Fact Sheet for <b>Occurence 1806

					Norsk versjon
	THE ORE DATABASE
	Occurence 1806 - 053 Heia
	(Object Id: 2493) (Last updated: 26.04.2020)

Location

County:

Nordland

Municipality:

Narvik (1806)

Map 1:50000:

Skjomen (1331-1)

Map 1:250000:

Narvik

Coordinate system:

EU89-UTM Zone 33

East:

574824 m.

North:

7586832 m.

Longitude:

16.8203150

Latitude:

68.3844480

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Resource

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

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Resources and production

	Activity:	Exploration	Reserves:	1000 thousand tons
	Operating method:	Underground mining	Historical production:

Products

Element/product Crude ore grade or quality Reg. date

Fe-mag. 13.8 % 04.01.1993

Fe-total 23.9 % 04.01.1993

MnO 3 % 04.01.1993

P 0.48 % 04.01.1993

S 0.013 % 04.01.1993

Operations

From - To Activity Comments

1899 - 1906 Pitting 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 / 60 Direction: 270

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 iron formation

Mineralogy

Relationship Mineral Amount

Gangue mineral Garnet Major mineral (>10%)

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Epidote Subordinate mineral (1-10%)

Gangue mineral Amphibole Subordinate mineral (1-10%)

Gangue mineral Apatite Subordinate mineral (1-10%)

Ore mineral Hematite Major mineral (>10%)

Ore mineral Magnetite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock 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 Fold axis Strike/Dip :270 / 20 Post-mineralisation ;...Effect :Modifies

Unknown Primary layering Strike/Dip :270 / 60 Syn-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Forekomsten er et langt drag fra Underheia i ØNØ til Heia i VSV. Betegnelsene underheia og Heia er brukt på grunn av høydefoerskjell over havet (100 m). Utgående lang Heia og Underheia er over en strekning på 1 km som er skjerpet opp med omtrent 90 grøfter og skjerp hvor det er utført spregning. Malmtypen er som Håfjellets jernformasjon med båndet mt-malm og hem-malm ofte med Mn rike granater. Malmsonen kan følges meter fr meter fra Toppåsen via Underheia - Heia og til Vassåsen. På Toppåsen er malmen splittet opp med folding/utkiling i en sørlig og en nordlig malmsone. Over Underheia og Heia er det den nordlige av Toppåsen sonene som er den viktigste. 20 - 30 meter over denne sonen ligger den malmsonen som er viktigst i Vassåsen. Mektigheten på de to malmlagene er opptil 5 meter. Jernformasjonen ligger i variert glimmerskifer omgitt av kalkmarmor. Det henvises til Foslie (1949). Det ble ikke tatt noen prøver fra Heia ved registreringen. Dette ble derimot gjort på Toppåsen og i Vassåsen. Forekomsten ligger i bjørkekledt frodig område, men er lett tilgjengelig fra skogsbilvei og skogsvei. Råmalmgehalten er basert på en analyse fra Rana Gruber.

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.

Fieldsamples

Sample No. Sample type Miscellanrous

JSFE1410 Bedrock

Sampler: Jan Sverre Sandstad/...Stored: Løkken

Comment: Hematite-magnetite-quartz-garnet banded ore, fine grained

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

NO0355.01 Bedrock

Sampler: Lindahl, I./...Stored: Løkken

Comment: Hematite ore top Vassåsen level

No. of registrated element analyses = 1

NO0355.02 Bedrock

Sampler: Lindahl, I./...Stored: Løkken

Comment: Skarn ore thin band.

No. of registrated element analyses = 1

NO0355.03 Bedrock

Sampler: Lindahl, I./...Stored: Løkken

Comment: Skarn ore from 2 m thick band.

No. of registrated element analyses = 1

NO0355.04 Bedrock

Sampler: Lindahl, I./...Stored: Løkken

Comment: Banded 2m thick hematite ore.

No. of registrated element analyses = 1

NO0355.05 Bedrock

Sampler: Lindahl, I./...Stored: Løkken

Comment: Chip samples of ore from the Heia level in Vassåsen.

No. of registrated element analyses = 1

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

Name of Locality: Heia røsk

(Object Id: 36464 53,01,00)

Location

County: Nordland Municipality: Narvik (1806)

Map 1:50000: Skjomen (1331-1) Map 1:250000: Narvik

Coordinate system: EU89-UTM Zone 33

East: 574889 m. North: 7586851 m.

Longitude: 16.8218990 Latitude: 68.3845930

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Resource

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

Element(s): Fe Mn

Resources and production

Activity: Exploration Reserves:

Operating method: Open pit mining Historical production:

Fieldsamples

Sample No. Sample type Miscellanrous

JSFE1411 Bedrock

Sampler: Jan Sverre Sandstad/...Stored: Løkken

Comment: Magnetite-hematite-quartz-garnet 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.:

Analyse Results

from

Deposit Area 1806 - 053 Heia

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#

JSFE1410 Bedrock 2 22 6 227 65 2.6

JSFE1411 Bedrock 4 18 5 237 317 9.4

NO0355.01 Bedrock 3 41 24 90 62 1.1 1.0

NO0355.02 Bedrock 4 22 21 29 12 .4 40.0

NO0355.03 Bedrock 26 48 6 82 37 .5 6.0

NO0355.04 Bedrock 4 30 19 27 9 .1 1.0

NO0355.05 Bedrock 3 39 20 84 48 1.5 1.0

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

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

JSFE1410 13 20 0.40 23.40

JSFE1411 6 14 0.30 30.20

NO0355.01 3.0 3.0 9 .2 71 1.00 2 3

NO0355.02 3.0 3.0 9 .5 26 1.00 2 5

NO0355.03 3.0 3.0 7 .4 150 1.00 2 2

NO0355.04 3.0 3.0 6 .2 9 1.00 2 8

NO0355.05 3.0 3.0 27 .4 17 1.00 2 2

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

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

JSFE1410 35 21 3.10 0.10 0.6

JSFE1411 19 3 3.60 0.20 3.4

NO0355.01 .01 5 8 45047 10.77 2.00 5.00 1

NO0355.02 .01 2 8 24399 6.86 2.00 5.00 1

NO0355.03 .02 4 8 21860 10.78 2.00 5.00 1

NO0355.04 .01 4 11 22758 9.05 3.00 5.00 1

NO0355.05 .01 2 8 46621 6.33 2.00 5.00 1

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

Sample No. Sr* Y* Zr* Nb* Ta* Cs* La* Ce* Pr*

JSFE1410 343.3 31.5 80 8.10 0.40 0.05 16.20 29.60 3.86

JSFE1411 144.9 34.0 166 2.70 0.20 0.20 15.20 30.60 3.73

NO0355.01 229.0 7.00

NO0355.02 523.0 9.00

NO0355.03 493.0 13.00

NO0355.04 200.0 25.00

NO0355.05 328.0 6.00

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

Sample No. Nd* Sm* Eu* Gd* Tb* Dy* Ho* Er* Tm*

JSFE1410 14.90 3.67 1.01 4.57 0.78 4.74 1.03 3.09 0.52

JSFE1411 12.80 3.37 1.09 6.06 1.06 6.41 1.18 3.36 0.50

NO0355.01

NO0355.02

NO0355.03

NO0355.04

NO0355.05

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

Sample No. Yb* Lu* B* Hf*

JSFE1410 3.46 0.55 2.00

JSFE1411 3.57 0.50 4.40

NO0355.01 2

NO0355.02 2

NO0355.03 2

NO0355.04 2

NO0355.05 2

Oxide analyses
( All values are in % )

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

JSFE1410 Bedrock 35.20 6.97 0.56 33.08 13.33 2.58 6.13

JSFE1411 Bedrock 46.86 13.10 0.38 10.13 20.39 1.87 5.14

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

Sample No. Na2O K2O P2O5 Loss Sum

JSFE1410 0.17 0.01 0.52 2.22 101.00

JSFE1411 0.01 0.05 0.01 2.61 101.00

Element/product	Crude ore grade or quality	Reg. date
Fe-mag.	13.8 %	04.01.1993
Fe-total	23.9 %	04.01.1993
MnO	3 %	04.01.1993
P	0.48 %	04.01.1993
S	0.013 %	04.01.1993

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

Era:	Proterozoic	Period:	Neoproterozoic
Genesis:	Sedimentary deposit	Form:	Layer
Main texture:	Banded	Min. distribution:	Semi-massive (20-50 % ore minerals)

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

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

Relationship	Rock	Origin
Host rock	Mica schist	Sedimentary Original rock :Greywacke
		Metamorphic facies :Amphibolite
Wall rock	Calcite marble	Sedimentary Original rock :Limestone
		Metamorphic facies :Amphibolite

Location:	Type:	Orientation(360 gr.):	Relation to min.:
Unknown	Fold axis	Strike/Dip :270 / 20	Post-mineralisation ;...Effect :Modifies
Unknown	Primary layering	Strike/Dip :270 / 60	Syn-mineralisation ;...Effect :None

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JSFE1410	Bedrock	2	22	6	227	65		2.6
JSFE1411	Bedrock	4	18	5	237	317		9.4
NO0355.01	Bedrock	3	41	24	90	62	1.1	1.0
NO0355.02	Bedrock	4	22	21	29	12	.4	40.0
NO0355.03	Bedrock	26	48	6	82	37	.5	6.0
NO0355.04	Bedrock	4	30	19	27	9	.1	1.0
NO0355.05	Bedrock	3	39	20	84	48	1.5	1.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	Ga*
JSFE1410			13		20	0.40			23.40
JSFE1411			6		14	0.30			30.20
NO0355.01	3.0	3.0	9	.2	71	1.00	2	3
NO0355.02	3.0	3.0	9	.5	26	1.00	2	5
NO0355.03	3.0	3.0	7	.4	150	1.00	2	2
NO0355.04	3.0	3.0	6	.2	9	1.00	2	8
NO0355.05	3.0	3.0	27	.4	17	1.00	2	2

Sample No.	S%	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Rb*
JSFE1410		35	21			3.10	0.10		0.6
JSFE1411		19	3			3.60	0.20		3.4
NO0355.01	.01	5	8	45047	10.77	2.00	5.00	1
NO0355.02	.01	2	8	24399	6.86	2.00	5.00	1
NO0355.03	.02	4	8	21860	10.78	2.00	5.00	1
NO0355.04	.01	4	11	22758	9.05	3.00	5.00	1
NO0355.05	.01	2	8	46621	6.33	2.00	5.00	1

Sample No.	Sr*	Y*	Zr*	Nb*	Ta*	Cs*	La*	Ce*	Pr*
JSFE1410	343.3	31.5	80	8.10	0.40	0.05	16.20	29.60	3.86
JSFE1411	144.9	34.0	166	2.70	0.20	0.20	15.20	30.60	3.73
NO0355.01	229.0						7.00
NO0355.02	523.0						9.00
NO0355.03	493.0						13.00
NO0355.04	200.0						25.00
NO0355.05	328.0						6.00

Sample No.	Nd*	Sm*	Eu*	Gd*	Tb*	Dy*	Ho*	Er*	Tm*
JSFE1410	14.90	3.67	1.01	4.57	0.78	4.74	1.03	3.09	0.52
JSFE1411	12.80	3.37	1.09	6.06	1.06	6.41	1.18	3.36	0.50
NO0355.01
NO0355.02
NO0355.03
NO0355.04
NO0355.05

Sample No.	Yb*	Lu*	B*	Hf*
JSFE1410	3.46	0.55		2.00
JSFE1411	3.57	0.50		4.40
NO0355.01			2
NO0355.02			2
NO0355.03			2
NO0355.04			2
NO0355.05			2

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
JSFE1410	Bedrock	35.20	6.97	0.56	33.08	13.33	2.58	6.13
JSFE1411	Bedrock	46.86	13.10	0.38	10.13	20.39	1.87	5.14

Sample No.	Na2O	K2O	P2O5	Loss	Sum
JSFE1410	0.17	0.01	0.52	2.22	101.00
JSFE1411	0.01	0.05	0.01	2.61	101.00