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THE INDUSTRIAL MINERAL DATABASE
Occurence 3118 - 308 Knoll
(Object Id: 8897)
(Last updated: 25.01.2023)

Location
County: Østfold Municipality: Indre Østfold (3118)
Map 1:50000: Askim (1914-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 629307 m. North: 6599782 m.
Longitude: 11.2852880 Latitude: 59.5164400
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Resource
Resource Type: Feldspar Resource Subtype: Pegmatitic feldspar

Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

Resources and production
Activity: Test mining Reserves:
Operating method: Open pit mining Historical production:


Mineralization
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 ligger på vestskråningen av en liten ås ca. 150 m NØ for gården Knoll, ca. 1.5 VSV for Eidsberg kirke. Her er det beskrevet et vannfylt brudd på 5x8 meter. Forekomsten ble drevet på feltspat i 1890 årene.
Location
Flyttet fra EU89-UTM sone 32 6596292 N 629218 E 25.1. 2023 basert på beskrivelser hos Broch (1934): Ligger i vestskråningen av en liten ås vel 150 m nordøst for gården ved bilvei. Ca 1,5 km fra Eidsberg kirke,

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 28.03.2024

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