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Norsk versjon | ||||
| THE INDUSTRIAL MINERAL DATABASE | |||||
| Deposit Area 122 - 302 | |||||
| (Last updated 20.nov.2024) | |||||
Name of Deposit Area : Krokedal |
| (Object Id : 0122,302,00,00) |
| Location |
| County : | Østfold (01) | Municipality : | Trøgstad (0122) |
| Map 1:50000: | Fet (1914-1) | Map 1:250000: | Oslo |
| Marking point: | Longitude: | 11.2933150 | Latitude: | 59.7581300 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 628831 m. | Y-coord: | 6626703 m. |
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| Commodity |
| Main Type: | Feldspar | Sub Type: | Pegmatitic feldspar |
| Production |
| Activity: | Mining | Reserves: | ||
| Prod. method: | Open pit mining | Production: | ||
| Prod. status: | Disused, closed | Volume of dump: |
| Importance |
| Public: | (No data) |
| Economical: | Minor interest , (Confirmed 20.nov.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: | ||
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| Igneous complex: |
| Group: | Formation: |
Information(s) in free text format |
| Free text |
| I følge Broch (1934) ble det vinteren 1933-1934 tatt ut en del feltspat og kvarts på en større pegmatittgang ved Krokedal. Den ble drevet i 3-4 måneder. Produksjonen var da 65 tonn feltspat og 50 tonn kvarts. I 1934 var det en åpen, vid skjæring, 15 m lang, 6 m bred og 3 m dyp. |
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 22.11.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |