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THE INDUSTRIAL MINERAL DATABASE
Deposit Area 128 - 387
(Last updated 22.aug.2024)

Name of Deposit Area : Øvre Erte
(Object Id : 0128,387,00,00)

Location
County : Østfold (01) Municipality : Rakkestad (0128)
Map 1:50000: Sarpsborg (1913-1) Map 1:250000: Oslo
Marking point: Longitude: 11.3881220 Latitude: 59.3360490
EU89-UTM Zone 32 (Coordinates NOT confirmed)
X-coord: 635844 m. Y-coord: 6579907 m.

Commodity
Main Type: Mica minerals Sub Type: Pegmatitic muscovite

Production
Activity: Test mining Reserves:
Prod. method: Open pit mining Production:
Prod. status: Disused, closed Volume of dump:

Importance
Public: (No data)
Economical: Minor interest , (Confirmed 22.aug.2024 by Agnes Raaness)

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
I følge Broch (1934) ligger Øvre Erte 7-800 m nord for gården Øvre Erte "og 2-300 m nordnordøst for Rolfseide 3 i utmarken i vestsiden av et litet åsdrag." Gruben oplyses å ha været en betydelig glimmergrube med gulhvit feltspat. Den har vært i drift i flere korte perioder mellom 1891 og 1901. Øvre Erte 2 skal ligge ytterligere mot øst. Broch (1934) skriver at den er en "en vannfylt synk, omtrent 40x5 m. " og videre "Ganske store, nu tilgrodde halder vidner om betydelig drift i eldre tid." Det ble tatt ut feltspat og glimmer og var i drift i ulike perioder mellom 1889 og 1915.

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.

Name of Locality : Øvre Erte 2
(Object Id : 0128,387,01,00)

Location
County : Østfold (01) Municipality : Rakkestad (0128)
Map 1:50000: Sarpsborg (1913-1) Map 1:250000: Oslo
Marking point: Longitude: 11.3421060 Latitude: 59.3386360
EU89-UTM Zone 32 (Coordinates NOT confirmed)
X-coord: 633218 m. Y-coord: 6580102 m.

Commodity
Main Type: Mica minerals Sub Type: Pegmatitic muscovite


The fact sheet was created on 22.11.2024

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