Norsk versjon
	THE ORE DATABASE
	Occurence 1806 - 002 Toppåsen
	(Object Id: 2135) (Last updated: 26.04.2020)

Products

	Element/product	Crude ore grade or quality	Reg. date
	Fe-mag.	25.1 %	04.01.1993
	Fe-total	34.9 %	04.01.1993
	MnO	1-7 %	04.01.1993
	P	0.35 %	04.01.1993
	S	0.004 %	04.01.1993

Operations

	From - To	Activity	Comments
	1899 - 1906	Test mining	Company/Institution :A/S Håfjellets jernfelter
	1935 - 1945	Geology	Company/Institution :NGU
	1976 - 1977	Geology	Company/Institution :Rana Gruber

Mineralization

	Era:	Proterozoic	Period:	Neoproterozoic
	Genesis:	Sedimentary deposit	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:	240 / 70	Direction:	260
			Plunge:	20

Stratigraphic classification of host rock

Era:

Proterozoic

Period:

Neoproterozoic

	Province:	Caledonides
	Geotec.unit:	Ofoten Nappe Complex
	Tectonic complex:	Upper allochthon
	Igneous complex:

Group:

Salangen group

Formation:

Håfjell jernformasjon

Mineralogy

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

Lithology:

	Relationship	Rock	Origin
	Unknown	Amphibolite	Intrusive Original rock :Gabbro
			Metamorphic facies :Amphibolite
	Unknown	Carbonate bearing mica schist	Sedimentary Original rock :Argillaceous sediment
			Metamorphic facies :Amphibolite
	Host rock	Silicious mica schist	Sedimentary Original rock :Greywacke
			Metamorphic facies :Amphibolite
	Wall rock	Calcite marble	Sedimentary Original rock :Limestone
			Metamorphic facies :Amphibolite

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Unknown	Primary layering	Strike/Dip :240 / 70	Syn-mineralisation ;...Effect :None
	Unknown	Fold axis	Strike/Dip :270 / 20	Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Forekomsten ligger i Toppåsen mellom gårdene Toppåsmoen (i dag Nordheim) og Skoglund, et 8-900 m langt drag inkl. omfoldingen. Råmalmgehalten er gitt på basis av et gjennomsnitt av fire prøver analysert og prøvetatt av Lindahl og Sørdal 1992. Toppåsen-forekomsten er sannsynligvis fortykket gjennom en isoklinalfold. Det har vært betydelig aktivitet på Toppåsen forekomsten som er en del av Håfjellets jernformasjon over Hestvikneset - Aspelund - Toppåsen - Underheia - Heia - Vassåsen. På Toppåsmoen er det drevet to stoller, en synk og flere dagstrosser, samt røsking av ca. 15 grøfter over utgående av malmen. i noen av grøftene er det gjort spregninger. Forekomsten ble befart og prøvetatt av T. Sørdal og I. Lindahl 04.09.92. Som grunnlag ved prøvetakingen ble Foslies kart over malmsonen brukt. Det ble tatt 4 prøver, tre fra strossene nærmest gården Skoglund (nordlige drag) og en prøve (4) fra det sørlige malmdraget (omfoldet).

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". NGU-Internrapp. og Rana Gruber.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	JSFE1404	Bedrock	Sampler: Jan Sverre Sandstad/...Stored: Løkken Comment: Hematite ore, fine grained No. of registrated element analyses = 1 No. of registrated oxide analyses = 1
	JSFE1405	Bedrock	Sampler: Jan Sverre Sandstad/...Stored: Løkken Comment: Hematite ore, fine grained, quartz-amphibole veinlets No. of registrated element analyses = 1 No. of registrated oxide analyses = 1
	NO0009.01	Bedrock	Sampler: Lindahl, I./...Stored: Løkken Comment: Skarn ore. No. of registrated element analyses = 1
	NO0009.02	Bedrock	Sampler: Lindahl, I./...Stored: Løkken Comment: Magnetite - hematite ore. No. of registrated element analyses = 1
	NO0009.03	Bedrock	Sampler: Lindahl, I./...Stored: Løkken Comment: Magnetite ore, coarse grained. No. of registrated element analyses = 1

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

Name of Locality: Toppåsen røsk

(Object Id: 6825 2,01,00)

Location

County:

Nordland

Municipality:

Narvik (1806)

Map 1:50000:

Skjomen (1331-1)

Map 1:250000:

Narvik

Coordinate system:

EU89-UTM Zone 33

East:

575851 m.

North:

7587269 m.

Longitude:

16.8455980

Latitude:

68.3880900

Show on map

Resource

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

Resources and production

	Activity:	Test mining	Reserves:	528 thousand tons
	Operating method:	Underground mining	Historical production:

Information(s) in free text format

Free text

Beliggenhet : 65-95 m.o.h. Tykkelse: 5 m Lengde: 320 m Anslått dybde langs malmfallet: 100 m. Tonnasje: 528 000 t

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	JSFE1403	Bedrock	Sampler: Jan Sverre Sandstad/...Stored: Løkken Comment: Hematite-quartz banded ore, 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.:

Name of Sample point: Skjerp

(Object Id: 4174 2,01,01)

Location

County:

Nordland

Municipality:

Narvik (1806)

Map 1:50000:

Skjomen (1331-1)

Map 1:250000:

Narvik

Coordinate system:

EU89-UTM Zone 33

East:

575807 m.

North:

7587253 m.

Longitude:

16.8445150

Latitude:

68.3879580

Show on map

Resource

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

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	NO0009.04	Bedrock	Sampler: Lindahl, I./...Stored: Løkken Comment: Magnetitt- hematittmalm. No. of registrated element analyses = 1

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

Name of Locality: Toppåsen stoll

(Object Id: 6826 2,02,00)

Location

County:

Nordland

Municipality:

Narvik (1806)

Map 1:50000:

Skjomen (1331-1)

Map 1:250000:

Narvik

Coordinate system:

EU89-UTM Zone 33

East:

575953 m.

North:

7587336 m.

Longitude:

16.8481410

Latitude:

68.3886560

Show on map

Resource

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

Resources and production

	Activity:	Test mining	Reserves:	792 thousand tons
	Operating method:	Underground mining	Historical production:

Information(s) in free text format

Free text

Beliggenhet: 75-100 m.o.h. Tykkelse: 4 m Lengde: 300 m Anslått dybde langs malmfallet: 200 m Tonnasje: 792 000 t

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	JSFE1401	Bedrock	Sampler: Jan Sverre Sandstad/...Stored: Løkken Comment: Hematite-magnetite-quartz-garnet banded ore No. of registrated element analyses = 1 No. of registrated oxide analyses = 1
	JSFE1402	Bedrock	Sampler: Jan Sverre Sandstad/...Stored: Løkken Comment: Hematite-magnetite-quartz-garnet banded ore No. of registrated element analyses = 1 No. of registrated oxide analyses = 1

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

Name of Locality: Heståsen strandmalm

(Object Id: 6827 2,03,00)

Location

County:

Nordland

Municipality:

Narvik (1806)

Map 1:50000:

Skjomen (1331-1)

Map 1:250000:

Narvik

Coordinate system:

EU89-UTM Zone 33

East:

576732 m.

North:

7587796 m.

Longitude:

16.8674240

Latitude:

68.3925730

Show on map

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

Hestvikåsen sørhelling: Beliggenhet: 0-70 m.o.h. Tykkelse: 2,5 m Lengde: 900 m Anslått dybde langs malmfallet: 200 m Tonnasje: 1485000 t Hestvikåsen topp: Beliggenhet: 0-40 m.o.h. Tykkelse: 2 m Lengde: 300 m Anslått dybde langs malmfallet: 100 m Tonnasje: 198000 t. Dette er det samme som Hestvikneset (Aspelund) forekomst. Draget går over Hestvikåsen.

Name of Locality: SØ for Asplund

(Object Id: 6828 2,04,00)

Location

County:

Nordland

Municipality:

Narvik (1806)

Map 1:50000:

Skjomen (1331-1)

Map 1:250000:

Narvik

Coordinate system:

EU89-UTM Zone 33

East:

576882 m.

North:

7587671 m.

Longitude:

16.8709790

Latitude:

68.3914120

Show on map

Resource

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

Information(s) in free text format

Free text

Beliggenhet: 0-45 m.o.h. Tykkelse: 3 m Lengde: 600 m Anslått dybde langs malmfallet: 200 m Tonnasje: 1188000 t.

---

Analyse Results

from

Deposit Area 1806 - 002 Toppåsen

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#
JSFE1401	Bedrock	1	20	5	133	62		107.8
JSFE1402	Bedrock	2	10	3	13	10		1.8
JSFE1403	Bedrock	1	14	2	69	9		10.1
JSFE1404	Bedrock	1	3	2	32	6		1.1
JSFE1405	Bedrock	1	3	8	68	4		11.4
NO0009.01	Bedrock	7	28	3	90	73	.6	9.0
NO0009.02	Bedrock	9	12	2	10	2	.1	19.0
NO0009.03	Bedrock	6	42	2	48	37	.2	8.0
NO0009.04	Bedrock	6	56	2	85	33	.2	114.0

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

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	Ga*
JSFE1401			14		16	0.30			15.20
JSFE1402			6		69	0.10			6.40
JSFE1403			10		21	0.20			10.50
JSFE1404			10		7	0.05			8.90
JSFE1405			13		18	0.20			10.90
NO0009.01	3.0	3.0	18	.8	11	1.00	2	11
NO0009.02	3.0	3.0	8	.2	34	1.00	2	2
NO0009.03	3.0	3.0	4	.6	71	1.00	2	2
NO0009.04	3.0	3.0	6	.2	25	1.00	3	2

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

Sample No.	S%	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Rb*
JSFE1401		45	3			3.00	0.30		1.7
JSFE1402		90	3			1.60	0.40		8.4
JSFE1403		47	3			2.10	0.20		0.6
JSFE1404		144	34			2.50	0.20		0.4
JSFE1405		39	14			5.70	0.20		0.6
NO0009.01	.01	13	12	17865	10.57	3.00	5.00	1
NO0009.02	.01	20	7	886	10.84	2.00	5.00	1
NO0009.03	.01	39	23	4691	23.54	3.00	5.00	1
NO0009.04	.01	28	14	6437	28.19	2.00	5.00	1

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

Sample No.	Sr*	Y*	Zr*	Nb*	Ta*	Cs*	La*	Ce*	Pr*
JSFE1401	395.8	34.1	63	4.70	0.40	0.20	16.00	31.30	4.16
JSFE1402	273.6	24.8	44	3.70	0.10	0.40	10.00	22.20	2.86
JSFE1403	120.3	45.8	50	6.80	0.30	0.05	10.00	26.10	2.96
JSFE1404	251.6	40.8	57	18.50	1.20	0.05	15.50	34.40	4.48
JSFE1405	726.9	8.8	96	4.80	0.20	0.05	30.30	59.30	6.58
NO0009.01	327.0						13.00
NO0009.02	87.0						9.00
NO0009.03	410.0						12.00
NO0009.04	166.0						9.00

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

Sample No.	Nd*	Sm*	Eu*	Gd*	Tb*	Dy*	Ho*	Er*	Tm*
JSFE1401	17.30	3.40	0.78	3.73	0.66	4.66	1.05	3.28	0.51
JSFE1402	13.00	2.70	0.66	2.89	0.50	3.28	0.79	2.40	0.37
JSFE1403	14.10	3.50	0.96	4.39	0.86	5.83	1.45	4.69	0.70
JSFE1404	19.50	3.73	0.78	3.87	0.65	4.90	1.30	4.18	0.65
JSFE1405	24.00	3.78	0.78	2.71	0.36	1.70	0.33	0.98	0.15
NO0009.01
NO0009.02
NO0009.03
NO0009.04

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

Sample No.	Yb*	Lu*	B*	Hf*
JSFE1401	3.58	0.64		1.30
JSFE1402	2.28	0.44		1.00
JSFE1403	4.49	0.81		1.20
JSFE1404	4.41	0.79		1.10
JSFE1405	1.01	0.18		2.20
NO0009.01			2
NO0009.02			2
NO0009.03			2
NO0009.04			2

Oxide analyses

( All values are in % )

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
JSFE1401	Bedrock	32.68	3.63	0.29	43.50	7.27	2.57	6.21
JSFE1402	Bedrock	39.62	2.03	0.16	43.35	1.27	1.80	5.35
JSFE1403	Bedrock	35.66	3.37	0.20	49.09	5.45	1.84	2.78
JSFE1404	Bedrock	7.61	1.49	0.81	82.00	1.91	1.18	2.82
JSFE1405	Bedrock	39.65	5.85	0.25	31.57	1.21	4.06	8.48

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

Sample No.	Na2O	K2O	P2O5	Loss	Sum
JSFE1401	0.09	0.04	0.64	2.21	99.00
JSFE1402	0.54	0.20	0.66	4.46	99.00
JSFE1403	0.12	0.02	0.60	0.22	99.00
JSFE1404	0.13	0.02	0.97	0.63	100.00
JSFE1405	3.89	0.08	0.36	4.39	100.00

---

The fact sheet was created on 30.04.2024

Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no

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