(Last updated: 22.08.2024)
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Norsk versjon | ||||
| THE INDUSTRIAL MINERAL DATABASE | |||||
| Occurence 3120 - 370 Bergenhus | |||||
| (Object Id: 8906) (Last updated: 22.08.2024) |
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| Location |
| County: | Østfold | Municipality: | Rakkestad (3120) |
| Map 1:50000: | Sarpsborg (1913-1) | Map 1:250000: | Oslo |
| Coordinate system: | EU89-UTM Zone 32 | (Coordinates NOT confirmed) |
| East: | 633418 m. | North: | 6589092 m. |
| Longitude: | 11.3512080 | Latitude: | 59.4192280 |
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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: | Mining | Reserves: | ||
| Operating method: | Open pit mining | Historical production: |
Products |
| Element/product | Crude ore grade or quality | Reg. date | |
| Pegmatitic feldspar | % | 15.10.2024 |
Mineralization |
| Genesis: | Form: | |||
| Main texture: | Min. distribution: |
| Main grain size: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
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| Igneous complex: |
| Group: | Formation: |
Information(s) in free text format |
| Free text |
| Broch (1934) beskriver beliggenheten som 600 m vestsydvest for gården Bergenhus og 100 m nordøst for sportsplassen. Gruva skal ha vært i drift i flere perioder fra 1880 til 1925 og det ble utvunnet primært feltspat og litt glimmer. "Det sees nu som en vannfylt grop med lengderetninge øst-vest og steile vegger. Vidden er i dagen 6x35 m, dybden angivelig 10 m. I østenden skal der være en tunnel som blev revet inn omkring 1925." (Broch, 1934) |
| Location |
| Ut fra stedsbeskrivelsen til Broch (1934) bør rett koordinater være EU89 UTM sone 32 633512 6589171 som (90 år etter Brochs angivelse) ligger midt i et boligfelt mellom Ekornstien og Hareveien. |
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 03.07.2025 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2025 Geological Survey of Norway |