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“THE LANGESUNDSFJORD – HISTORY,
GEOLOGY, PEGMATITES, MINERALS”, by Alf Olav Larsen (ed), Svein Arne
Berge, Frode Andersen, Sven Dahlgren, Knut Edvard Larsen and Ingulv Burvald.
IN ENGLISH, 240 pages, 11 1/4” X 8 1/2”, 240 pages, pictorial hard
cover, with more than 200 color photos covering historical information,
locality photos, maps, crystal drawings, and color photos of minerals found
in this unique syenite pegmatite district in southern Norway. The history
of discoveries is brought forward, as well as the interesting geology of the
district, and the Larvikite industry. New information and excellent photos
make this book a valuable source of information for mineral collectors, both
amateurs and professionals. Over 185 minerals have been identified from
the district, and there are a total of 26 mineral species for which the
various sites in the district are type localities. The complete book
review, supplied by the publisher, appears below.
Background information: “Brøgger’s historic 1890
monograph on the minerals of the syenitic pegmatites of what we today call
the Larvik plutonic complex was a monumental work and a great achievement.
It occupies a single, large volume of Zeitschrift für Krystallographie. The
individual minerals are meticulously described in 663 pages. In addition,
Brøgger included a 235 pages long summary of the geology of the whole Oslo
Region, a Permian rift system. Brøgger (1851-1940) was 39 years of age at
the time of publication, had worked as a professor of mineralogy at
Stockholm’s Högskola since 1881, and became professor at the University of
Oslo in 1890, the same year his monograph appeared. No doubt there was a
connection between the chair he was offered in Oslo and the publication of
the monograph.
The mineralogical investigation of the syenitic
pegmatites of the famous Langesundsfjord area, in the south-eastern part of
the Larvik plutonic complex, commenced long before Brøgger’s time. Starting
with Pyrochlore in 1826, eleven new mineral species that are still valid
today were described from the area until 1877 by people like Wöhler, Esmark,
Berzelius, Erdmann, Scheerer, Weibye and Paijkull. These persons are
portrayed in the present book. Brøgger was able to describe eight new
species in his publications from 1884 to 1890. Since then, five new species
have been described from the area, and the editor of the present book has
been involved with all of them: Gadolinite-(Ce) (1978), Chiavennite (1983),
Tvedalite (1992), Grenmarite (2004) and Eirikite (approved 2007), and was
recently honored by the new species Alflarsenite (2009). This leads to a
total of 26 mineral species for which the various sites in the Larvik
plutonic complex are type localities.
In this book, A.O. Larsen describes in detail about
185 minerals from these occurrences. The information on individual
localities and mineral associations is a valuable supplement. Such a
plethora of minerals is typical of areas of syenitic pegmatites elsewhere,
and the Larvik pegmatites are in the same league as the renowned occurrences
in the Kola Peninsula (Russia), Mont Saint-Hilaire, Quebec (Canada) and
Ilímaussaq (Greenland).
The publication of this up-to-date account by A.O.
Larsen and his co-authors 120 years after Brøgger is a milestone in
Norwegian mineralogy. We must remember that it is the work of amateurs and
mineral collectors that has contributed most to the knowledge of Norwegian
mineralogy in recent years. It must be noted with embarrassment that Norway
is today a country without an academic chair in mineralogy. Typically, it
was not possible to publish the present book in Norway.
Mr Larsen is not, as you might think, a
professionally educated mineralogist. Born in 1952, his background is in
engineering and electronics. He was 1974 to 1980 employed as a technician at
the Department of Geology, University of Oslo, and has been working since
then at the Research Centre of Norsk Hydro (now StatoilHydro) in Porsgrunn.
As a self-taught mineralogist, his scientific achievements, including
involvement in the description of six new mineral species, are remarkable.
There is still a lot of research to be done in the
Larvik plutonic complex, including the mineralogy of the associated syenitic
pegmatites. The structure, petrology and geochemistry of the gneissic
syenite in the Langesundsfjord area (Brøgger’s ditroite) should be studied
by modern methods. Fluid inclusion studies, mineral chemistry, mineral
stability relations and isotope geochemistry of rocks and minerals should
prove to be fertile fields of investigation.”
Published by: Bode Verlag GmbH, Germany (in
English)
ISBN: 978-3-925094-97-2
Order Item Number: BK0357
Shipping weight: 4 pounds
Price: $70.00 |