Fact Sheet for <b>Occurence 1853

					Norsk versjon
	THE ORE DATABASE
	Occurence 1853 - 007 Gorsajoka
	(Object Id: 2411) (Last updated: 07.02.2024)

Location

County:

Nordland

Municipality:

Evenes (1853)

Map 1:50000:

Astafjorden (1332-2)

Map 1:250000:

Narvik

Coordinate system:

EU89-UTM Zone 33

East:

588682 m.

North:

7604246 m.

Longitude:

17.1721190

Latitude:

68.5365040

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Resource

	Resource Type:	Ferrous metals(Fe, Mn, Ti)	Resource Subtype:	Iron
			Element(s):	Fe P

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Resources and production

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Products

Element/product Crude ore grade or quality Reg. date

Fe 20 % 25.09.1992

P .4 % 25.09.1992

Operations

From - To Activity Comments

1920 - 1925 Pitting

1976 - 1977 Geology Company/Institution :Rana Gruber

Mineralization

Era: Proterozoic Period: Neoproterozoic

Genesis: Sedex Form: Layer

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

Main grain size: Fine grained (< 1 mm) Main alteration:

Strike/Dip: 220 / 30 Direction: 290

Plunge: 30

Stratigraphic classification of host rock

Era: Proterozoic Period: Neoproterozoic

Province: Caledonides

Geotec.unit: Ofoten Nappe Complex

Tectonic complex: Øvre allokton

Igneous complex:

Group: Bogengruppen Formation: Håfjell jernformasjon

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Ore mineral Magnetite Major mineral (>10%)

Ore mineral Apatite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Unknown Karbonatglimmersk. Sedimentary
Original rock :Argillaceous sediment

Metamorphic facies :Amphibolite

Structures

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

Unknown Primary layering Strike/Dip :220 / 30 Syn-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Gorsjoka finkornet magnetittmalm, tildels fosforrik. Draget kan følges fra Gorsjoka i NØ 1km SV-over som flere opptil 0.5-2m tykke malmlaglinser. Største malmskjæring er 6m tykk (Svartberget 500m SV for Gorsjoka). Ellers opptrer flere 0.1-0.5m tykke malmbånd. Det er 10 røskegrøfter fra 1920 årene i det 1km lange draget. De 3 hovedmalmstedene er: Gorsjoka 405 m.o.h. UTM 589050-7604900 Svartberget 350 m.o.h. UTM 588750-7604450 Kvigelva 280 m.o.h. UTM 588550-7604150 Tonnasjen er: Tykkelse Lengde Dyp langs malmfall Tonnasje Gorsjoka 2m 100m 50m 32.000 Svartberget NØ 2m 100m 50m 32.000 Svartberget skjerp 6m 70m 50m 67.200 Kvigelva NØ 2m 100m 50m 32.000 Kvigelva SV 2m 100m 50m 32.000 ----------------------------------------------------------------------------------------- Samlet tonnasje: 195.200 8 prøver analysert ved Norsk Jernverk 1977: Fe tot. Fe magn. MnO TiO2 P S Gorsjoka bekk 34.5 31.4 0.86 0.03 Svartberget 24.5 19.1 0.06 0.46 0.684 0.22 200m SV for Svartberget 26.0 23.6 0.44 0.34 0.219 0.004 90m NØ for Kvigelva 34.4 31.1 0.76 0.23 0.211 0.006 90m NØ for Kvigelva 29.7 25.7 0.05 0.26 0.249 0.009 Kvigelva nordsida 29.6 25.4 0.12 0.37 0.200 0.004 Kvigelva sørsida 16.7 9.2 0.09 0.70 0.155 0.004 Kvigelva sørsida 21.2 15.4 0.06 0.38 0.540 0.012 ----------------------------------------------------------------------------------------------- 0.20 Aritmetrisk middel: 27.0 22.6 0.22 0.39 0.70 0.036

Bibliography:

From NGU's Reference Archive:

Johansson, J. A. , 1914

Om Astafjordens, JÌgteviks och StrÎmbottens jÌrnamlmsfelt paa AndorgÎn.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 4137;1 pages

Abstract:

Andørja er oppbygd av glimmerskifer med innleiringer av kalkstein og jernmalmer. Lagstillingen er stort sett flatt heldende mot SØ, men varierer noe. Skiferen er her og der gjennombrutt av granitt og pegmatitt. Jernmalm forekommer i tre nivåer. Det mellomste ligger 400 - 500 m over det undre i lagfølgen. Den mellomste malmformasjonen er uten sammenlikning den viktigste. Til den hører Asta, Jektvik og Strømbotn feltene. Malmen forekommer i opptil 20 - 30 m mektighet ( iberegnet mindre gråbergs innleiringer). Malmen består for største delen av en finkornet blanding av magnetitt og kvarts ved siden av endel granat og hornblende. Denne varietet holder vanlig 30-35 % Fe (total), 1 - 1,5% P og 0,1 - 0,3% S. I en mindre del av malmen inngår hornblende i overveiende mengde, mens jerngehalten er 20 - 25% eller lavere. Enkelte steder kan en se at malmleiene er tykkere, andre steder kiler de ut. Da hele området utgjør en 20 - 30 km2, er det tydelig at malmkvantitetene er store, selv om man regner med at bare halve arealet er verd å bryte. Malmen vil kunne brytes dels i dagbrudd dels i horisontale strosser.

Poulsen, A.O. , 1952

Mineralforekomster i Astafjord.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1872;2 pages

Abstract:

Flere malm og mineralforekomster er befart, og dette er en foreløpig rapport fra befaringene, Kalkstein, grafitt, sink (v/Niingvann) jernmalm- forekomster blir omtalt.

Fieldsamples

Sample No. Sample type Miscellanrous

NO0269.01 Bedrock

Sampler: Sørdal, T./...Stored: Løkken

Comment: Rusten fattig malm, lite magnetisk. (Fosforholdig)?

No. of registrated element analyses = 1

NO0269.02 Bedrock

Sampler: Sørdal, T./...Stored: Løkken

Comment: Magnetittmalm, fattig.

No. of registrated element analyses = 1

N-29 Bedrock

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

Comment: quartz-amphibole banded magnetite

No. of registrated oxide analyses = 1

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

Name of Sample point: Tverrelva

(Object Id: 39448 7,00,01)

Location

County: Nordland Municipality: Evenes (1853)

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

Coordinate system: EU89-UTM Zone 33

East: 588244 m. North: 7603686 m.

Longitude: 17.1608970 Latitude: 68.5316210

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Resource

Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron

Element(s): Fe P

Fieldsamples

Sample No. Sample type Miscellanrous

14-3 Bedrock

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

Comment: Kalkholdig glimmerskifer m disseminert magnetitt

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: 39477 7,00,02)

Location

County: Nordland Municipality: Evenes (1853)

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

Coordinate system: EU89-UTM Zone 33

East: 588555 m. North: 7604031 m.

Longitude: 17.1688040 Latitude: 68.5346230

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Resource

Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron

Element(s): Fe P

Fieldsamples

Sample No. Sample type Miscellanrous

N-28 Bedrock

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

Comment: magnetite-bearing mica chist

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: 39478 7,00,03)

Location

County: Nordland Municipality: Evenes (1853)

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

Coordinate system: EU89-UTM Zone 33

East: 588656 m. North: 7603972 m.

Longitude: 17.1712240 Latitude: 68.5340540

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Resource

Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron

Element(s): Fe P

Fieldsamples

Sample No. Sample type Miscellanrous

N-27 Bedrock

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

Comment: magnetite-bearing calc. Schist

No. of registrated oxide analyses = 1

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

Name of Locality: Svartberget

(Object Id: 3130 7,01,00)

Location

County: Nordland Municipality: Evenes (1853)

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

Coordinate system: EU89-UTM Zone 33

East: 588682 m. North: 7604246 m.

Longitude: 17.1721190 Latitude: 68.5365040

Show on map

Resource

Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron

Element(s): Fe P

Resources and production

Activity: Pitting Reserves:

Operating method: Historical production:

Information(s) in free text format

Description

Anomali med 6 m mektighet og 70 m lengde.

Name of Locality: Kvigelva

(Object Id: 3131 7,02,00)

Location

County: Nordland Municipality: Evenes (1853)

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

Coordinate system: EU89-UTM Zone 33

East: 588482 m. North: 7603946 m.

Longitude: 17.1669650 Latitude: 68.5338790

Show on map

Resource

Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron

Element(s): Fe P

Resources and production

Activity: Pitting Reserves:

Operating method: Historical production:

Information(s) in free text format

Description

Anomali med 2 m mektighet og 100 m lengde.

Fieldsamples

Sample No. Sample type Miscellanrous

N-30 Bedrock

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

Comment: garnet-amphibole-magnetite

No. of registrated oxide analyses = 1

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

Analyse Results

from

Deposit Area 1853 - 007 Gorsajoka

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#

NO0269.01 Bedrock 46 75 7 24 50 .1 2.0

NO0269.02 Bedrock 33 72 2 18 34 .1 2.0

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

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

NO0269.01 3.0 3.0 2 .2 63 1.00 2 5 .93

NO0269.02 3.0 3.0 4 .2 153 1.00 2 3 .02

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

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

NO0269.01 20 23 121 3.16 15.00 8.00 2 7.0 12.00

NO0269.02 42 35 470 5.87 6.00 5.00 2 18.0 21.00

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

Sample No. B*

NO0269.01 6

NO0269.02 2

Oxide analyses
( All values are in % )

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

N-27 Bedrock 57.64 13.56 0.87 11.96 0.08 3.56 4.89

N-28 Bedrock 60.07 11.51 0.78 13.74 0.11 2.77 4.84

N-29 Bedrock 47.39 6.02 0.43 31.54 0.08 2.62 6.40

N-30 Bedrock 49.84 7.55 0.59 23.43 0.08 4.00 7.06

14-3 Bedrock 60.57 9.73 0.66 11.69 0.10 3.40 5.04

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

Sample No. Na2O K2O P2O5 Loss Sum

N-27 1.35 3.29 0.38 2.81 100.00

N-28 1.37 2.15 0.47 2.88 101.00

N-29 0.87 0.52 1.55 2.36 100.00

N-30 0.93 1.32 1.06 3.97 100.00

14-3 1.36 1.98 0.44 4.61 100.00

Element/product	Crude ore grade or quality	Reg. date
Fe	20 %	25.09.1992
P	.4 %	25.09.1992

From - To	Activity	Comments
1920 - 1925	Pitting
1976 - 1977	Geology	Company/Institution :Rana Gruber

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

	Province:	Caledonides
	Geotec.unit:	Ofoten Nappe Complex
	Tectonic complex:	Øvre allokton
	Igneous complex:

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

Relationship	Rock	Origin
Unknown	Karbonatglimmersk.	Sedimentary Original rock :Argillaceous sediment
		Metamorphic facies :Amphibolite

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Unknown	Primary layering	Strike/Dip :220 / 30	Syn-mineralisation ;...Effect :None

	Abstract:
	Flere malm og mineralforekomster er befart, og dette er en foreløpig rapport fra befaringene, Kalkstein, grafitt, sink (v/Niingvann) jernmalm- forekomster blir omtalt.

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
NO0269.01	Bedrock	46	75	7	24	50	.1	2.0
NO0269.02	Bedrock	33	72	2	18	34	.1	2.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
NO0269.01	3.0	3.0	2	.2	63	1.00	2	5	.93
NO0269.02	3.0	3.0	4	.2	153	1.00	2	3	.02

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
NO0269.01	20	23	121	3.16	15.00	8.00	2	7.0	12.00
NO0269.02	42	35	470	5.87	6.00	5.00	2	18.0	21.00

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
N-27	Bedrock	57.64	13.56	0.87	11.96	0.08	3.56	4.89
N-28	Bedrock	60.07	11.51	0.78	13.74	0.11	2.77	4.84
N-29	Bedrock	47.39	6.02	0.43	31.54	0.08	2.62	6.40
N-30	Bedrock	49.84	7.55	0.59	23.43	0.08	4.00	7.06
14-3	Bedrock	60.57	9.73	0.66	11.69	0.10	3.40	5.04

Sample No.	Na2O	K2O	P2O5	Loss	Sum
N-27	1.35	3.29	0.38	2.81	100.00
N-28	1.37	2.15	0.47	2.88	101.00
N-29	0.87	0.52	1.55	2.36	100.00
N-30	0.93	1.32	1.06	3.97	100.00
14-3	1.36	1.98	0.44	4.61	100.00