Fact Sheet for <b>Occurence 5605

					Norsk versjon
	THE ORE DATABASE
	Occurence 5605 - 008 Grundtjern
	(Object Id: 664) (Last updated: 09.10.2017)

Drill Cores: Grundtjern

Location

County:

Finnmark

Municipality:

Sør-Varanger (5605)

Map 1:50000:

Kirkenes (2434-2)

Map 1:250000:

Kirkenes

Coordinate system:

EU89-UTM Zone 36

East:

384110 m.

North:

7727208 m.

Longitude:

30.0160580

Latitude:

69.6279030

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Resource

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

Importance

Raw material meaning:

Not Assessed (reg. 20.03.2017)

Resources and production

	Activity:	Mining	Reserves:	2900 thousand tons
	Operating method:	Open pit mining	Historical production:	5300 thousand tons

Products

Element/product Crude ore grade or quality Reg. date

Fe-mag. 31 % 18.12.1996

Operations

From - To Activity Comments

1972 - 1972 Regular production Company/Institution :A/S Sydvaranger

1996 - 1996 Sampling Company/Institution :A/S Sydvaranger

Mineralization

Era: Archean Period:

Genesis: Sedex Form: Layer

Main texture: Banded Min. distribution: Semi-massive (20-50 % ore minerals)

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

Strike/Dip: 330 / 65 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Archean Period:

Province: Troms-Finnmark Basement Province

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Bjørnevann Group Formation: Fisketind Formation

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Epidote Subordinate mineral (1-10%)

Ore mineral Magnetite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Wall rock Hornblende gneiss Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Structures

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

Host rock Foliation Strike/Dip :330 / 65 Post-mineralisation ;...Effect :None

Host rock Primary layering Strike/Dip :330 / 65 Syn-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

Grundtjern-dagbruddet, som ble drevet i perioden 1972 - 77, er ca. 800 m langt. Det er tatt ut 5.3 mill. tonn malm og 5.5 mill. tonn gråberg. Grundtjernmalmen ligger mellom Søstervannmalmen og Tverrdalen Nord, og dens stratigrafiske posisjon er noe usikker. Malmen består av en enkel malmhorisont, hengmalm med 31 % Fe magn., med steile sørlige foldeakser, dreiende vest mot dypet. En synformslukning mot øst underbygger teorien om at Grundtjernsmalmen danner en antiform av hengmalmsonen i Søstervannsmalmen. Malmen er noe oppsplittet av hornblendegneissoner, p.g.a. den kraftige N-S isoklinale foldefasen feltet er påvirket av. Heng og liggbergartene er hornblendegneis. I forbindelse med reevaluering for gjeoppstarting av Sydvaranger Gruve AS (http://www.sydvarangergruve.no/) i 2009 er forekomsten JORC-klassifisert, av Coffey Mining. Inferred Resources er beregnet til 3 millioner tonn med 34% total jern. Se http://www.northerniron.com.au/

Bibliography:

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

Iversen, E. 1991: Geologisk beskrivelse av kartblad 2434 II Kirkenes og deler av kartblad 2434 III Høybuktmoen. Rapp. nr. 2072, Prospektering A/S.

A/S Sydvaranger 1985: Gruveplan 1985.

Fieldsamples

Sample No. Sample type Miscellanrous

FI0009.01 Bedrock

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

Comment: Fine grained, quartz banded mt min.

No. of registrated element analyses = 1

FI0009.02 Bedrock

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

Comment: Fine grained, quartz banded mt min.

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 5605 - 008 Grundtjern

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#

FI0009.01 Bedrock 10 2 -3 -1 2 -.3 1.0

FI0009.02 Bedrock 5 -1 -3 -1 7 -.3 4.0

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

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

FI0009.01 -1.0 -1.0 -1.0 -2 1.9 2 -1.00 -2 -2

FI0009.02 -1.0 1.0 -1.0 -2 -.2 18 5.00 -2 6

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

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

FI0009.01 2 -1 430 22.16 5.00 7.00 -2 3.0 1.00

FI0009.02 6 1 357 22.58 7.00 -5.00 -2 16.0 8.00

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

Sample No. B*

FI0009.01 -3

FI0009.02 -3

	Element/product	Crude ore grade or quality	Reg. date
	Fe-mag.	31 %	18.12.1996

From - To	Activity	Comments
1972 - 1972	Regular production	Company/Institution :A/S Sydvaranger
1996 - 1996	Sampling	Company/Institution :A/S Sydvaranger

Era:	Archean	Period:
Genesis:	Sedex	Form:	Layer
Main texture:	Banded	Min. distribution:	Semi-massive (20-50 % ore minerals)

	Province:	Troms-Finnmark Basement Province
	Geotec.unit:
	Tectonic complex:
	Igneous complex:

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

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

Location:	Type:	Orientation(360 gr.):	Relation to min.:
Host rock	Foliation	Strike/Dip :330 / 65	Post-mineralisation ;...Effect :None
Host rock	Primary layering	Strike/Dip :330 / 65	Syn-mineralisation ;...Effect :Controls

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
FI0009.01	Bedrock	10	2	-3	-1	2	-.3	1.0
FI0009.02	Bedrock	5	-1	-3	-1	7	-.3	4.0

Sample No.	Pt#	Pd#	Rh#	As*	Cd*	Ba*	Mo*	Sb*	Bi*
FI0009.01	-1.0	-1.0	-1.0	-2	1.9	2	-1.00	-2	-2
FI0009.02	-1.0	1.0	-1.0	-2	-.2	18	5.00	-2	6

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
FI0009.01	2	-1	430	22.16	5.00	7.00	-2	3.0	1.00
FI0009.02	6	1	357	22.58	7.00	-5.00	-2	16.0	8.00