Norsk versjon
THE NATURAL STONE DATABASE
Occurence 3101 - 607 Liholt
(Object Id: 9826)
(Last updated: 16.02.2010)
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: 640756 m. North: 6546210 m.
Longitude: 11.4526150 Latitude: 59.0321070
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Resource
Resource Type: Granite and other igneous rocks Resource Subtype: Granite
Brickstone(Y/N): N
Importance
Raw material meaning: Not Assessed (reg. 21.03.2017)

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


Products
Commercial Name Product description
Liholtgranitt, Iddefjordsgranitt Classification: Massive blocks Colour: Gray
Play of colours : Uniformity: Medium good
Lithology: Granite Grain size: Fine grained (< 1 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"

Operations
From - To Activity Comments
1860 - 1975 Regular production Company/Institution :Diverse

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
Liholt er et av de klassiske områdene for natursteinsdrift langs Iddefjorden helt fra begynnelsen av 1900-tallet. En smalsporet jernbane var anlagt fra Liholttjern og ned til sjøen. Liholtområdet var det første sted rundt Iddefjorden med større skala natursteinsdrift, og driften startet allerede i 1870-årene. I deler av forekomsten opptrer "normal" Iddefjordsgranitt - middelskornet grå. Imidlertid finnes også en lys grå, finkornet type som utgjør flere av de gamle bruddene i forekomsten. Forekomsten dekker et område på rundt 1,5 km lengde og 600 meter bredde. Sprekketetthet og benkeavstand er variabel, men det er mulig å lokalisere partier egnet for produksjon av store blokker.
Examples
Det antas at det i første rekke var gatestein som ble produsert i Liholtbruddene.
Location
Forekomsten ligger 10 km sør for Halden sentrum, og er lett tilgjengelig fra veg.

Photo(s) from the Deposit area:
Photo no. 1 showing Trasé for jernbane"
Photo no. 2 showing Fra bruddområdet"
Photo no. 3 showing Bruddområdet dekker et betydelig areal"
Photo no. 4 showing Fra bruddområdet"

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.

Name of Locality: Liholttjernet
(Object Id: 14759 607,01,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 641450 m. North: 6546649 m.
Longitude: 11.4649600 Latitude: 59.0358170
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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: Liholt
(Object Id: 14760 607,02,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 640849 m. North: 6546200 m.
Longitude: 11.4542270 Latitude: 59.0319780
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: Liholt
(Object Id: 14761 607,03,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 640449 m. North: 6546350 m.
Longitude: 11.4473600 Latitude: 59.0334560
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: Liholt
(Object Id: 14762 607,04,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 640200 m. North: 6546100 m.
Longitude: 11.4428500 Latitude: 59.0312950
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: Liholt
(Object Id: 14763 607,05,00)

Location
County: Østfold Municipality: Halden (3101)
Map 1:50000: Halden (1913-2) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32
East: 640603 m. North: 6545500 m.
Longitude: 11.4494810 Latitude: 59.0257790
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 20.04.2024

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