Fact Sheet for Deposit Area 1852

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 1852 - 002
	(Last updated 26.apr.2020)

Name of Deposit Area : Svarthullet

(Object Id : 1852,002,00,00)

Location

County :

Nordland (18)

Municipality :

Tjeldsund (1852)

Map 1:50000:

Tjeldsundet (1332-3)

Map 1:250000:

Narvik

Marking point:

Longitude:

16.5402790

Latitude:

68.5038300

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-coord:

562982 m.

Y-coord:

7599826 m.

Commodity

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

Production

Activity:	Pitting	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:	16 m3

Importance

Public: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 03.apr.2001 by Jan Sverre Sandstad)

Operations

From - To Activity Comments

1916 - 1916 Test mining

Mineralization

Era: Proterozoic Period:

Dating: Method:

Genesis: Sedimentary deposit Form: Layer

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

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

Strike/Dip: 340 / 20 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Proterozoic Period:

Province:

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Calcite Major mineral (>10%)

Gangue mineral Biotite Subordinate mineral (1-10%)

Gangue mineral Muscovite Subordinate mineral (1-10%)

Gangue mineral Chlorite Subordinate mineral (1-10%)

Ore mineral Magnetite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Wall rock Amfibolitt Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Structures

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

Wall rock Foliation Strike/Dip :340 / 20 Post-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Minor trenches have been made along the iron formation at Svarthullet east of Ramsund village, early last century. The major trench is 20 m long, 2 m wide and up to 3 m high. In the central part of the trench outcrops 30-35 cm thick, massive magnetite with thin bands of calcite and chlorite (Sample JSFE1421/22). On both side of the iron formation, 2-3 dm thick bands of chlorite schist are exposed. The iron formation is located in a sequence of amphibolite (Sample JSFE1420) with 0.5-1 m thick layers of calcitic marble. Two minor trenches are found nearby, but they are completely overgrown.

Fieldsamples

Sample No. Sample type Miscellanrous

JSFE1421 Bedrock

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

Comment :Magnetite-carbonate-chlorite-mica banded ore, fine grained

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

JSFE1422 Bedrock

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

Comment :Magnetite-carbonate-chlorite-mica banded ore, corase grained

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

NO0297.02 Bedrock

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

Comment :Klorittskifer fra ligg.

No. of registrated element analyses = 1

NO0297.03 Bedrock

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

Comment :Amfibolitt fra heng.

No. of registrated element analyses = 1

NO0297.04 Bedrock

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

Comment :Fink. massiv magnetitt.

No. of registrated element analyses = 1

NO0297.05 Bedrock

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

Comment :Fink. massiv magnetitt.

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 : 1852,002,01,00)

Location

County : Nordland (18) Municipality : Tjeldsund (1852)

Map 1:50000: Tjeldsundet (1332-3) Map 1:250000: Narvik

Marking point: Longitude: 16.5402860 Latitude: 68.5039200

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 562982 m. Y-coord: 7599836 m.

Commodity

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

Element(s): Fe

Production

Activity: Pitting Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Name of Locality : Skjerp 2

(Object Id : 1852,002,02,00)

Location

County : Nordland (18) Municipality : Tjeldsund (1852)

Map 1:50000: Tjeldsundet (1332-3) Map 1:250000: Narvik

Marking point: Longitude: 16.5402550 Latitude: 68.5034710

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 562982 m. Y-coord: 7599786 m.

Commodity

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

Element(s): Fe

Production

Activity: Pitting Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Information(s) in free text format

Free text

40 m sør for den store røskegrøfta er en røskegrop uten tipp. Ingen blotning i røsken, men få meter under, i elva, er det blottet 3 m mektig fin- til middelskornet amfibolitt, så 1 m mektig middelskornet hvit kalkspatmarmor med underliggende amfibolitt.

Name of Locality : Skjerp 3

(Object Id : 1852,002,03,00)

Location

County : Nordland (18) Municipality : Tjeldsund (1852)

Map 1:50000: Tjeldsundet (1332-3) Map 1:250000: Narvik

Marking point: Longitude: 16.5399860 Latitude: 68.5031150

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 562972 m. Y-coord: 7599746 m.

Commodity

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

Element(s): Fe

Production

Activity: Pitting Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Information(s) in free text format

Free text

50 m sør for denne igjen er det en 5 m lang og 3 m dyp, gjengrodd røskegrøft (3 m3 tipp). Ingen blotning. Prøve 01 er fra tippen av finkornig massiv magnetitt med litt muskovitt, biotitt og kloritt.

Fieldsamples

Sample No. Sample type Miscellanrous

NO0297.01 Bedrock

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

Comment :Fink. massiv magnetitt.

No. of registrated element analyses = 1

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

Name of Sample point : Prøvepunkt 1

(Object Id : 1852,002,03,01)

Location

County : Nordland (18) Municipality : Tjeldsund (1852)

Map 1:50000: Tjeldsundet (1332-3) Map 1:250000: Narvik

Marking point: Longitude: 16.5394590 Latitude: 68.5032330

EU89-UTM Zone 33 (Coordinates IS confirmed)

X-coord: 562951 m. Y-coord: 7599758 m.

Commodity

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

Element(s): Fe

Fieldsamples

Sample No. Sample type Miscellanrous

JSFE1420 Bedrock

Stored :Løkken

Comment :Amphibolite with magnetite dissemination

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 1852 - 002 Svarthullet

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#

JSFE1420 Bedrock 114 26 1 64 6 2.3

JSFE1421 Bedrock 1 72 2 105 147 2.4

JSFE1422 Bedrock 1 81 1 96 141 -.5

NO0297.01 Bedrock -16 56 -81 52 123 -16.2 1.0

NO0297.02 Bedrock 1 82 -5 44 44 -1.0 1.0

NO0297.03 Bedrock 11 20 -5 12 19 -1.0 7.0

NO0297.04 Bedrock -16 73 -81 70 94 -16.2 1.0

NO0297.05 Bedrock -16 51 -81 52 66 -16.2 1.0

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

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

JSFE1420 -1 25 0.20

JSFE1421 2 51 -0.10

JSFE1422 2 111 -0.10

NO0297.01 84.0 3.0 -20 -16.2 -16 -16.20 -20 -20 -20

NO0297.02 4.0 3.0 -20 -1.0 159 -1.00 -20 -20 -20

NO0297.03 3.0 3.0 -20 -1.0 12 -1.00 -20 -20 -20

NO0297.04 3.0 4.0 -20 -16.2 -16 -16.20 -20 -20 -20

NO0297.05 38.0 3.0 -20 -16.2 -16 -16.20 -20 -20 -20

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

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

JSFE1420 21.60 533 0.30 0.20 1

JSFE1421 23.60 1287 3.00 0.40 -1

JSFE1422 24.00 706 2.90 0.50 -1

NO0297.01 -.02 257 -16 588 13.60 -30.00 -30.00

NO0297.02 .00 97 41 740 3.89 -30.00 -30.00

NO0297.03 .01 79 31 230 1.79 -30.00 -30.00

NO0297.04 .00 404 -16 828 18.90 -30.00 -30.00

NO0297.05 .00 367 -16 572 15.10 -30.00 -30.00

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

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

JSFE1420 5.8 95.7 26.7 87 4.30 0.40 -0.10 4.80 12.20

JSFE1421 7.6 42.7 6.4 7 0.60 0.20 0.50 4.60 11.90

JSFE1422 38.1 26.3 9.9 23 1.30 0.10 1.60 8.80 21.10

NO0297.01 -32.4 -16.20

NO0297.02 38.8 1.86

NO0297.03 13.3 1.08

NO0297.04 54.3 -16.20

NO0297.05 57.4 -16.20

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

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

JSFE1420 1.91 9.40 3.19 1.19 4.10 0.81 4.87 1.00 3.02

JSFE1421 2.07 8.80 2.05 0.53 1.73 0.25 1.25 0.22 0.57

JSFE1422 3.55 16.20 3.16 0.61 2.40 0.34 1.88 0.35 0.95

NO0297.01

NO0297.02

NO0297.03

NO0297.04

NO0297.05

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

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

JSFE1420 0.46 2.93 0.41 2.40

JSFE1421 0.09 0.49 0.08 0.20

JSFE1422 0.14 0.86 0.14 0.60

NO0297.01 -81

NO0297.02 -5

NO0297.03 6

NO0297.04 -81

NO0297.05 -81

Oxide analyses
( All values are in % )

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

JSFE1420 Bedrock 47.18 11.40 2.45 22.07 0.24 4.89 7.74

JSFE1421 Bedrock 8.49 2.55 0.17 76.39 0.11 6.48 2.73

JSFE1422 Bedrock 21.10 5.23 0.38 53.50 0.09 13.02 1.88

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

Sample No. Na2O K2O P2O5 Loss Sum

JSFE1420 2.54 0.45 0.11 0.52 100.00

JSFE1421 0.06 0.16 0.34 2.43 100.00

JSFE1422 0.09 0.87 0.33 3.44 100.00

Era:	Proterozoic	Period:
Dating:		Method:
Genesis:	Sedimentary deposit	Form:	Layer
Main texture:	Banded	Min. distribution:	Massive (>50 % ore minerals)

	Province:
	Geotec.unit:
	Tectonic complex:
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Calcite	Major mineral (>10%)
Gangue mineral	Biotite	Subordinate mineral (1-10%)
Gangue mineral	Muscovite	Subordinate mineral (1-10%)
Gangue mineral	Chlorite	Subordinate mineral (1-10%)
Ore mineral	Magnetite	Major mineral (>10%)

Relationship	Rock	Origin
Wall rock	Amfibolitt	Extrusive Original rock :Basalt
		Metamorphic facies :Amphibolite

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :340 / 20	Post-mineralisation ;...Effect :None

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JSFE1420	Bedrock	114	26	1	64	6		2.3
JSFE1421	Bedrock	1	72	2	105	147		2.4
JSFE1422	Bedrock	1	81	1	96	141		-.5
NO0297.01	Bedrock	-16	56	-81	52	123	-16.2	1.0
NO0297.02	Bedrock	1	82	-5	44	44	-1.0	1.0
NO0297.03	Bedrock	11	20	-5	12	19	-1.0	7.0
NO0297.04	Bedrock	-16	73	-81	70	94	-16.2	1.0
NO0297.05	Bedrock	-16	51	-81	52	66	-16.2	1.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
JSFE1420			-1		25	0.20
JSFE1421			2		51	-0.10
JSFE1422			2		111	-0.10
NO0297.01	84.0	3.0	-20	-16.2	-16	-16.20	-20	-20	-20
NO0297.02	4.0	3.0	-20	-1.0	159	-1.00	-20	-20	-20
NO0297.03	3.0	3.0	-20	-1.0	12	-1.00	-20	-20	-20
NO0297.04	3.0	4.0	-20	-16.2	-16	-16.20	-20	-20	-20
NO0297.05	38.0	3.0	-20	-16.2	-16	-16.20	-20	-20	-20

Sample No.	Ga*	S%	V*	Cr*	Mn*	Fe%	Th*	U*	W*
JSFE1420	21.60		533				0.30	0.20	1
JSFE1421	23.60		1287				3.00	0.40	-1
JSFE1422	24.00		706				2.90	0.50	-1
NO0297.01		-.02	257	-16	588	13.60	-30.00	-30.00
NO0297.02		.00	97	41	740	3.89	-30.00	-30.00
NO0297.03		.01	79	31	230	1.79	-30.00	-30.00
NO0297.04		.00	404	-16	828	18.90	-30.00	-30.00
NO0297.05		.00	367	-16	572	15.10	-30.00	-30.00

Sample No.	Rb*	Sr*	Y*	Zr*	Nb*	Ta*	Cs*	La*	Ce*
JSFE1420	5.8	95.7	26.7	87	4.30	0.40	-0.10	4.80	12.20
JSFE1421	7.6	42.7	6.4	7	0.60	0.20	0.50	4.60	11.90
JSFE1422	38.1	26.3	9.9	23	1.30	0.10	1.60	8.80	21.10
NO0297.01		-32.4						-16.20
NO0297.02		38.8						1.86
NO0297.03		13.3						1.08
NO0297.04		54.3						-16.20
NO0297.05		57.4						-16.20

Sample No.	Pr*	Nd*	Sm*	Eu*	Gd*	Tb*	Dy*	Ho*	Er*
JSFE1420	1.91	9.40	3.19	1.19	4.10	0.81	4.87	1.00	3.02
JSFE1421	2.07	8.80	2.05	0.53	1.73	0.25	1.25	0.22	0.57
JSFE1422	3.55	16.20	3.16	0.61	2.40	0.34	1.88	0.35	0.95
NO0297.01
NO0297.02
NO0297.03
NO0297.04
NO0297.05

Sample No.	Tm*	Yb*	Lu*	B*	Hf*
JSFE1420	0.46	2.93	0.41		2.40
JSFE1421	0.09	0.49	0.08		0.20
JSFE1422	0.14	0.86	0.14		0.60
NO0297.01				-81
NO0297.02				-5
NO0297.03				6
NO0297.04				-81
NO0297.05				-81

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
JSFE1420	Bedrock	47.18	11.40	2.45	22.07	0.24	4.89	7.74
JSFE1421	Bedrock	8.49	2.55	0.17	76.39	0.11	6.48	2.73
JSFE1422	Bedrock	21.10	5.23	0.38	53.50	0.09	13.02	1.88

Sample No.	Na2O	K2O	P2O5	Loss	Sum
JSFE1420	2.54	0.45	0.11	0.52	100.00
JSFE1421	0.06	0.16	0.34	2.43	100.00
JSFE1422	0.09	0.87	0.33	3.44	100.00