The mineralogy and petrology of carbonatites; a tribute to John Gittins
Author(s): Le Bas, Michael J.
Author(s): Mitchell, Roger H.prefacer
Author(s): Chakhmouradian, Anton R.prefacer
Author(s): Lentz, David R.prefacer
Affiliation: 9 Park Lands, Blandford Forum,
Dorset,
United Kingdom
Affiliation: Lakehead University,
Thunder Bay, ON,
Canada
Pages: 915-932
Published: 200808
Text Language: English
Publisher: Mineralogical Association of Canada,
Ottawa, ON,
Canada
References: 84
Accession Number: 2009-013084
Categories: Igneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 15 tables
Secondary Affiliation: University of Manitoba,
CAN,
CanadaUniversity of New Brunswick,
CAN,
Canada
Country of Publication: Canada
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Mineralogical Association of Canada. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200908
