Fact Sheet for Deposit Area 1853

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 1853 - 015
	(Last updated 20.mar.2024)

Name of Deposit Area : Bergvik

(Object Id : 1853,015,00,00)

Location

County :

Nordland (18)

Municipality :

Evenes (1853)

Map 1:50000:

Astafjorden (1332-2)

Map 1:250000:

Narvik

Marking point:

Longitude:

17.0075820

Latitude:

68.5206380

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-coord:

582024 m.

Y-coord:

7602250 m.

Commodity

	Main Type:	Ferrous metals(Fe, Mn, Ti)	Sub Type:	Iron
			Element(s):	Fe

Production

Activity:	Mining	Reserves:	160 thousand tons
Prod. method:	Open pit mining	Production:	1000 thousand tons
Prod. status:	Disused, closed	Volume of dump:	30000 m3

Importance

Public: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 25.feb.2005 by Agnes Raaness)

Products

Element/product Crude ore grade or quality

FE 31.7 %

FE_HEM 5 %

FE_MAG 26 %

S .4 %

Operations

From - To Activity Comments

1906 - 1909 Regular production Company/Institution :Svensk selskap, A/B Ofoten Malmfeldt

1906 - 1939 Core drilling

1913 - 1914 Regular production Company/Institution :Engelsk selskap, Ofoten Malmfeldt

1917 - 1923 Regular production Company/Institution :Tysk, Beer Sondheimer

1931 - 1935 Regular production Company/Institution :Arbeiderselskapet

1936 - 1939 Regular production Company/Institution :A/S Sydvaranger

1976 - 1976 Geology Company/Institution :Rana Gruber

2012 - 2014 Geology Company/Institution :NGU

Mineralization

Era: Proterozoic Period: Neoproterozoic

Dating: Method:

Genesis: Sedex Form: Layer

Main texture: Banded Min. distribution: Massive (>50 % ore minerals)

Main grain size: Coarse grained (> 3 mm) Main alteration:

Strike/Dip: 120 / 35 Direction: 280

Plunge: 30

Stratigraphic classification of host rock

Era: Proterozoic Period: Neoproterozoic

Province: Caledonides

Geotec.unit: Seve-Køli Nappe Complex

Tectonic complex: Øvre allokton

Igneous complex:

Group: Bogengruppen Formation: Håfjell jernmalmformasjon

Mineralogy

Relationship Mineral Amount

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Apatite Accessory mineral (<1%)

Ore mineral Magnetite Major mineral (>10%)

Ore mineral Hematite Subordinate mineral (1-10%)

Ore mineral Pyrite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Unknown Karbonatgl.skifer Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Structures

Location: Type: Orientation(360 gr.): Relation to min.:

Unknown Fold axis Strike/Dip :120 / 30 Syn-mineralisation ;...Effect :None

Information(s) in free text format

Free text

The Bogen Fe ore field consists of a number of workings over a strike length of c. 6 km. About 1.6 mill.t of magnetite ore was produced from three open pits with associated underground workings (Øvre and Nedre Kleven, Bergvik) between 1906 and 1939 (several periods). The ore occurs in several layers and lenses of semimassive ore, varying in thickness from less than 2 meters and up to c. 10 meters, typically separated by amphibolitic layers often with magnetite impregnation. The total thickness of the mineralized zone varies from c. 10 meters to 100-200 meters. The zone is strongly deformed and is folded into a number of recumbent tight to isoclinals fold structures, which have disrupted the ore layers and increased considerably the thickness in the fold closures. The mineralized zone is situated between calcareous mica schist (structurally below) and calcite marble (structurally above). The ore is generally banded/laminated on mm to cm scale, with alternating quartz, amphibole +/- biotite and magnetite layers. At places the ore contains thin manganese-rich or/and hematite-rich layers, typically in the structurally upper and lower parts, respectively.

Bibliography:

From NGU's Reference Archive:

Bottke, H. , 1962

Geologisches Gutachten zur Geologie Mit den Vorråten der Eisenerzlagerstatte Bogen/Ofoten.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 3250;11 pages

Abstract:

Rapporten er resultatet av en befaring. Den beskriver jernforekomstene i Bogenfeltet. Forekomstene i nordfeltet består av 3 linseformige malmkropper. beregning av malmforrådet lot seg ikke gjennomføre. Forekomstene i sydfeltet berøres av en komplisert tektonikk. Maksimal mulig størrelse er 16 mill. tonn råmalm = 4 mill tonn konsentrat med 66-69 % fe. Bogenforekomstene regnes av forf ikke å være drivverdige pga. malmforråd og tektonske og facielle forhold.

Bachke, A. P.; Thesen, G. , 1904

Utskrift av utmålsprotokoll for Bogen jernmalmfelt i Ofoten.

;Norges geologiske undersøkelse;RAPPORT;Bergarkivet; No.BA 3518;33 pages

Abstract:

Rapporten består av to deler: En utmålsprotokoll for 1902 og en for 1904. I 1902 gjaldt utmålene forekomster på gårdene Bergvik, Bergviknes og Kleven i Evenes Sogn, i 1904 er forekomster på gården Kleven, Lenvik og Lenviksmark nevnt. Rapporten bærer mer preg av rettsprotokoll enn geologisk rapport, og det er en masse krangel om utmål på innmark og slåttemark og rettigheter til forekomstene slik at rapporten nå har vel mest lokalhistorisk intresse. Det nevnes knapt at malmen består av magnetitt (magnetjern) men for spesielt interesserte går det nok an å finne tilbake til mutningspunktene etter beskrivelse i rapporten.

References not to be found in NGU's Reference Archive.:

Søvegjarto, U. 1978: Bogen jernmalmfelt. Sluttrapport geologi. Int. rapp. Rana Gruber A/S. 10 sider, 51 bilag.

Fieldsamples

Sample No. Sample type Miscellanrous

NO0277.01 Bedrock

Sampler :Sørdal, T./...Stored :Løkken

Comment :Magnetittmalm, båndet med py-krystaller.

No. of registrated element analyses = 1

NO0277.02 Bedrock

Sampler :Sørdal, T./...Stored :Løkken

Comment :Magnetittmalm, massiv.

No. of registrated element analyses = 1

NO0277.03 Bedrock

Sampler :Sørdal, T./...Stored :Løkken

Comment :Magnetittmalm.

No. of registrated element analyses = 1

NO0277.04 Bedrock

Sampler :Sørdal, T./...Stored :Løkken

Comment :Magnetittmalm, massiv.

No. of registrated element analyses = 1

NB! All analyse values are shown at the end of the printout.:

Name of Sample point : Prøvepunkt

(Object Id : 1853,015,00,01)

Location

County : Nordland (18) Municipality : Evenes (1853)

Map 1:50000: Astafjorden (1332-2) Map 1:250000: Narvik

Marking point: Longitude: 17.0079950 Latitude: 68.5208750

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 582041 m. Y-coord: 7602277 m.

Commodity

Main Type: Ferrous metals(Fe, Mn, Ti) Sub Type: Iron

Element(s): Fe

Fieldsamples

Sample No. Sample type Miscellanrous

Bergvik-2 Bedrock

Sampler :Bjerkgård/Raaness/...Stored :Løkken

Comment :Pyrittrik, båndet magnetittmalm

No. of registrated oxide analyses = 1

NB! All analyse values are shown at the end of the printout.:

Name of Sample point : Prøvepunkt

(Object Id : 1853,015,00,02)

Location

County : Nordland (18) Municipality : Evenes (1853)

Map 1:50000: Astafjorden (1332-2) Map 1:250000: Narvik

Marking point: Longitude: 17.0096980 Latitude: 68.5199300

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 582114 m. Y-coord: 7602173 m.

Commodity

Main Type: Ferrous metals(Fe, Mn, Ti) Sub Type: Iron

Element(s): Fe

Fieldsamples

Sample No. Sample type Miscellanrous

Bergvik-3 Bedrock

Sampler :Bjerkgård/Raaness/...Stored :Løkken

Comment :cm-båndet kvarts-magnetittmalm, granatholdig

No. of registrated oxide analyses = 1

NB! All analyse values are shown at the end of the printout.:

Name of Sample point : Prøvepunkt

(Object Id : 1853,015,00,03)

Location

County : Nordland (18) Municipality : Evenes (1853)

Map 1:50000: Astafjorden (1332-2) Map 1:250000: Narvik

Marking point: Longitude: 17.0098380 Latitude: 68.5198570

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 582119 m. Y-coord: 7602166 m.

Commodity

Main Type: Ferrous metals(Fe, Mn, Ti) Sub Type: Iron

Element(s): Fe

Fieldsamples

Sample No. Sample type Miscellanrous

Bergvik-4 Bedrock

Sampler :Bjerkgård/Raaness/...Stored :Løkken

Comment :mm-cm båndet kvarts-magnetittmalm med spredt pyritt

No. of registrated oxide analyses = 1

NB! All analyse values are shown at the end of the printout.:

Analyse Results

from

Deposit Area 1853 - 015 Bergvik

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#

NO0277.01 Bedrock 1 31 2 21 8 .1 1.0

NO0277.02 Bedrock 2 34 3 13 7 .1 1.0

NO0277.03 Bedrock 216 42 2 50 28 1.0 14.0

NO0277.04 Bedrock 2 43 3 21 11 .1 5.0

------------------

Sample No. Pt# Pd# As* Cd* Ba* Mo* Sb* Bi* S%

NO0277.01 3.0 3.0 3 .3 7 1.00 2 7 .13

NO0277.02 3.0 3.0 2 .2 284 1.00 2 2 .01

NO0277.03 5.0 3.0 10 .3 12 1.00 2 2 15.35

NO0277.04 3.0 3.0 4 .6 52 1.00 2 2 .02

------------------

Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*

NO0277.01 34 19 607 30.15 2.00 5.00 1 51.0 3.00

NO0277.02 32 23 288 19.62 2.00 5.00 1 22.0 10.00

NO0277.03 30 22 549 20.54 4.00 5.00 2 39.0 21.00

NO0277.04 40 17 814 26.48 2.00 5.00 1 93.0 4.00

------------------

Sample No. B*

NO0277.01 2

NO0277.02 2

NO0277.03 2

NO0277.04 2

Oxide analyses
( All values are in % )

Sample No. Sample Type SiO2 Al2O3 TiO2 Fe2O3 MnO MgO CaO

Bergvik-2 Bedrock 27.74 4.08 0.24 45.03 0.14 2.75 5.96

Bergvik-3 Bedrock 45.14 8.88 0.42 27.04 4.05 3.21 8.03

Bergvik-4 Bedrock 33.39 4.19 0.29 48.67 0.27 3.30 7.12

------------------

Sample No. Na2O K2O P2O5 Loss Sum

Bergvik-2 0.43 0.59 0.50 11.99 99.00

Bergvik-3 0.57 0.19 0.48 1.53 100.00

Bergvik-4 0.50 0.26 0.61 0.93 100.00

	Element/product	Crude ore grade or quality
	FE	31.7 %
	FE_HEM	5 %
	FE_MAG	26 %
	S	.4 %

From - To	Activity	Comments
1906 - 1909	Regular production	Company/Institution :Svensk selskap, A/B Ofoten Malmfeldt
1906 - 1939	Core drilling
1913 - 1914	Regular production	Company/Institution :Engelsk selskap, Ofoten Malmfeldt
1917 - 1923	Regular production	Company/Institution :Tysk, Beer Sondheimer
1931 - 1935	Regular production	Company/Institution :Arbeiderselskapet
1936 - 1939	Regular production	Company/Institution :A/S Sydvaranger
1976 - 1976	Geology	Company/Institution :Rana Gruber
2012 - 2014	Geology	Company/Institution :NGU

Era:	Proterozoic	Period:	Neoproterozoic
Dating:		Method:
Genesis:	Sedex	Form:	Layer
Main texture:	Banded	Min. distribution:	Massive (>50 % ore minerals)

	Province:	Caledonides
	Geotec.unit:	Seve-Køli Nappe Complex
	Tectonic complex:	Øvre allokton
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Amphibole	Major mineral (>10%)
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Apatite	Accessory mineral (<1%)
Ore mineral	Magnetite	Major mineral (>10%)
Ore mineral	Hematite	Subordinate mineral (1-10%)
Ore mineral	Pyrite	Subordinate mineral (1-10%)

Relationship	Rock	Origin
Unknown	Karbonatgl.skifer	Extrusive Original rock :Basalt
		Metamorphic facies :Amphibolite

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Unknown	Fold axis	Strike/Dip :120 / 30	Syn-mineralisation ;...Effect :None

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
NO0277.01	Bedrock	1	31	2	21	8	.1	1.0
NO0277.02	Bedrock	2	34	3	13	7	.1	1.0
NO0277.03	Bedrock	216	42	2	50	28	1.0	14.0
NO0277.04	Bedrock	2	43	3	21	11	.1	5.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
NO0277.01	3.0	3.0	3	.3	7	1.00	2	7	.13
NO0277.02	3.0	3.0	2	.2	284	1.00	2	2	.01
NO0277.03	5.0	3.0	10	.3	12	1.00	2	2	15.35
NO0277.04	3.0	3.0	4	.6	52	1.00	2	2	.02

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
NO0277.01	34	19	607	30.15	2.00	5.00	1	51.0	3.00
NO0277.02	32	23	288	19.62	2.00	5.00	1	22.0	10.00
NO0277.03	30	22	549	20.54	4.00	5.00	2	39.0	21.00
NO0277.04	40	17	814	26.48	2.00	5.00	1	93.0	4.00

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
Bergvik-2	Bedrock	27.74	4.08	0.24	45.03	0.14	2.75	5.96
Bergvik-3	Bedrock	45.14	8.88	0.42	27.04	4.05	3.21	8.03
Bergvik-4	Bedrock	33.39	4.19	0.29	48.67	0.27	3.30	7.12

Sample No.	Na2O	K2O	P2O5	Loss	Sum
Bergvik-2	0.43	0.59	0.50	11.99	99.00
Bergvik-3	0.57	0.19	0.48	1.53	100.00
Bergvik-4	0.50	0.26	0.61	0.93	100.00