Fact Sheet for Deposit Area 1920

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 1920 - 001
	(Last updated 26.apr.2020)

Name of Deposit Area : Lotternes

(Object Id : 1920,001,00,00)

Location

County :

Troms (19)

Municipality :

Lavangen (1920)

Map 1:50000:

Gratangen (1432-3)

Map 1:250000:

Narvik

Marking point:

Longitude:

17.6383090

Latitude:

68.7467590

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-coord:

606702 m.

Y-coord:

7628415 m.

Commodity

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

Production

Activity:	Pitting	Reserves:	7900 thousand tons
Prod. method:		Production:
Prod. status:		Volume of dump:

Importance

Public: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 18.feb.2005 by Peter Ihlen)

Products

Element/product Crude ore grade or quality

FE_MAG 15 %

FE_TOT 21.1 %

P 0.73 %

S 0.307 %

Operations

From - To Activity Comments

1910 - 1916 Pitting

1916 - 1916 Core drilling

1978 - 1978 Geology Company/Institution :Rana Gruber A/S

Mineralization

Era: Proterozoic Period: Neoproterozoic

Dating: Method:

Genesis: Sedex Form: Layer

Main texture: Banded Min. distribution: Disseminated (<20 % ore minerals)

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

Strike/Dip: 180 / 15 Direction: 270

Plunge: 15

Stratigraphic classification of host rock

Era: Proterozoic Period: Neoproterozoic

Province: Caledonides

Geotec.unit: Seve-Køli Nappe Complex

Tectonic complex:

Igneous complex:

Group: Bogengruppen Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Hornblende Major mineral (>10%)

Gangue mineral Carbonate Subordinate mineral (1-10%)

Gangue mineral Chlorite Subordinate mineral (1-10%)

Gangue mineral Albite Subordinate mineral (1-10%)

Gangue mineral Biotite Subordinate mineral (1-10%)

Gangue mineral Epidote Accessory mineral (<1%)

Ore mineral Magnetite Major mineral (>10%)

Ore mineral Apatite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Host rock Karbonat gl.sk. Sedimentary
Original rock :Argillaceous sediment

Metamorphic facies :Amphibolite

Wall rock Kalkspatmarmor Sedimentary
Original rock :Limestone

Metamorphic facies :Amphibolite

Wall rock Dolomittmarmor Sedimentary
Original rock :Dolomite

Metamorphic facies :Amphibolite

Wall rock Granat Kv.gl.sk. Sedimentary
Original rock :Greywacke

Metamorphic facies :Amphibolite

Structures

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

Host rock Primary layering Strike/Dip :180 / 15 Syn-mineralisation ;...Effect :None

Host rock Foliation Strike/Dip :180 / 15

Host rock Fold axis Strike/Dip :270 / 15

Information(s) in free text format

Free text

Lotternes er oppboret med 9 hull i 1916. 23 malmsoner i disse hullene utgjorde tilsammen 107,1 m lengde, og utregnet gjennomsnitt av analyser fra disse gir følgende: 21,1 % Fe-tot., 0,728 % P og 0,307 % S. Reservene, uten hensyn til brytbarhet, kan være ca. 7,9 mill. t. I følge boringen er mineraliseringen i Lotternes fattigere enn i Gunnarheimen. 9 utsøkt rike malmstuffer fra Lotternes-horisonten er analysert ved Norsk Jernverks lab. 1978, og ga følgende gjennomsnittsverdier: 27,18 % Fe-tot., 23,8 % Fe-magn., 0,34 % TiO2, 0,056 % MnO, 0,94 % P og 0,056 % S. 8 prøver av fattig impregnasjonsmalm gav i gjennomsnitt: 14,2 % Fe-tot., 7,2 % Fe-magn., 0,71 % TiO2, 0,074 % MnO, 0,44 % P og 0,529 % S. Det er relativt høye verdier av svovel og titan i denne impregnasjonsmalmen.

Bibliography:

From NGU's Reference Archive:

Johansson, J. A. , 1913

Lotternes jernmalmfelt.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 648;1 pages

Abstract:

Forst. Forekomstens navn og koordinater: Lavangen. Bergarten i området er kvartsglimmerskifer med kalksteinssoner. Malmen består av magnetitt med noe kvarts, glimmer, hornblende og granat. Magnetittgehalter er 35-40 %.

Fieldsamples

Sample No. Sample type Miscellanrous

JSFE1314 Bedrock

Sampler :Jan Sverre Sandstad/...Stored :Løkken/...Size(kg) :2

Comment :Banded magnetite-quartz-amphibole-garnet mineralisation

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 : Rundkollen I

(Object Id : 1920,001,01,00)

Location

County : Troms (19) Municipality : Lavangen (1920)

Map 1:50000: Gratangen (1432-3) Map 1:250000: Narvik

Marking point: Longitude: 17.6391020 Latitude: 68.7470260

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 606732 m. Y-coord: 7628446 m.

Commodity

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

Element(s): Fe P

Production

Activity: Exploration Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Fieldsamples

Sample No. Sample type Miscellanrous

TR0414.02 Bedrock

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

Comment :Fink., båndet mt.-min.

No. of registrated element analyses = 1

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

Name of Locality : Rundkollen II

(Object Id : 1920,001,02,00)

Location

County : Troms (19) Municipality : Lavangen (1920)

Map 1:50000: Gratangen (1432-3) Map 1:250000: Narvik

Marking point: Longitude: 17.6338980 Latitude: 68.7448630

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 606532 m. Y-coord: 7628196 m.

Commodity

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

Element(s): Fe P

Production

Activity: Exploration Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Fieldsamples

Sample No. Sample type Miscellanrous

TR0414.01 Bedrock

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

Comment :Fink., båndet mt.-min.

No. of registrated element analyses = 1

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

Name of Locality : Rundkollen III

(Object Id : 1920,001,03,00)

Location

County : Troms (19) Municipality : Lavangen (1920)

Map 1:50000: Gratangen (1432-3) Map 1:250000: Narvik

Marking point: Longitude: 17.6320460 Latitude: 68.7448920

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 606457 m. Y-coord: 7628196 m.

Commodity

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

Element(s): Fe P

Production

Activity: Exploration Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Name of Locality : Rundkollen IV

(Object Id : 1920,001,04,00)

Location

County : Troms (19) Municipality : Lavangen (1920)

Map 1:50000: Gratangen (1432-3) Map 1:250000: Narvik

Marking point: Longitude: 17.6396470 Latitude: 68.7411830

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 606782 m. Y-coord: 7627796 m.

Commodity

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

Element(s): Fe P

Production

Activity: Exploration Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Name of Locality : Sandbotnaksla

(Object Id : 1920,001,05,00)

Location

County : Troms (19) Municipality : Lavangen (1920)

Map 1:50000: Gratangen (1432-3) Map 1:250000: Narvik

Marking point: Longitude: 17.6682010 Latitude: 68.7111160

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 608082 m. Y-coord: 7624496 m.

Commodity

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

Element(s): Fe P

Production

Activity: Exploration Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Analyse Results

from

Deposit Area 1920 - 001 Lotternes

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#

JSFE1314 Bedrock 19 23 3 7 10 .3

TR0414.01 Bedrock 1221 979 233 -1 6 1.3 5.0

TR0414.02 Bedrock 352 281 91 -1 5 .5 -2.0

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

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

JSFE1314 0 211 1.70

TR0414.01 -3.0 -3.0 -5.0 5 1.3 51 3.00 10 -2

TR0414.02 -3.0 -3.0 -5.0 3 1.4 6 1.00 -2 -2

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

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

JSFE1314 8.00 88 109 4.50 0.70

TR0414.01 .28 42 12 417 21.32 2.00 6.00 -2

TR0414.02 .26 36 12 230 27.58 3.00 5.00 -2

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

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

JSFE1314 25.7 117.9 30.1 92 7.30 0.60 0.80 12.60 28.10

TR0414.01 217.0 8.00

TR0414.02 204.0 4.00

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

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

JSFE1314 3.70 15.70 3.40 0.82 3.99 0.72 4.89 1.01 2.96

TR0414.01

TR0414.02

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

Sample No. Tm* Yb* Lu* B* Hf*

JSFE1314 0.41 2.82 0.49 2.80

TR0414.01 4

TR0414.02 -3

Oxide analyses
( All values are in % )

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

JSFE1314 Bedrock 50.33 6.00 0.50 32.47 0.11 3.63 4.61

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

Sample No. Na2O K2O P2O5 Loss Sum

JSFE1314 0.59 0.89 1.13 -0.07 100.00

	Element/product	Crude ore grade or quality
	FE_MAG	15 %
	FE_TOT	21.1 %
	P	0.73 %
	S	0.307 %

From - To	Activity	Comments
1910 - 1916	Pitting
1916 - 1916	Core drilling
1978 - 1978	Geology	Company/Institution :Rana Gruber A/S

Era:	Proterozoic	Period:	Neoproterozoic
Dating:		Method:
Genesis:	Sedex	Form:	Layer
Main texture:	Banded	Min. distribution:	Disseminated (<20 % 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	Hornblende	Major mineral (>10%)
Gangue mineral	Carbonate	Subordinate mineral (1-10%)
Gangue mineral	Chlorite	Subordinate mineral (1-10%)
Gangue mineral	Albite	Subordinate mineral (1-10%)
Gangue mineral	Biotite	Subordinate mineral (1-10%)
Gangue mineral	Epidote	Accessory mineral (<1%)
Ore mineral	Magnetite	Major mineral (>10%)
Ore mineral	Apatite	Subordinate mineral (1-10%)

Relationship	Rock	Origin
Host rock	Karbonat gl.sk.	Sedimentary Original rock :Argillaceous sediment
		Metamorphic facies :Amphibolite
Wall rock	Kalkspatmarmor	Sedimentary Original rock :Limestone
		Metamorphic facies :Amphibolite
Wall rock	Dolomittmarmor	Sedimentary Original rock :Dolomite
		Metamorphic facies :Amphibolite
Wall rock	Granat Kv.gl.sk.	Sedimentary Original rock :Greywacke
		Metamorphic facies :Amphibolite

Location:	Type:	Orientation(360 gr.):	Relation to min.:
Host rock	Primary layering	Strike/Dip :180 / 15	Syn-mineralisation ;...Effect :None
Host rock	Foliation	Strike/Dip :180 / 15
Host rock	Fold axis	Strike/Dip :270 / 15

	Abstract:
	Forst. Forekomstens navn og koordinater: Lavangen. Bergarten i området er kvartsglimmerskifer med kalksteinssoner. Malmen består av magnetitt med noe kvarts, glimmer, hornblende og granat. Magnetittgehalter er 35-40 %.

Activity:	Exploration	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JSFE1314	Bedrock	19	23	3	7	10		.3
TR0414.01	Bedrock	1221	979	233	-1	6	1.3	5.0
TR0414.02	Bedrock	352	281	91	-1	5	.5	-2.0

Sample No.	Pt#	Pd#	Rh#	As*	Cd*	Ba*	Mo*	Sb*	Bi*
JSFE1314				0		211	1.70
TR0414.01	-3.0	-3.0	-5.0	5	1.3	51	3.00	10	-2
TR0414.02	-3.0	-3.0	-5.0	3	1.4	6	1.00	-2	-2

Sample No.	Ga*	S%	V*	Cr*	Mn*	Fe%	Th*	U*	W*
JSFE1314	8.00		88	109			4.50	0.70
TR0414.01		.28	42	12	417	21.32	2.00	6.00	-2
TR0414.02		.26	36	12	230	27.58	3.00	5.00	-2

Sample No.	Rb*	Sr*	Y*	Zr*	Nb*	Ta*	Cs*	La*	Ce*
JSFE1314	25.7	117.9	30.1	92	7.30	0.60	0.80	12.60	28.10
TR0414.01		217.0						8.00
TR0414.02		204.0						4.00

Sample No.	Pr*	Nd*	Sm*	Eu*	Gd*	Tb*	Dy*	Ho*	Er*
JSFE1314	3.70	15.70	3.40	0.82	3.99	0.72	4.89	1.01	2.96
TR0414.01
TR0414.02

Sample No.	Tm*	Yb*	Lu*	B*	Hf*
JSFE1314	0.41	2.82	0.49		2.80
TR0414.01				4
TR0414.02				-3

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
JSFE1314	Bedrock	50.33	6.00	0.50	32.47	0.11	3.63	4.61