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THE ORE DATABASE
Occurence 5514 - 006 Breidvoll
(Object Id: 1341)
(Last updated: 26.04.2020)

Location
County: Troms Municipality: Ibestad (5514)
Map 1:50000: Andørja (1332-1) Map 1:250000: Narvik
Coordinate system: EU89-UTM Zone 33
East: 586271 m. North: 7629841 m.
Longitude: 17.1348480 Latitude: 68.7666520
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Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe Cu
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

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


Operations
From - To Activity Comments
1906 - 1907 Pitting
1961 - 1961 Geology Company/Institution :Mannesmann AG

Mineralization
Era: Proterozoic Period: Neoproterozoic
Genesis: Sedex Form: Layer
Main texture: Banded Min. distribution: Semi-massive (20-50 % ore minerals)
Main grain size: Medium grained (1-3 mm) Main alteration:
Strike/Dip: 30 / 20 Direction:
Plunge:
Stratigraphic classification of host rock
Era: Proterozoic Period: Neoproterozoic
Province: Caledonides
Geotec.unit: Seve-Køli Nappe Complex
Tectonic complex:
Igneous complex:
Group: Bogengruppen Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Garnet Major mineral (>10%)
Gangue mineral Amphibole Major mineral (>10%)
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Feldspar Subordinate mineral (1-10%)
Ore mineral Magnetite Major mineral (>10%)
Ore mineral Chalcopyrite Accessory mineral (<1%)

Lithology:
Relationship Rock Origin
Host rock Kalkspatmarmor Sedimentary
Original rock :Limestone
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Foliation Strike/Dip :30 / 20 Post-mineralisation ;...Effect :Modifies
Host rock Primary layering Strike/Dip :30 / 20 Syn-mineralisation ;...Effect :Controls

Information(s) in free text format
Free text
The Breivoll occurrence comprises a minor hill with a minimum two meter thick iron formation. It is ovelain by marble on top of the hill. The banding/foliation of the marble is 20°/20°. Both garnet-rich (Sample JSFE1220) and amphibole-enriched (Sample JSFE1218) magnetite-quartz banded IF occur. In the uppermost part of the iron formations are a minor layer with dissemination of pyrite observed (Sample JSFE1219). Similar mineralisation occurs in a minor 'road cut' further north in Skrinndalen.

Bibliography:
From NGU's Reference Archive:
Boltke, H. , 1962
Ergebnisse der untersuchungen der Eisenerzlagerstatte Rolløya.
;Norges geologiske undersøkelse;TEKNISK RAPPORT;Bergarkivet; No.BA 3252;3 pages
Abstract:
Rapporten gir en kort petrografisk beskrivelse, analyseresultater og oppredningsforsøk av malmen. Malmen er en kvartsbåndet jernmalm med mulig 33 mill. tonn malmmengde. Analyse av råmalm gir 33 % Fe og 12 % Mn. Oppredningsforsøkene er positive, men forskjellige forhold som vanskelig tektonikk, liten mektighet og fasielle overganger til hematitt gjør at forekomsten ansees som uøkonomisk.

Gustavson, Magne , 1974
Harstad. Beskrivelse til det berggrunnsgeologiske gradteigskart M 8 - 1:100 000 (med fargetrykt kart)
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL; KARTBESKRIVELSE;NGU; Skrifter; No.309; 14;1-33 + ka pages
Abstract:
From a structural point of view the bedrocks of the map area can be subdivided into 1. Precambrian basement (autochthonous), and 2. Allochthonous Caledonian units. The Caledonian sequence embraces a) The lowermost over-thrust units, b) The main unit (Harstad Nappe) and c) The upper units (Straumsbotn Nappe and Niingen (?) Nappe). The main unit belongs to the Seve-KÎli Nappe Complex. The bedrock lithoogies within these units are briefly described. Metasediments, metamorphosed igneous intrusive rocks and possible metavolcanics (some amphibolite layers) are met with in the allochthounous sequence together with deformed Precambrian granite. Within the autochthonous Precambrian, granite and granitic gneiss predominate although meta-gabbro covers a large area in the northwestern part. Ore occurrences (magnetic ore, copper etc.) of the "skarn type" are connected with inclusions of metasediments (marble, mica schist etc.) in the Precambrian granite. The deformation history of the area can be subdivided into 3 episodes (F1, F2, F3) of which F1 and F2 are the most important ones. F1 resulted in mainly recumbent folds with an axial plane schistosity. This F1 schistosity is the regional schistosity now observed.

Fieldsamples
Sample No. Sample type Miscellanrous
JSFE1218 Bedrock
Sampler: Jan Sverre Sandstad/...Stored: Løkken/...Size(kg): 2
Comment: Magnetite-quartz-hornblende-garnet banded mineralisation, medium grained
No. of registrated element analyses = 1
No. of registrated oxide analyses = 1
JSFE1219 Bedrock
Sampler: Jan Sverre Sandstad/...Stored: Løkken/...Size(kg): 2
Comment: Banded magnetite-quartz-hornblende/biotite+pyrite, fine-medium grained
No. of registrated element analyses = 1
No. of registrated oxide analyses = 1
JSFE1220 Bedrock
Sampler: Jan Sverre Sandstad/...Stored: Løkken/...Size(kg): 2
Comment: Banded garnet-magnetite-hornblende mineralisation
No. of registrated element analyses = 1
No. of registrated oxide analyses = 1
TR0392.01 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Middelsk. båndet mt-min.
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: 1872 6,00,01)

Location
County: Troms Municipality: Ibestad (5514)
Map 1:50000: Andørja (1332-1) Map 1:250000: Narvik
Coordinate system: EU89-UTM Zone 33
East: 586032 m. North: 7629946 m.
Longitude: 17.1290460 Latitude: 68.7676660
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Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe


Fieldsamples
Sample No. Sample type Miscellanrous
TR0392.02 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Båndet mt-min. med cpy på sprekker.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality: Skrinndalen
(Object Id: 36470 6,01,00)

Location
County: Troms Municipality: Ibestad (5514)
Map 1:50000: Andørja (1332-1) Map 1:250000: Narvik
Coordinate system: EU89-UTM Zone 33
East: 586419 m. North: 7630813 m.
Longitude: 17.1393630 Latitude: 68.7753210
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Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe
Resources and production
Activity: Exploration Reserves:
Operating method: Historical production:


Fieldsamples
Sample No. Sample type Miscellanrous
JSFE1226 Bedrock
Sampler: Jan Sverre Sandstad/...Stored: Løkken/...Size(kg): 2
Comment: Banded magnetite-garnet-quartz-amphibole mineralisation, fine grained
No. of registrated element analyses = 1
No. of registrated oxide analyses = 1
NB! All analyse values are shown at the end of the printout.:


Analyse Results
from
Deposit Area 5514 - 006 Breidvoll

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#
JSFE1218 Bedrock 1 15 1 10 6 3.8
JSFE1219 Bedrock 9 19 1 34 20 2.7
JSFE1220 Bedrock 8 10 1 95 39 2.3
JSFE1226 Bedrock 39 24 1 148 78 2.4
TR0392.01 Bedrock 16 9 -3 11 13 -.3 -2.0
TR0392.02 Bedrock 46 19 5 43 75 -.3 2.0
------------------
Sample No. Pt# Pd# Rh# As* Cd* Ba* Mo* Sb* Bi*
JSFE1218 2 22 0.50
JSFE1219 2 23 0.60
JSFE1220 2 10 1.10
JSFE1226 0 5 0.90
TR0392.01 -3.0 -3.0 -5.0 5 -.2 6 -1.00 5 -2
TR0392.02 -3.0 -3.0 -5.0 3 .4 5 1.00 7 -2
------------------
Sample No. Ga* S% V* Cr* Mn* Fe% Th* U* W*
JSFE1218 7.70 59 14 1.80 0.30
JSFE1219 8.30 66 82 3.10 0.40
JSFE1220 10.80 17 41 2.80 1.10
JSFE1226 10.60 37 14 3.10 0.50
TR0392.01 .17 56 26 3608 30.11 2.00 -5.00 -2
TR0392.02 .29 47 24 6361 16.52 3.00 -5.00 -2
------------------
Sample No. Rb* Sr* Y* Zr* Nb* Ta* Cs* La* Ce*
JSFE1218 4.5 63.7 19.0 41 4.70 0.20 0.05 9.60 20.60
JSFE1219 9.6 67.8 23.4 69 6.80 0.40 0.30 5.20 10.20
JSFE1220 6.2 29.4 40.6 136 5.50 0.50 0.40 7.00 18.20
JSFE1226 1.7 72.9 30.2 81 1.40 0.20 0.50 11.10 22.30
TR0392.01 35.0 6.00
TR0392.02 40.0 13.00
------------------
Sample No. Pr* Nd* Sm* Eu* Gd* Tb* Dy* Ho* Er*
JSFE1218 2.65 9.80 2.29 0.56 2.86 0.42 3.20 0.65 2.18
JSFE1219 1.51 6.80 2.11 0.59 3.10 0.51 3.74 0.76 2.31
JSFE1220 1.92 8.00 2.43 0.82 5.49 0.99 6.94 1.32 3.96
JSFE1226 3.10 12.70 2.92 0.76 4.03 0.62 4.57 0.91 2.89
TR0392.01
TR0392.02
------------------
Sample No. Tm* Yb* Lu* B* Hf*
JSFE1218 0.33 2.30 0.35 0.90
JSFE1219 0.35 2.47 0.42 1.60
JSFE1220 0.56 3.95 0.62 3.30
JSFE1226 0.45 3.18 0.52 1.80
TR0392.01 -3
TR0392.02 -3

Oxide analyses

( All values are in % )
Sample No. Sample Type SiO2 Al2O3 TiO2 Fe2O3 MnO MgO CaO
JSFE1218 Bedrock 45.09 2.70 0.20 44.91 0.52 2.28 4.41
JSFE1219 Bedrock 44.44 5.15 0.29 38.28 1.90 3.09 5.86
JSFE1220 Bedrock 44.77 13.26 0.24 21.11 11.87 1.95 7.26
JSFE1226 Bedrock 45.07 5.70 0.36 33.05 7.25 2.56 4.86
------------------
Sample No. Na2O K2O P2O5 Loss Sum
JSFE1218 0.63 0.25 0.53 -1.11 100.00
JSFE1219 0.67 0.57 0.40 -0.41 100.00
JSFE1220 0.21 0.08 0.23 -0.46 101.00
JSFE1226 0.13 0.03 0.61 -0.52 99.00


The fact sheet was created on 01.05.2024

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