Fact Sheet for <b>Occurence 1824

					Norsk versjon
	THE ORE DATABASE
	Occurence 1824 - 003 Buktelv
	(Object Id: 2165) (Last updated: 28.04.2020)

Location

County:

Nordland

Municipality:

Vefsn (1824)

Map 1:50000:

Elsfjord (1927-3)

Map 1:250000:

Mo i Rana

Coordinate system:

EU89-UTM Zone 33

East:

427030 m.

North:

7329121 m.

Longitude:

13.3874290

Latitude:

66.0742210

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Resource

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

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Resources and production

	Activity:	Exploration	Reserves:
	Operating method:		Historical production:	0 thousand tons

Products

Element/product Crude ore grade or quality Reg. date

Fe 18 % 01.12.1992

Operations

From - To Activity Comments

1974 - 1975 Geology Company/Institution :Rana Gruber

1976 - 1976 Geophysics Company/Institution :Rana Gruber

Mineralization

Era: Proterozoic Period: Neoproterozoic

Genesis: Sedex Form: Layer

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

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

Strike/Dip: 220 / 70 Direction: 200

Plunge: 20

Stratigraphic classification of host rock

Era: Period:

Province: Caledonides

Geotec.unit: Helgeland Nappe Complex

Tectonic complex: Elsfjord unit

Igneous complex:

Group: Elsfjordgruppen Formation: Jernmalmformasjon

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Epidote Major mineral (>10%)

Gangue mineral Potassic feldspar Subordinate mineral (1-10%)

Gangue mineral Apatite Accessory mineral (<1%)

Ore mineral Magnetite Subordinate mineral (1-10%)

Ore mineral Hematite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Unknown Amfibolitt Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Unknown Staurolitt gr.gl.sk. Sedimentary
Original rock :Argillaceous sediment

Metamorphic facies :Amphibolite

Unknown Karbonat Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Structures

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

Unknown Primary layering Strike/Dip :220 / 90 Syn-mineralisation ;...Effect :None

Information(s) in free text format

Free text

A southern continuation of the iron formation at Skravlåga occurs in the Buktelv area. The outcrops along the river is not as accessible and good as along Skravlåga, but the IF can be observed at several localities along a path on the north side of the river and along the ridge northeastwards towards Ruadrabben. Banded, fine grained iron formations with magnetite disseminations in calcareous epidote-amphibole rich matrix exist (Samples JS_FE1723-24). The IF is from 8 to 30 m thick and it is in contact with garnet-mica schist in the southeast. There might exist two horizons of IF in this area, but detailed mapping is needed to confirm this.

Bibliography:

From NGU's Reference Archive:

Bøckman, K.L. , 1946

Elsfjord kis- og jernmalmfelter.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1953;1 pages

Abstract:

Lok. Nr. 40007, 40455, 40456, 40458-40460. Rapporten beskriver en 1-dags befaring av Elsfjord kis- og jernmalmfelter 1946 Stien kisgruve. Malmen er avdekket med 2 dagskjæringer og 1 synk hvor mineraliseringen er impregnasjon av kobber- og magnetkis. Øvre Stien. Forrustet gangsone uten økonomisk verdi. Toven jernmalmfelt. Forekomsten er avdekket med en røsk hvor mineraliseringen er striper av magnetitt.

Poulsen, A.O. , 1941

Jernmalmforekomster ved Elsfjorden.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 77;4 pages

Abstract:

Lok. Nr. 40455, 40456, 40458, 40460 Rapporten er en utredning som bygger på tidligere beskrivelser av J. C. Torgersen og professor J. H. L. Vogt. Mineraliseringene er vanlig sedimentær jernmalm av Dunderlandstypen, men malmleiene er mindre. Følgende malmfelt blir beskrevet: Seljelidfeltet Stormofeltet Davemofeltet Fuglestrand-, Skravlå- og Drevasfeltet. Mineraliseringen er magnetitt og hematitt og metallinnholdet er ca. 35% - 40 % Fe.

Torgersen, J.C. , 1921

Elsfjordfeltet.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 981;1 pages

Abstract:

Rapporten behandler Elsfjord Kisgruve (Flatmogruven) Forekomsten er avdekket med 8 m lang skjæring og mineralisering opptrer som impregnasjon av svovel- og magnetkis i kvartsittisk skifer. Forekomsten ligger i et kisdrag hvor det er kjent flere kismineraliseringer. Videre undersøkelser av gruva og kisdraget er ønsket.

Fieldsamples

Sample No. Sample type Miscellanrous

JS_FE1723 Bedrock

Sampler: J.S. Sandstad

Comment: Magnetite, banded, fine grained

No. of registrated element analyses = 1

No. of registrated oxide analyses = 1

NO0039.01 Bedrock

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

Comment: Fink., båndet mt-malm.

No. of registrated element analyses = 1

NO0039.02 Bedrock

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

Comment: Fink., båndet mt-malm.

No. of registrated element analyses = 1

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

Name of Locality: Stillbekken

(Object Id: 6829 3,01,00)

Location

County: Nordland Municipality: Vefsn (1824)

Map 1:50000: Elsfjord (1927-3) Map 1:250000: Mo i Rana

Coordinate system: EU89-UTM Zone 33

East: 427791 m. North: 7330521 m.

Longitude: 13.4034680 Latitude: 66.0869490

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Resource

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

Element(s): Fe

Resources and production

Activity: Exploration Reserves:

Operating method: Historical production:

Information(s) in free text format

Free text

A wide section of the Buktelv iron formation and rock sequence is exposed along a 100 m long, W-E orientated, steep stream section along Stillbekken. Banded marble occurs in the lowermost part in the west. Upstream dominate greyish green, calcareous amphibolitic schist with 0.5-1 m thick layers of more massive and homogenous banded and fine grained IF as observed further south (Sample JS_FE1725). Undisputable diamictite was not observed in this area.

Fieldsamples

Sample No. Sample type Miscellanrous

JS_FE1725 Bedrock

Sampler: J.S. Sandstad

Comment: Finely banded magnetite 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: Raudrabben

(Object Id: 36453 3,01,01)

Location

County: Nordland Municipality: Vefsn (1824)

Map 1:50000: Elsfjord (1927-3) Map 1:250000: Mo i Rana

Coordinate system: EU89-UTM Zone 33

East: 427471 m. North: 7329816 m.

Longitude: 13.3967950 Latitude: 66.0805580

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Resource

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

Element(s): Fe

Fieldsamples

Sample No. Sample type Miscellanrous

JS_FE1724 Bedrock

Sampler: J.S. Sandstad

Comment: Finely banded magnetite-amphibole-epidote, calcareous

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: Skogly

(Object Id: 6830 3,02,00)

Location

County: Nordland Municipality: Vefsn (1824)

Map 1:50000: Elsfjord (1927-3) Map 1:250000: Mo i Rana

Coordinate system: EU89-UTM Zone 33

East: 424332 m. North: 7325797 m.

Longitude: 13.3298080 Latitude: 66.0437810

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Resource

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

Element(s): Fe

Resources and production

Activity: Exploration Reserves:

Operating method: Historical production:

Information(s) in free text format

Description

Beliggenhet: 70 m.o.h. Tykkelse: 2 m Lengde: 100 m

Analyse Results

from

Deposit Area 1824 - 003 Buktelv

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#

JS_FE1723 Bedrock 1 17 1 11 11 2.4

JS_FE1724 Bedrock 9 27 2 6 10 1.2

JS_FE1725 Bedrock 2 16 2 11 10 2.4

NO0039.01 Bedrock 16 27 4 -1 23 -.3 62.0

NO0039.02 Bedrock 10 24 3 -1 19 -.3 5.0

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

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

JS_FE1723 1 248 0.40 1

JS_FE1724 2 114 0.80 2

JS_FE1725 1 181 0.50 -1

NO0039.01 -3.0 -3.0 -5.0 40 -.2 8 1.00 -2

NO0039.02 -3.0 -3.0 -5.0 11 -.2 10 -1.00 2

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

Sample No. Bi* Se* Ga* S% V* Cr* Mn* Fe% Th*

JS_FE1723 -0.50 9.10 90 5.00

JS_FE1724 -0.50 5.30 88 2.40

JS_FE1725 -0.50 7.50 80 4.20

NO0039.01 -2 -.01 53 39 1464 28.80 3.00

NO0039.02 -2 .02 43 26 1353 18.50 2.00

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

Sample No. U* W* Rb* Sr* Y* Zr* Nb* Ta* Cs*

JS_FE1723 0.80 -1 68.4 275.5 24.1 99 9.30 0.50 0.80

JS_FE1724 0.40 -1 20.5 206.2 17.3 61 5.00 0.20 0.90

JS_FE1725 0.70 -1 40.9 404.8 23.8 81 6.40 0.40 0.70

NO0039.01 -5.00 -2 67.0

NO0039.02 -5.00 -2 65.0

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

Sample No. La* Ce* Pr* Nd* Sm* Eu* Gd* Tb* Dy*

JS_FE1723 22.80 48.20 5.40 20.50 4.19 0.93 4.10 0.67 4.18

JS_FE1724 14.20 29.50 3.51 14.30 2.97 0.65 2.87 0.48 2.89

JS_FE1725 20.00 41.80 4.86 19.20 3.81 0.87 3.98 0.63 3.87

NO0039.01 9.00

NO0039.02 7.00

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

Sample No. Ho* Er* Tm* Yb* Lu* B* Be* Hf*

JS_FE1723 0.89 2.68 0.40 2.71 0.44 -1 2.30

JS_FE1724 0.62 1.91 0.25 1.80 0.30 2 1.40

JS_FE1725 0.78 2.57 0.36 2.35 0.38 1 2.20

NO0039.01 6

NO0039.02 8

Oxide analyses
( All values are in % )

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

JS_FE1723 Bedrock 42.00 6.29 0.51 38.60 0.36 3.38 6.05

JS_FE1724 Bedrock 35.00 3.26 0.29 53.30 0.19 2.24 4.00

JS_FE1725 Bedrock 41.00 5.39 0.39 37.80 0.54 3.10 8.60

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

Sample No. Na2O K2O P2O5 Loss Sum

JS_FE1723 0.75 1.59 0.49 -0.75 99.00

JS_FE1724 0.54 0.52 0.50 -1.38 98.00

JS_FE1725 0.73 0.91 0.49 -0.01 99.00

	Element/product	Crude ore grade or quality	Reg. date
	Fe	18 %	01.12.1992

From - To	Activity	Comments
1974 - 1975	Geology	Company/Institution :Rana Gruber
1976 - 1976	Geophysics	Company/Institution :Rana Gruber

Era:	Proterozoic	Period:	Neoproterozoic
Genesis:	Sedex	Form:	Layer
Main texture:	Banded	Min. distribution:	Disseminated (<20 % ore minerals)

	Province:	Caledonides
	Geotec.unit:	Helgeland Nappe Complex
	Tectonic complex:	Elsfjord unit
	Igneous complex:

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

Relationship	Rock	Origin
Unknown	Amfibolitt	Extrusive Original rock :Basalt
		Metamorphic facies :Amphibolite
Unknown	Staurolitt gr.gl.sk.	Sedimentary Original rock :Argillaceous sediment
		Metamorphic facies :Amphibolite
Unknown	Karbonat	Extrusive Original rock :Basalt
		Metamorphic facies :Amphibolite

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Unknown	Primary layering	Strike/Dip :220 / 90	Syn-mineralisation ;...Effect :None

	Abstract:
	Rapporten behandler Elsfjord Kisgruve (Flatmogruven) Forekomsten er avdekket med 8 m lang skjæring og mineralisering opptrer som impregnasjon av svovel- og magnetkis i kvartsittisk skifer. Forekomsten ligger i et kisdrag hvor det er kjent flere kismineraliseringer. Videre undersøkelser av gruva og kisdraget er ønsket.

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JS_FE1723	Bedrock	1	17	1	11	11		2.4
JS_FE1724	Bedrock	9	27	2	6	10		1.2
JS_FE1725	Bedrock	2	16	2	11	10		2.4
NO0039.01	Bedrock	16	27	4	-1	23	-.3	62.0
NO0039.02	Bedrock	10	24	3	-1	19	-.3	5.0

Sample No.	Pt#	Pd#	Rh#	As*	Cd*	Ba*	Mo*	Sn*	Sb*
JS_FE1723				1		248	0.40	1
JS_FE1724				2		114	0.80	2
JS_FE1725				1		181	0.50	-1
NO0039.01	-3.0	-3.0	-5.0	40	-.2	8	1.00		-2
NO0039.02	-3.0	-3.0	-5.0	11	-.2	10	-1.00		2

Sample No.	Bi*	Se*	Ga*	S%	V*	Cr*	Mn*	Fe%	Th*
JS_FE1723		-0.50	9.10		90				5.00
JS_FE1724		-0.50	5.30		88				2.40
JS_FE1725		-0.50	7.50		80				4.20
NO0039.01	-2			-.01	53	39	1464	28.80	3.00
NO0039.02	-2			.02	43	26	1353	18.50	2.00

Sample No.	La*	Ce*	Pr*	Nd*	Sm*	Eu*	Gd*	Tb*	Dy*
JS_FE1723	22.80	48.20	5.40	20.50	4.19	0.93	4.10	0.67	4.18
JS_FE1724	14.20	29.50	3.51	14.30	2.97	0.65	2.87	0.48	2.89
JS_FE1725	20.00	41.80	4.86	19.20	3.81	0.87	3.98	0.63	3.87
NO0039.01	9.00
NO0039.02	7.00

Sample No.	Ho*	Er*	Tm*	Yb*	Lu*	B*	Be*	Hf*
JS_FE1723	0.89	2.68	0.40	2.71	0.44		-1	2.30
JS_FE1724	0.62	1.91	0.25	1.80	0.30		2	1.40
JS_FE1725	0.78	2.57	0.36	2.35	0.38		1	2.20
NO0039.01						6
NO0039.02						8

Sample No.	Sample Type	SiO2	Al2O3	TiO2	Fe2O3	MnO	MgO	CaO
JS_FE1723	Bedrock	42.00	6.29	0.51	38.60	0.36	3.38	6.05
JS_FE1724	Bedrock	35.00	3.26	0.29	53.30	0.19	2.24	4.00
JS_FE1725	Bedrock	41.00	5.39	0.39	37.80	0.54	3.10	8.60

Sample No.	Na2O	K2O	P2O5	Loss	Sum
JS_FE1723	0.75	1.59	0.49	-0.75	99.00
JS_FE1724	0.54	0.52	0.50	-1.38	98.00
JS_FE1725	0.73	0.91	0.49	-0.01	99.00