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THE INDUSTRIAL MINERAL DATABASE
Deposit Area 128 - 369
(Last updated 27.apr.2007)

Name of Deposit Area : Grinestad
(Object Id : 0128,369,00,00)

Location
County : Østfold (01) Municipality : Rakkestad (0128)
Map 1:50000: Sarpsborg (1913-1) Map 1:250000: Oslo
Marking point: Longitude: 11.3875470 Latitude: 59.4095860
EU89-UTM Zone 32 (Coordinates NOT confirmed)
X-coord: 635518 m. Y-coord: 6588092 m.

Commodity
Main Type: Feldspar Sub Type: Pegmatitic feldspar

Importance
Public: Not Assessed (reg. 18.02.2015)
Economical: Not classified/evaluated

Mineralization
Era: Period:
Dating: Method:
Genesis: Form:
Main texture: Min. distribution:
Main grain size:
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Period:
Province:
Geotec.unit:
Tectonic complex:
Igneous complex:
Group: Formation:

Information(s) in free text format
Free text
Forekomsten skal ligge like ved nedlagte Grinestad gård i bakken ned mot Rakkestad elva, Bruddet er lite 3x4 meter og dybde ca. 4 meter. Det sees store fletspat krystaller. Bruddet var i drift i 1880 årene.

Bibliography:
From NGU's Reference Archive:
Broch, Olaf Anton , 1934
Feltspat IV. Forekomster i Akershus og Østfold øst for Glomma.
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.141;1-119 pages
Abstract:
In this publication, which is a sequel to Feltspat II and III by Olaf Andersen and Tom F.W. Barth, brief and exoteric descriptions and some information on production and history are given of about 180 individual feldspar, quartz, and mica deposits, all of them situated east of the river Glomma in south-eastern Norway. Particulars of purely geological or mineralogical interest are few; most of them are given as footnotes or in the preface, but the minerals of each deposit, exceot quartz, feldspar and mica, are listed. The deposits are cross cutting pegmatite dikes, with a northeastern strike and a steep dip. The dikes exhibit a marked zoning; moreover, they are remarkably free from rare minerals, the occurrences of which seems to be restricted almost entirely to the dikes near the Idefjord (Bohus) granite.


The fact sheet was created on 19.05.2024

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