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THE INDUSTRIAL MINERAL DATABASE
Occurence 5501 - 326 Rødberg
(Object Id: 7298)
(Last updated: 11.10.2010)
Location
County: Troms Municipality: Tromsø (5501)
Map 1:50000: Lyngen (1634-3) Map 1:250000: Nordreisa
Coordinate system: EU89-UTM Zone 34
East: 462375 m. North: 7718951 m.
Longitude: 20.0338560 Latitude: 69.5765690
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Resource
Resource Type: Olivine Resource Subtype: Olivine

Importance
Raw material meaning: Not Assessed (reg. 18.02.2015)

Resources and production
Activity: Exploration Reserves:
Operating method: 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
Rødberg-ultramafitten ligger innerst i Kjosen, på Lyngenhalvøya. Forekomsten har en meget gunstig beliggenhet rett i sjøkanten. Den består av lagdelt peridotitt med soner av dunitt og wehrlitt i veksling som stryker N-S. Den generelle serpentiniseringsgraden er omtrent 30%. Kromittinnholdet er ca. 2%. Olivin har et MgO-innhold som tilsvarer Fo 88. Friske partier er grovkornet, men er gjennomsatt av finkornete serpentiniserte årer. Forekomsten har en del ganske store kromittårer. Det er også en skjærsone som kutter kroppen. Forekomsten er undersøkt av Grenne (1988) med henblikk på edelmetallforekomster.

Bibliography:
From NGU's Reference Archive:
Andreassen, Tor Otto , 1994
Kleber i Troms
;Mineralutvikling AS;RAPPORT;14 bl. pages

Boyd, R.; Minsaas, O. , 1983
Lyngstuva. Berggrunnskart; Lyngstuva; 16344; 1:50 000; sort/hvitt;
;Norges geologiske undersøkelse;KART

Boyd, R.; Mikalsen, T.; Minsaas, O.; Zwaan, K. B. , 1984
Storfjord. Berggrunnskart; Storfjord; 16334; 1:50 000; sort/hvitt;
;Norges geologiske undersøkelse;KART

Kjølle, Idunn ; Lund, Bjørn , 1999
Undersøkelser av skifer og ultramafiske forekomster i Troms.
;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.99.075;24 pages
Abstract:
Det er foretatt natursteinsundersøkelser i Troms i forbindelse med gjennomføringen av det geologiske fylkesprogrammet. Dette er et flerårig samarbeidsprosjekt mellom NGU og Troms Fylkeskommune som skal gi en oversikt over geologien i fylket, deriblant de mineralske ressurser. Natursteinsundersøkelsene har i denne omgang omfattet forekomster av skifer og ultramafiske bergarter, steintyper som tradisjonelt har vært og fortsatt er av viktighet innen fylket. Undersøkte objekter ble utvalgt med bakgrunn i materiale fra tidligere arbeid og dagens etterspørsel i natursteinsmarkedet, samt ut fra forslag fra industrien. Disse omfattet lys skifer ved Svartnes, flere brudd antatt tilhørende samme skifersone i Reisadalen, og de ultramafiske forekomstene Grunnes, Rødberg, Lavika og Finnhaugen. For Svartnes-skiferen indikerer resultatene at den utnyttbare delen av forekomsten utgjør en begrenset ressurs og neppe kan drives som en selvstendig enhet. Den lyse spalteflaten er imidlertid etterspurt i markedet og det er mulig at denne skiferen kan drives som et supplement til en annen skiferdrift og gi et nyttig tilskudd til varespekteret. Forekomstene Holmbo, Sappen og Tjuvdalen i Reisadalen tilhører en skifersone vi anser å ha et forholdsvis stort potensiale. Ut fra sonens store utstrekning, observerte mektigheter og kvalitet kan det være muligheter for lønnsom drift, spesielt for veinære deler av sonen. Den gode skiferkvaliteten kan nå opp i 9 m tykkelse, og total mektighet kan økes ytterligere dersom den marginale skiferkvaliteten kan utnyttes. Ingen av de befart ultramafiske forekomstene, forutenom Grunnes som er i produksjon, synes egnet for natursteinsdrift. Rødberg-forekomsten er stor og kan virke interessant, men beliggenheten er ugunstig og blokkstørrelsen synes utilstrekkelig i forhold til forventet prisnivå på steinen.

Zwaan, K.B. , 1988
Nordreisa. Berggrunnskart Nordreisa M 1:250 000; trykt i farger
;Norges geologiske undersøkelse;KART;1 kart pages
Abstract:
Beskrivelsen finnes på kartet.

Fieldsamples
Sample No. Sample type Miscellanrous
NGUAK96069 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUAK96070 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUAK96071 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUAK96072 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUAK96073 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUAK96074 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUAK96075 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUAK96076 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUAK96077 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUAK96078 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUHG96065 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUHG96066 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUHG96067 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUHG96068 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUHG96069 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUHG96070 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NGUHG96071 Bedrock
Comment: This is a dummy sample that does not excists. The assosciated analyses have been compiled from various published and unpublished reports
No. of registrated oxide analyses = 1
NB! All analyse values are shown at the end of the printout.:

Analyse Results
from
Deposit Area 5501 - 326 Rødberg

Oxide analyses
( All values are in % )
Sample No. Sample Type SiO2 Al2O3 TiO2 Fe2O3 MnO MgO CaO
NGUAK96069 Bedrock 37.90 0.18 0.00 10.10 0.14 45.10 0.33
NGUAK96070 Bedrock 36.90 0.36 0.00 10.50 0.15 39.20 1.50
NGUAK96071 Bedrock 37.00 0.12 0.00 11.10 0.15 39.10 0.08
NGUAK96072 Bedrock 35.70 0.13 0.00 9.10 0.13 41.80 0.08
NGUAK96073 Bedrock 35.50 0.12 0.00 9.20 0.13 41.90 0.11
NGUAK96074 Bedrock 51.60 1.24 0.00 3.70 0.09 23.20 17.31
NGUAK96075 Bedrock 36.40 0.23 0.00 11.80 0.17 40.90 0.41
NGUAK96076 Bedrock 36.80 0.20 0.00 14.10 0.18 39.60 0.09
NGUAK96077 Bedrock 36.20 0.08 0.00 8.30 0.12 43.90 0.15
NGUAK96078 Bedrock 36.60 0.21 0.00 12.80 0.12 37.30 0.05
NGUHG96065 Bedrock 37.40 0.23 0.00 10.20 0.14 45.10 0.15
NGUHG96066 Bedrock 36.60 0.14 0.00 10.20 0.14 42.90 0.10
NGUHG96067 Bedrock 36.20 0.08 0.00 9.40 0.12 43.40 0.09
NGUHG96068 Bedrock 37.00 0.12 0.00 11.10 0.15 41.90 0.11
NGUHG96069 Bedrock 35.60 0.12 0.00 11.50 0.15 40.40 0.06
NGUHG96070 Bedrock 35.20 0.26 0.00 11.20 0.15 40.90 0.33
NGUHG96071 Bedrock 36.20 0.23 0.00 10.70 0.15 41.70 0.69
------------------
Sample No. Na2O K2O P2O5 Loss Sum
NGUAK96069 0.01 0.00 0.00 5.68 99.00
NGUAK96070 0.01 0.00 0.00 7.68 96.00
NGUAK96071 0.00 0.00 0.00 12.18 100.00
NGUAK96072 0.01 0.00 0.00 12.92 100.00
NGUAK96073 0.01 0.00 0.00 12.97 100.00
NGUAK96074 0.30 0.01 0.00 1.86 99.00
NGUAK96075 0.01 0.00 0.00 9.80 100.00
NGUAK96076 0.00 0.00 0.00 9.17 100.00
NGUAK96077 0.00 0.00 0.00 10.57 99.00
NGUAK96078 0.00 0.00 0.00 12.12 99.00
NGUHG96065 0.02 0.00 0.00 6.55 100.00
NGUHG96066 0.01 0.00 0.00 9.65 100.00
NGUHG96067 0.00 0.00 0.00 10.80 100.00
NGUHG96068 0.00 0.00 0.00 9.50 100.00
NGUHG96069 0.00 0.00 0.00 12.10 100.00
NGUHG96070 0.00 0.00 0.00 10.55 99.00
NGUHG96071 0.02 0.00 0.00 8.59 98.00

The fact sheet was created on 02.05.2024
Questions or comments regarding the fact sheet can be emailed to:
ressursdatabaser@ngu.no
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