Norsk versjon
THE NATURAL STONE DATABASE
Deposit 3101 - 620 Hov
(Object Id: 9851)
(Last updated: 21.05.2017)
Belongs to the Province: Iddefjord granite

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637691 m. North: 6551734 m.
Longitude: 11.4027070 Latitude: 59.0826630
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Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N): N
Importance
Raw material meaning: National Importance (reg. 21.05.2017)
Historical: Yes , (Confirmed 23.apr.2003 by Tom Heldal)

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


Products
Commercial Name Product description
Iddefjord granitt Classification: Massive blocks Colour: Grayish
Play of colours : Uniformity: Good
Lithology: Granite Grain size: Fine - medium grained (<1mm - 3 mm)

Mineralogy:
Quartz Major mineral (>10%)
Plagioclase Major mineral (>10%)
Microcline Major mineral (>10%)
Biotite Subordinate mineral (1-10%)
Opaque Accessory mineral (<1%)
Titanite Accessory mineral (<1%)
Zircon Accessory mineral (<1%)
Hornblende Accessory mineral (<1%)
Chlorite Accessory mineral (<1%)
Apatite Accessory mineral (<1%)
Muscovite Accessory mineral (<1%)

Photo no. 1 showing Polert plate"

Deposit rock
Lithology: Weathering colour:
Era: Proterozoic Period:
Dating: 918 (-7\+7) million year Method: Rb/Sr
Genesis: Magmatic Form: Massive
Main texture: Structureless
Main grain size: Main alteration:
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Proterozoic Period:
Province: East Norwegian Basement Province
Geotec.unit:
Tectonic complex:
Igneous complex: Iddefjord Batholith
Group: Formation:

Information(s) in free text format
Description
Det finnes tallrike større og mindre nedlagte brudd i forekomsten. Mest kjent er de store bruddene ved sjøen der blokk til bl.a. Vigelandsanleggene ble tatt ut. Så godt som overalt der det er bart fjell i dagen har det vært en eller annen form for tidligere bruddaktivitet og store mengder med rester fra gatesteinsproduksjon ligger igjen mange steder. Forekomsten er nærmere 3 km lang og 1,5 km bred. Benketykkelsen er normalt større enn 1,5 meter, avstanden mellom steile sprekker normalt mer enn 2 meter. Sentralt i dette området finnes et parti med særlig homogen og massiv granitt. En benketykkelse på opptil 5 meter er her ikke uvanlig. Granitten er middels- til grovkornet og grå med brunlig skjær.
Examples
Granitten har blant annet vært blant de viktigste i Vigelandsannlegget, og Monolitten er laget av granitt herfra. Granitten er sterk og holdbar, men i partier i forekomsten finnes svovelkis. Slike kvaliteter kan lett misfarges ved rust.
Historical significance
I dette området ligger steinbruddene der Monolitten i sin tid ble tatt. Flere av de gamle bruddene, særlig langs sjøen, har klart kulturhistorisk verdi.
Location
Forekomsten ligger ca. 4 km rett syd for Halden sentrum, mellom Idd og Iddefjorden.

Photo(s) from the Deposit area:
Photo no. 1 showing Blokk tiltenkt Hitlers seiersmonument"
Photo no. 2 showing Skrotblokk fra bruddet"
Photo no. 3 showing Bruddveggen"
Photo no. 4 showing "Flatt" borhull med spor på sidene"
Photo no. 5 showing Blokk tiltenkt Hitlers seiersmonument"
Photo no. 6 showing Skilt på stien mot bruddet"

Bibliography:
From NGU's Reference Archive:
Gautneb, Håvard ; Øvereng, Odd ; Heldal, Tom , 1999
Granittforekomster i Halden kommune.
;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.99.061;17 pages
Abstract:
Rapporten gir en oversikt over de industrielle aspekter ved natursteinsdrift og variasjonen i Iddefjordsgranitten med hensyn til dens potensiale som naturstein. Ved Iddefjorden har granitten en lengde og bredde på henholdsvis ca. 20 og 4 km. Fra polerte prøveplater har vi delt granitten inn i følgende typer: Type A er middelskornet og noe rødlig i farge og har sin største utbredelse rundt brekke. Type B er middels til grovkornet og grå av farge og opptrer i området Hov-Folkvang-Skriverøya. Type C er lik type B men har en mindre kornstørrelse og finnes i området fra Berby og sørover. Type D er markert forskjellig fra alle andre og er finkornet og lys grå av farge, den finnes i området rundt Liholt. Basert på oppsprekking har vi delt inn granitten i følgende klasser: Klasse 1 (mest massiv) har mer enn 1.5 meter benketykkelse og 2-3 meter mellom vertikale sprekker. Klasse 3 (mest oppsprukket) har mindre enn 1.5 meter benketykkelse og 2-3 meter mellom vertikale sprekker. Granitt av klasse 2 finnes i en smal sone i Hovområdet samt ved Skriverøya; her er det mulig å finne forekomster med liten skrotprosent og stor blokk. Granitt av klasse 2 har ganske stor utbredelse, spesielt vil vi påpeke området nord for Brekke. Her er det mulig å finne forekomster som kan produsere stor blokk, men skrotprosenten vil nok bli høyere enn i området med klasse 1. I områder der granitten er av klasse 3 tror vi det er vanskelig å etablere lønnsom blokkproduksjon.

Pedersen, Svend; Maaløe, Sven , 1990
The Iddefjord granite: geology and age
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU Bulletin; No.417;55-64 pages
Abstract:
The Iddefjord granite forms part of the Swedish Bohus batholith and ranges in composition from diorite to granite. The granite consists of 13 individual plutons, and the mechanism of intrusion is related to block subsidence rather than forceful intrusion. There is no evidence of marginal chill, and the temperature of the host gneiss must have been similar to that of the granites. This suggests that the intrusion took place in a regionally pre-heated rock complex under plutonic conditions. The major element trends of the granites are similar to those of recent granite batholiths. Rb-Sr age determinations carried out on two of the granites yield a common isochron age of 918+- 7Ma with an initial Sr isotope ratio of 0.7063 +- 0.0008 suggesting contributions from older crustal components. Mineral analyses from one of the investigated granite samples indicate a Rb/Sr mineral age in the order of 835 Ma, reflec- ting either a slow cooling of the pluton or a younger thermal effect causing resetting of the mineral system.

Oxaal, John , 1916
Norsk granit
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.76;1-220 pages
Abstract:
This work is a report of granite and the granite industry in Norway. It contains a description of the various fields of granite and similar rocks from a scientific as well as from a technical and economical standpoint. The geological occurrence of the various rocks, their chemical and mineralogical composition, are thoruoughlyoughly treated, also the questions of practical interest, as the quality and other technical properties, further the problems of location and conditions for transport, conditions for quarrying and otherquestions of interest in the utilization of the various occurrences of granite. Granite: This chapter consideres first the mineralogical and chemical composition of the granite, and the various types of granite resulting from the varying composition; thereafter the most important structural types and how these are dependent on the geological appearance of the rock. Lakkolites and other froms assumed by granite masses when injected into the crust of the earth, are mentioned; some examples of beautifully formed lakkolites are also mentioned. The question of sheet structure and rift in the granite are of great importance in its utilization, and are of interest both practically and theoretically.

Fieldsamples
Sample No. Sample type Miscellanrous
24364 Block
Stored: Løkken
Comment: Granitt. Iddefjordstype

Name of Locality: Nokkedal
(Object Id: 14725 620,01,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32 (Coordinates NOT confirmed)
East: 637418 m. North: 6551991 m.
Longitude: 11.3981210 Latitude: 59.0850650
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Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Name of Locality: Monolittbrudd
(Object Id: 14726 620,02,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637145 m. North: 6551470 m.
Longitude: 11.3930410 Latitude: 59.0804700
Show on map

Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Importance
Historical: Yes , (Confirmed 28.apr.2003 by Tom Heldal)

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


Products
Commercial Name Product description
Iddefjordsgranitt Classification: Massive blocks Colour: Grayish
Play of colours : Uniformity:
Lithology: Granite Grain size: Medium grained (1-3 mm)

Photo no. 1 showing Skulptur i Frognerparken, Oslo"
Photo no. 2 showing Skulptur i Frognerparken, Oslo"
Photo no. 3 showing Monolitten i Frognerparken, Oslo"
Photo no. 4 showing Oversiktsbilde av Monolitten og skulpturene rundt."

Information(s) in free text format
Description
Blokka som Monolitten i Frognerparken er hogd ut av ble hentet fra dette bruddet. Diverse kraner og trallebaneskinner ligger igjen og vitner om at her har vært uttak av store blokker.
Location
Bruddet ligger helt i sjøkanten sydvest for Hov.

Photo(s) from the Deposit area:
Photo no. 1 showing Informasjonsskilt ved bruddet"

Name of Locality: Monolittbrudd
(Object Id: 14727 620,03,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637299 m. North: 6551099 m.
Longitude: 11.3954940 Latitude: 59.0771000
Show on map

Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Importance
Historical: Yes , (Confirmed 28.apr.2003 by Tom Heldal)

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


Information(s) in free text format
Description
Ansamling av flere nedlagte brudd.

Name of Locality: Monolittbrudd
(Object Id: 14728 620,04,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637750 m. North: 6551000 m.
Longitude: 11.4032750 Latitude: 59.0760580
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Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Importance
Historical: Yes , (Confirmed 28.apr.2003 by Tom Heldal)

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


Information(s) in free text format
Description
Ansamling av flere nedlagte brudd.

Name of Locality: Hov
(Object Id: 14729 620,05,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637210 m. North: 6552100 m.
Longitude: 11.3945510 Latitude: 59.0861020
Show on map

Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Information(s) in free text format
Description
Ansamling av flere nedlagte brudd.

Name of Locality: Hov Nord
(Object Id: 14730 620,06,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637499 m. North: 6552499 m.
Longitude: 11.3998570 Latitude: 59.0895970
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Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Name of Locality: Hovskasa
(Object Id: 14731 620,07,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637809 m. North: 6551999 m.
Longitude: 11.4049480 Latitude: 59.0850110
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Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Name of Locality: Folkvang
(Object Id: 14732 620,08,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637750 m. North: 6552799 m.
Longitude: 11.4044050 Latitude: 59.0922080
Show on map

Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Fieldsamples
Sample No. Sample type Miscellanrous
24361 Block
Stored: Løkken
Comment: Granitt. Iddefjordstype

Name of Locality: Heltorp
(Object Id: 14733 620,09,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637561 m. North: 6553480 m.
Longitude: 11.4015360 Latitude: 59.0983710
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Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Name of Locality: Svarvestolen
(Object Id: 14734 620,10,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 638212 m. North: 6551549 m.
Longitude: 11.4116730 Latitude: 59.0808430
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Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Name of Locality: Svarvestolen2
(Object Id: 14735 620,11,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 638308 m. North: 6551700 m.
Longitude: 11.4134410 Latitude: 59.0821580
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Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Name of Locality: Hovskasa
(Object Id: 14772 620,12,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637849 m. North: 6552509 m.
Longitude: 11.4059660 Latitude: 59.0895740
Show on map

Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Name of Locality: Hovskasa
(Object Id: 14773 620,13,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 637900 m. North: 6552400 m.
Longitude: 11.4067690 Latitude: 59.0885710
Show on map

Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


Name of Locality: Hov
(Object Id: 14774 620,14,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 638574 m. North: 6552459 m.
Longitude: 11.4185750 Latitude: 59.0888900
Show on map

Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N):
Resources and production
Activity: Stone quarrying Reserves:
Operating method: Open pit mining Historical production:


The fact sheet was created on 28.03.2024

Questions or comments regarding the fact sheet can be emailed to:
ressursdatabaser@ngu.no
Copyright © 2024 Geological Survey of Norway