Norsk versjon
THE ORE DATABASE
Occurence 5042 - 020 Kvartelviktangen
(Object Id: 345)
(Last updated: 16.02.2005)
Location
County: Trøndelag Municipality: Lierne (5042)
Map 1:50000: Tunnsjøen (1924-3) Map 1:250000: Grong
Coordinate system: EU89-UTM Zone 33
East: 435271 m. North: 7179879 m.
Longitude: 13.6406320 Latitude: 64.7373620
Show on map
Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe Kis
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

Resources and production
Activity: Exploration Reserves:
Operating method: Historical production:


Operations
From - To Activity Comments
1996 - 1996 Sampling Company/Institution :NGU

Mineralization
Era: Paleozoic Period: Ordovician
Genesis: Volcex Form: Layer
Main texture: Banded Min. distribution: Massive (>50 % ore minerals)
Main grain size: Fine grained (< 1 mm) Main alteration: No country rock alteration
Strike/Dip: 95 / 10 Direction:
Plunge:
Stratigraphic classification of host rock
Era: Paleozoic Period: Ordovician
Province: Caledonides
Geotec.unit: Køli Nappe Complex
Tectonic complex: Gjersvik Nappe
Igneous complex:
Group: Limingen Formation: Devik greenstone

Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Chlorite Subordinate mineral (1-10%)
Gangue mineral Epidote Subordinate mineral (1-10%)
Ore mineral Pyrite Major mineral (>10%)
Ore mineral Magnetite Major mineral (>10%)

Lithology:
Relationship Rock Origin
Host rock Chert Sedimentary
Original rock :Exhalite
Metamorphic facies :Greenschist
Wall rock Greenstone Extrusive
Original rock :Basalt
Metamorphic facies :Greenschist

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Wall rock Foliation Strike/Dip :95 / 10 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format
Free text
Mineraliseringen ligger øst for Kvartelviktangen, ved Vargkjeften nede ved stranda langs Limingen. Til fots kommer man til forekomsten ved å gå fra gården Sandnes ved Tunnsjøen, ellers er den lett tilgjengelig med båt på Limingen. Den kan best studeres ved lav vannstand i sjøen, men er også blottet ved normal vannstand. Det er ikke tegn på røsking av betydning i området. Mineraliseringen består av flere lag med massiv magnetitt i veksling med massiv svovelkis. I hovedforekomsten opptrer det mektigste laget som er ca. 3 m mektig. Det består hovedsakelig av massiv magnetitt (prøve NT0413.05), med 30 cm mektig, massiv svovelkis i liggen (prøve NT0413.04). Grønnstein ligger både over og under den tilnærmet flattliggende malmsona. Flere smalere jernformasjon-soner (prøve JS96023) og renere chert-lag er observert langs stranda lengre mot vest. De ligger i grønnstein som gjerne er epidotrik. Få dm-tykke hydrotermale kvartsårer med sulfider er antatt å være mobilisert fra malmsonene. Mineraliseringene er svært lik jernformasjonene på nordøstsida av Limingen i Borvassfeltet.

Bibliography:
From NGU's Reference Archive:
Oftedahl, Christoffer , 1958
Oversikt over Grongfeltets skjerp og malmforekomster.
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.202;1-75 + fo pages
Abstract:
Ore occurences of the Grong area: In the period 1910-1918 a great number of ore occurences were discovered in the Grong area. The late state geologist Steinar Foslie mapped the area in the years 1922-1931. Foslie also mapped all claims and occurences and made special field investigations in a few cases. This book presents a survey of all occurences chiefly based on the field observations of Foslie. In addition the present author has done some field work in connection with the three large deposits, Joma, Skorovass, and Gjersvik. The map, Plate 1, shows the areal geology and the location of the occurrences, numbered from 1 to 131. the ore of the occurrences is chiefly pyrite. The larger occurrences also contain some chalcopyrite and sphalerite etc. and the smaller occurrences contain ither pure pyrite with some magnetite. The Joma deposit (No. 1), contains about 15.5 mill. tons of ore. The ore zone forms an arc and is situated within a thick series of greenstones (Fig. 1). The Skorovass mine (No. 2), contains about 7,5 mill. tons of ore. The deposit is situated in a greenstone complex (Fig. 7), and is immediately surrounded by asid tuffs of quartz keratophyric composition (Table 1).

Fieldsamples
Sample No. Sample type Miscellanrous
NT0413.04 Bedrock
Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2
Comment: Pyrite ore, massive to semi-massive, fine- to medium-grained, quartz matrix.
No. of registrated element analyses = 1
NT0413.05 Bedrock
Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2
Comment: Magnetite ore, massive, very fine grained, quartz-rich matrix.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Sample point: Prøvepkt. 1
(Object Id: 8981 20,00,01)
Location
County: Trøndelag Municipality: Lierne (5042)
Map 1:50000: Tunnsjøen (1924-3) Map 1:250000: Grong
Coordinate system: EU89-UTM Zone 33
East: 435131 m. North: 7179959 m.
Longitude: 13.6376570 Latitude: 64.7380520
Show on map
Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe Kis


Fieldsamples
Sample No. Sample type Miscellanrous
JS96023 Bedrock
Sampler: Sandstad, J.S./...Stored: Løkken
Comment: BIF, massive magnetite, epidote and chert lenses/laminae.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality: Kvartelviktangen
(Object Id: 518 20,01,00)
Location
County: Trøndelag Municipality: Lierne (5042)
Map 1:50000: Tunnsjøen (1924-3) Map 1:250000: Grong
Coordinate system: EU89-UTM Zone 33
East: 435031 m. North: 7180059 m.
Longitude: 13.6355110 Latitude: 64.7389300
Show on map
Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe Kis
Resources and production
Activity: Exploration Reserves:
Operating method: Historical production:


Operations
From - To Activity Comments
1996 - 1996 Sampling Company/Institution :NGU

Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Chlorite Subordinate mineral (1-10%)
Gangue mineral Epidote Subordinate mineral (1-10%)
Ore mineral Pyrite Major mineral (>10%)

Lithology:
Relationship Rock Origin
Host rock Greenstone Extrusive
Original rock :Basalt
Metamorphic facies :Greenschist

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Wall rock Foliation Strike/Dip :25 / 15 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format
Free text
Mineraliseringen ligger helt nede ved vannkanten til Limingen, ca. 300 m nordvest for hovedforekomsten. Et tilnærmet flattligende, opptil 15 cm mektig lag med massiv pyritt er blottet ved lav vannstand (prøve NT0413.03). Denne gjennomskjæres av en 10-20 cm mektig kvartsåre som har sterk disseminasjon av pyritt (prøve NT0413.02). En epidotrik grønnstein ligger over sulfidlaget som kan følges 3-4 m langs strøket. Magnetitt er ikke blottet i denne lokaliteten. I prøvelokaliteten finnes svak til sterk disseminasjon av pyritt i en kvarts- og epidot-rik grønnstein (prøve NT0413.01). Denne rustsonen er opptil 10 cm bred og kan følges få ti-talls meter langs strøket som har orientering 70°/15°.

Bibliography:
From NGU's Reference Archive:
Oftedahl, Christoffer , 1958
Oversikt over Grongfeltets skjerp og malmforekomster.
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.202;1-75 + fo pages
Abstract:
Ore occurences of the Grong area: In the period 1910-1918 a great number of ore occurences were discovered in the Grong area. The late state geologist Steinar Foslie mapped the area in the years 1922-1931. Foslie also mapped all claims and occurences and made special field investigations in a few cases. This book presents a survey of all occurences chiefly based on the field observations of Foslie. In addition the present author has done some field work in connection with the three large deposits, Joma, Skorovass, and Gjersvik. The map, Plate 1, shows the areal geology and the location of the occurrences, numbered from 1 to 131. the ore of the occurrences is chiefly pyrite. The larger occurrences also contain some chalcopyrite and sphalerite etc. and the smaller occurrences contain ither pure pyrite with some magnetite. The Joma deposit (No. 1), contains about 15.5 mill. tons of ore. The ore zone forms an arc and is situated within a thick series of greenstones (Fig. 1). The Skorovass mine (No. 2), contains about 7,5 mill. tons of ore. The deposit is situated in a greenstone complex (Fig. 7), and is immediately surrounded by asid tuffs of quartz keratophyric composition (Table 1).

Fieldsamples
Sample No. Sample type Miscellanrous
NT0413.02 Bedrock
Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2
Comment: Strong dissemination of pyrite in quartz vein within massive greenstone. Weak dissemination of pyrite in greenstone.
No. of registrated element analyses = 1
NT0413.03 Bedrock
Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2
Comment: Pyrite ore, massive, fine- to medium-grained, partly quartz-rich matrix and epidote-chlorite rich fragments.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Sample point: Prøvepunkt 1
(Object Id: 3902 20,01,01)
Location
County: Trøndelag Municipality: Lierne (5042)
Map 1:50000: Tunnsjøen (1924-3) Map 1:250000: Grong
Coordinate system: EU89-UTM Zone 33
East: 434951 m. North: 7180228 m.
Longitude: 13.6337550 Latitude: 64.7404390
Show on map
Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe Kis


Fieldsamples
Sample No. Sample type Miscellanrous
NT0413.01 Bedrock
Sampler: Sandstad, J.S./...Stored: Løkken/...Size(kg): 2
Comment: Weak to strong dissemination of pyrite in quartz-epidote rich layers (5-10 cm) in greenstone. Some mm-thick magnetite bands.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Analyse Results
from
Deposit Area 5042 - 020 Kvartelviktangen

Element analyses
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.)
Sample No. Sample Type Cu* Zn* Pb* Co* Ni* Ag* Au#
JS96023 Bedrock 15 46 -3 16 77 -.3 13.0
NT0413.01 Bedrock 781 133 -3 31 23 .5 48.0
NT0413.02 Bedrock 43 42 7 46 3 -.3 11.0
NT0413.03 Bedrock 142 32 -3 144 17 -.3 2.0
NT0413.04 Bedrock 142 106 95 32 50 .4 8.0
NT0413.05 Bedrock 118 157 -3 24 61 -.3 4.0
------------------
Sample No. Pt# Pd# Rh# As* Cd* Ba* Mo* Sb* Bi*
JS96023 2.0 2.0 -1.0 10 2.1 5 -1.00 -2 -2
NT0413.01 4.0 1.0 -1.0 3 .3 1 -1.00 -2 -2
NT0413.02 2.0 -1.0 -1.0 10 .5 4 6.00 -2 -2
NT0413.03 1.0 -1.0 -1.0 11 .4 3 7.00 3 -2
NT0413.04 3.0 -1.0 -1.0 192 -.2 10 -1.00 -2 -2
NT0413.05 5.0 5.0 2.0 6 1.0 5 -1.00 -2 -2
------------------
Sample No. S% V* Cr* Mn* Fe% Th* U* W* Sr*
JS96023 -.01 301 44 587 30.95 -2.00 6.00 -2 41.0
NT0413.01 1.93 143 35 778 11.23 2.00 -5.00 -2 23.0
NT0413.02 6.92 37 7 757 12.20 -2.00 -5.00 -2 22.0
NT0413.03 34.45 55 23 454 19.54 -2.00 -5.00 -2 37.0
NT0413.04 30.21 34 15 300 22.73 -2.00 -5.00 -2 15.0
NT0413.05 -.01 172 54 4488 33.19 9.00 -5.00 -2 24.0
------------------
Sample No. La* B*
JS96023 1.00 -3
NT0413.01 -1.00 -3
NT0413.02 -1.00 -3
NT0413.03 -1.00 -3
NT0413.04 3.00 8
NT0413.05 7.00 -3

The fact sheet was created on 04.05.2024
Questions or comments regarding the fact sheet can be emailed to:
ressursdatabaser@ngu.no
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