Fact Sheet for <b>Occurence 1806

					Norsk versjon
	THE ORE DATABASE
	Occurence 1806 - 037 Sjåfjell
	(Object Id: 2473) (Last updated: 01.03.2005)

Location

County:

Nordland

Municipality:

Narvik (1806)

Map 1:50000:

Evenes (1331-4)

Map 1:250000:

Narvik

Coordinate system:

EU89-UTM Zone 33

East:

572142 m.

North:

7575826 m.

Longitude:

16.7475310

Latitude:

68.2864750

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Resource

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

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Resources and production

	Activity:	Mining	Reserves:	400 thousand tons
	Operating method:	Underground mining	Historical production:	,4 thousand tons

Products

Element/product Crude ore grade or quality Reg. date

Fe-mag. 15.8 % 01.12.1992

Fe-total 23.1 % 01.12.1992

P 1.2 % 01.12.1992

Operations

From - To Activity Comments

1912 - 1912 Core drilling Company/Institution :A/S Bjørkåsen gruver

1918 - 1918 Core drilling Company/Institution : "

1976 - 1976 Geology Company/Institution :Rana Gruber A/S

Mineralization

Era: Proterozoic Period: Neoproterozoic

Genesis: Sedex Form: Ruler

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

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

Strike/Dip: 180 / 60 Direction: 335

Plunge: 35

Stratigraphic classification of host rock

Era: Proterozoic Period: Neoproterozoic

Province: Caledonides

Geotec.unit: Seve-Køli Nappe Complex

Tectonic complex:

Igneous complex:

Group: Narvikgruppen Formation: Karbonat-glimmerskifer

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Dolomite Subordinate mineral (1-10%)

Gangue mineral Calcite Subordinate mineral (1-10%)

Ore mineral Magnetite Major mineral (>10%)

Ore mineral Apatite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Unknown Karbonat-glimmersk. Sedimentary
Original rock :Argillaceous sediment

Metamorphic facies :Amphibolite

Structures

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

Unknown Fold axis Strike/Dip :180 / 35 Syn-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Sjåfjell fosfor-rik mt.-malmfelt ligger 230-250 m.o.h. 1-1.5 km sørvest for Børsvatnet. De tre største malmsteder (røsker, 2 stoller) har koordinater: UTM-øst - nord 572205 - 7576250 0,6 m malmbånd 572205 - 7576050 5-6 m malm, stoll 572200 - 7575900 25 m malmbredde i fold, stoll Sjåfjell-feltet inneholder 0,4 mill. t malm 50 m ned langs malmfallet og i 660 m strøklengde. Diamantboringen (4 hull, sum 503 m - derav 61 m i malm) viste i gjennomsnitt 23,1 % Fe-total som tilsvarer 15,8 % Fe-magn. og 21.8 vekt% magnetitt. Sjåfjell-horisonten består av 10-100 m tykk karbonatgl.sk. med 0,1-6 m tykk fosfor-rik magnetittmalm. Det er to hovedtyper fosfor-rik magnetittmineralisering: a) Rik magnetitt med cummingtonitt, aritm. middel av 14 håndprøver: 34,2 % Fe-total, 26,9 % Fe-magn., 1,46 % P og 0,025 % S. b) Magnetitt-impregnert karbonatglimmerskifer aritm. middel av 3 håndprøver: 17,5 % Fe-total, 11,2 % Fe-magn., 0,83 % P og 0,154 % S. Størrelsen på magnetittkornene målt i tynnslip er 0,02 - 0,2 mm. Modalsammensetningen er (vol%): Type a) Type b) --------------------------------------------------------- Magnetitt ~ 20 ~ 10 Apatitt 7 4 Kvarts 30-50 45 Kalkspat/dolomitt 0-3 15-20 Cummingtonitt 40 - Hornblende 0-15 5 Granat 0-15 Biotitt 2-15

Bibliography:

From NGU's Reference Archive:

Foslie, Steinar , 1949

Håfjellsmulden i Ofoten og dens sedimentære jern-mangan-malmer. Søndre Ofotens malmforekomster II.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.174;1-129 + f pages

Abstract:

The sedimentary hematite-magnetite ores of marine origin, occurring within the crystalline mica schists of the caledonian mountain of Northern Norway, belong to a characteristic type of iron ore deposits, internationally known as the Dunderland ore type. Such deposits are known from latitude 65 degrees 20' to 69 degrees 40' N, thus covering a distance along the mountain chain of about 550 km. Transversely to this direction, they are known for at most 90 km, but generally much less. It is significant, that they do not occur farther southwards along the mountain chain, nor in its eastern part. The reason seems to be, taht they are connected with the so-called western development or the mountain chain formations, which disappear below the ocean in the Trondheim district. Compared with the eastern development, it is characterized by greater thickness of the sedimentary series, a far more considerable part of crystalline limestones and - so faar as now known - absence of the basic lavas (greenstone formation), which are important in the east and south. It belongs to a more central part of the geosyncline. The southern and greater part of the ore-bearing district is so strongly folded, that it has been difficult to establish the stratigraphic relation between the different deposits or their proper place within the formations.

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

Søvegjarto, U. 1988: Manuskript angående jernmalmer i Norge (7 kapitler). Kapitlet om "Ofoten-Salangen province". Intern rapport NGU og Rana Gruber.

Fieldsamples

Sample No. Sample type Miscellanrous

NO0335.01 Bedrock

Sampler: Wilberg, R./...Stored: Løkken

Comment: Karbonatglimmerskifer med mt.diss.

No. of registrated element analyses = 1

NO0335.02 Bedrock

Sampler: Wilberg, R./...Stored: Løkken

Comment: Fink., båndet mt-malm.

No. of registrated element analyses = 1

NO0335.03 Bedrock

Sampler: Wilberg, R./...Stored: Løkken

Comment: Fink., båndet mt-malm.

No. of registrated element analyses = 1

NO0335.04 Bedrock

Sampler: Wilberg, R./...Stored: Løkken

Comment: Fink., båndet mt-malm.

No. of registrated element analyses = 1

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

Name of Locality: Skjerp 1

(Object Id: 6866 37,01,00)

Location

County: Nordland Municipality: Narvik (1806)

Map 1:50000: Evenes (1331-4) Map 1:250000: Narvik

Coordinate system: EU89-UTM Zone 33

East: 572137 m. North: 7576046 m.

Longitude: 16.7475610 Latitude: 68.2884480

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Resource

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

Element(s): Fe

Resources and production

Activity: Pitting Reserves:

Operating method: Historical production:

Information(s) in free text format

Free text

0,6 m malmbånd.

Name of Locality: Skjerp 2

(Object Id: 6867 37,02,00)

Location

County: Nordland Municipality: Narvik (1806)

Map 1:50000: Evenes (1331-4) Map 1:250000: Narvik

Coordinate system: EU89-UTM Zone 33

East: 572137 m. North: 7575846 m.

Longitude: 16.7474240 Latitude: 68.2866560

Show on map

Resource

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

Element(s): Fe

Resources and production

Activity: Mining Reserves:

Operating method: Underground mining Historical production:

Information(s) in free text format

Description

5-6 m malm. Stoll.

Name of Locality: Skjerp S

(Object Id: 39473 37,03,00)

Location

County: Nordland Municipality: Narvik (1806)

Map 1:50000: Evenes (1331-4) Map 1:250000: Narvik

Coordinate system: EU89-UTM Zone 33

East: 572163 m. North: 7575669 m.

Longitude: 16.7479330 Latitude: 68.2850580

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Resource

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

Element(s): Fe

Fieldsamples

Sample No. Sample type Miscellanrous

14-15 Dump

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

Comment: Kvarts-og amfibolbåndet magnetittmineralisering

No. of registrated oxide analyses = 1

14-16 Dump

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

Comment: Kvarts-og amfibolbåndet magnetittmineralisering

No. of registrated oxide analyses = 1

14-17 Dump

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

Comment: Kvarts-og amfibolbåndet magnetittmineralisering

No. of registrated oxide analyses = 1

14-18 Dump

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

Comment: Kvarts-og amfibolbåndet magnetittmineralisering

No. of registrated oxide analyses = 1

14-19 Dump

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

Comment: Kvarts-og amfibolbåndet magnetittmineralisering

No. of registrated oxide analyses = 1

14-20 Dump

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

Comment: Granat-gruneritt med magnetittdisseminasjon

No. of registrated oxide analyses = 1

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

Name of Locality: Sjåfjell Vestsone

(Object Id: 39474 37,04,00)

Location

County: Nordland Municipality: Narvik (1806)

Map 1:50000: Evenes (1331-4) Map 1:250000: Narvik

Coordinate system: EU89-UTM Zone 33

East: 572055 m. North: 7575947 m.

Longitude: 16.7455100 Latitude: 68.2875860

Show on map

Resource

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

Element(s): Fe

Fieldsamples

Sample No. Sample type Miscellanrous

14-21 Bedrock

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

Comment: Kvarts-og amfibolbåndet magnetittmineralisering

No. of registrated oxide analyses = 1

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

Analyse Results

from

Deposit Area 1806 - 037 Sjåfjell

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#

NO0335.01 Bedrock 45 3 9 2 54 -.3 -2.0

NO0335.02 Bedrock 13 1 6 -1 26 -.3 -2.0

NO0335.03 Bedrock 7 2 11 -1 12 -.3 -2.0

NO0335.04 Bedrock 12 5 4 -1 16 -.3 -2.0

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

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

NO0335.01 -3.0 -3.0 -5.0 6 .2 5 1.00 -2 -2

NO0335.02 -3.0 -3.0 -5.0 11 -.2 8 3.00 -2 -2

NO0335.03 -3.0 -3.0 -5.0 8 -.2 5 -1.00 -2 -2

NO0335.04 -3.0 -3.0 -5.0 12 .3 3 1.00 -2 -2

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

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

NO0335.01 .02 67 31 215 17.07 3.00 -5.00 2 137.0

NO0335.02 .05 20 7 135 28.64 2.00 -5.00 -2 142.0

NO0335.03 .07 14 5 468 24.02 -2.00 -5.00 -2 297.0

NO0335.04 -.01 15 7 601 29.79 -2.00 -5.00 -2 242.0

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

Sample No. La* B*

NO0335.01 13.00 -3

NO0335.02 3.00 -3

NO0335.03 1.00 -3

NO0335.04 3.00 -3

Oxide analyses
( All values are in % )

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

14-15 Dump 30.32 0.42 0.04 59.48 0.09 2.32 5.13

14-16 Dump 36.41 3.58 0.32 45.63 0.08 3.43 5.27

14-17 Dump 44.67 0.60 0.07 44.46 0.11 2.24 3.83

14-18 Dump 30.22 3.41 0.26 42.65 0.07 2.90 9.56

14-19 Dump 32.34 0.29 0.03 46.02 0.12 1.68 9.74

14-20 Dump 38.00 6.38 0.45 44.33 0.14 3.76 5.15

14-21 Bedrock 38.05 1.10 0.12 45.21 0.08 2.35 7.25

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

Sample No. Na2O K2O P2O5 Loss Sum

14-15 -0.01 0.04 2.97 -0.06 101.00

14-16 0.63 0.49 2.10 1.14 99.00

14-17 0.07 0.07 1.33 1.89 99.00

14-18 0.67 0.49 3.19 6.07 99.00

14-19 -0.01 -0.01 2.25 7.09 100.00

14-20 -0.01 0.25 2.44 -1.18 100.00

14-21 0.35 -0.01 4.31 0.90 100.00

Element/product	Crude ore grade or quality	Reg. date
Fe-mag.	15.8 %	01.12.1992
Fe-total	23.1 %	01.12.1992
P	1.2 %	01.12.1992

From - To	Activity	Comments
1912 - 1912	Core drilling	Company/Institution :A/S Bjørkåsen gruver
1918 - 1918	Core drilling	Company/Institution : "
1976 - 1976	Geology	Company/Institution :Rana Gruber A/S

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

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

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

Relationship	Rock	Origin
Unknown	Karbonat-glimmersk.	Sedimentary Original rock :Argillaceous sediment
		Metamorphic facies :Amphibolite

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Unknown	Fold axis	Strike/Dip :180 / 35	Syn-mineralisation ;...Effect :None

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
NO0335.01	Bedrock	45	3	9	2	54	-.3	-2.0
NO0335.02	Bedrock	13	1	6	-1	26	-.3	-2.0
NO0335.03	Bedrock	7	2	11	-1	12	-.3	-2.0
NO0335.04	Bedrock	12	5	4	-1	16	-.3	-2.0

Sample No.	Pt#	Pd#	Rh#	As*	Cd*	Ba*	Mo*	Sb*	Bi*
NO0335.01	-3.0	-3.0	-5.0	6	.2	5	1.00	-2	-2
NO0335.02	-3.0	-3.0	-5.0	11	-.2	8	3.00	-2	-2
NO0335.03	-3.0	-3.0	-5.0	8	-.2	5	-1.00	-2	-2
NO0335.04	-3.0	-3.0	-5.0	12	.3	3	1.00	-2	-2

Sample No.	S%	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*
NO0335.01	.02	67	31	215	17.07	3.00	-5.00	2	137.0
NO0335.02	.05	20	7	135	28.64	2.00	-5.00	-2	142.0
NO0335.03	.07	14	5	468	24.02	-2.00	-5.00	-2	297.0
NO0335.04	-.01	15	7	601	29.79	-2.00	-5.00	-2	242.0

Sample No.	La*	B*
NO0335.01	13.00	-3
NO0335.02	3.00	-3
NO0335.03	1.00	-3
NO0335.04	3.00	-3

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
14-15	Dump	30.32	0.42	0.04	59.48	0.09	2.32	5.13
14-16	Dump	36.41	3.58	0.32	45.63	0.08	3.43	5.27
14-17	Dump	44.67	0.60	0.07	44.46	0.11	2.24	3.83
14-18	Dump	30.22	3.41	0.26	42.65	0.07	2.90	9.56
14-19	Dump	32.34	0.29	0.03	46.02	0.12	1.68	9.74
14-20	Dump	38.00	6.38	0.45	44.33	0.14	3.76	5.15
14-21	Bedrock	38.05	1.10	0.12	45.21	0.08	2.35	7.25

Sample No.	Na2O	K2O	P2O5	Loss	Sum
14-15	-0.01	0.04	2.97	-0.06	101.00
14-16	0.63	0.49	2.10	1.14	99.00
14-17	0.07	0.07	1.33	1.89	99.00
14-18	0.67	0.49	3.19	6.07	99.00
14-19	-0.01	-0.01	2.25	7.09	100.00
14-20	-0.01	0.25	2.44	-1.18	100.00
14-21	0.35	-0.01	4.31	0.90	100.00