Norsk versjon
	THE ORE DATABASE
	Deposit Area 1833 - 066
	(Last updated 14.feb.2017)

Importance

Public:

Not Assessed (reg. 18.02.2015)

Economical:

Not classified/evaluated

Products

	Element/product	Crude ore grade or quality
	CU	.1 %
	KIS	40 %
	ZN	4 %

Operations

	From - To	Activity	Comments
	1917 - 1917	Pitting
	1976 - 1976	Geophysics
	1981 - 1981	Geology
	1984 - 1984	Geophysics
	1984 - 1984	Core drilling	Company/Institution :BNN A/S
	2007 - 2007	Geophysics	Company/Institution :GEXCO Norge AS
			TEM, magnetometry
	2008 - 2009	Geology	Company/Institution :NGU
			Mapping, sampling

Mineralization

	Era:	Proterozoic	Period:	Neoproterozoic
	Dating:		Method:
	Genesis:	Volcex	Form:	Lens
	Main texture:	Porphyroblastic	Min. distribution:	Semi-massive (20-50 % ore minerals)

Main grain size:

Medium grained (1-3 mm)

Main alteration:

	Strike/Dip:	265 / 85	Direction:	280
			Plunge:	45

Stratigraphic classification of host rock

Era:

Proterozoic

Period:

Neoproterozoic

	Province:	Caledonides
	Geotec.unit:	Rødingsfjell Nappe Complex
	Tectonic complex:	Uppermost Allochthon
	Igneous complex:

Group:

Mofjell Group

Formation:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Quartz	Major mineral (>10%)
	Gangue mineral	Muscovite	Subordinate mineral (1-10%)
	Gangue mineral	Biotite	Subordinate mineral (1-10%)
	Gangue mineral	Plagioclase	Subordinate mineral (1-10%)
	Gangue mineral	Staurolite	Subordinate mineral (1-10%)
	Gangue mineral	Epidote	Accessory mineral (<1%)
	Gangue mineral	Garnet	Accessory mineral (<1%)
	Gangue mineral	Gahnite	Accessory mineral (<1%)
	Ore mineral	Pyrite	Major mineral (>10%)
	Ore mineral	Sphalerite	Major mineral (>10%)
	Ore mineral	Pyrrhotite	Subordinate mineral (1-10%)
	Ore mineral	Galena	Accessory mineral (<1%)
	Ore mineral	Chalcopyrite	Accessory mineral (<1%)

Lithology:

	Relationship	Rock	Origin
	Host rock	Muscovite gneiss	Extrusive
			Metamorphic facies :Amphibolite
	Wall rock	Amphibolite	Extrusive Original rock :Basalt
			Metamorphic facies :Amphibolite
	Wall rock	Qz-fsp gneiss	Extrusive
			Metamorphic facies :Amphibolite

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :265 / 85	Post-mineralisation ;...Effect :Controls
	Host rock	Fold axis	Strike/Dip :280 / 45	Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

The Raudsandhaugtjern, Raudsandhaugen and Raudfjell East mineralizations to the east of Raudvatnet consist of more than 20 small prospects and showings over a strike length of more than 3 km, all situated in the same muscovite gneiss layer. Pyrite is the dominant sulfide, occurring in rich impregnations to thin semi-massive stripes in quartz-sericite schist. Locally the mineralizations reach thicknesses of 3-4 m, but approx. 1 m is more common. Generally the contents of base metals are very low, with Cu+Zn+Pb contents of 0.05-2.2 %. In the main prospects the content of zinc is 1-2 %, and is found as sphalerite, as zinc spinel (gahnite) in 1.2 mm bluish-green crystals and as zinc staurolite in up to cm-sized orange prismatic crystals. The mineralogy observed in thin sections confirms that the mineralizations are dominated by pyrite, while sphalerite and locally chalcopyrite and/or galena occur in accessory amounts. Quartz, muscovite, biotite and plagioclase are the main gangue minerals.

Bibliography:

From NGU's Reference Archive:

Bjerkgård, Terje ; Marker, Mogens ; Slagstad, Trond ; Solli, Arne , 2008

	Mofjell-prosjektet. Statusrapport 2008

;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2008.088;25 s. pages

Abstract:

Rapporten gir en status for Mofjellprosjektet, et 4-årig samarbeidsprosjekt mellom GEXCO Norge AS og NGU. Prosjektområdet er øst og sør for Mo i Rana, et område som kan inneholde økonomiske sulfidforekomster med Cu, Zn, Pb, Ag og Au. Målet er å få fram dette potensialet gjennom å kartlegge berggrunnen, de kjente og delvis drevne sulfidforekomstene og andre mineraliseringer i området. Berggrunnskartleggingen i 2008 har fokusert på den østlige delen av området, som omfatter fortsettelsen av Plurdalgruppen sørover og relasjonen til bergartsgrupper i øst. Dette innbefatter den viktige tidlig Kaledonske skyvestrukturen som kalles Langfjellsonen, som kan representere et malmgeologisk provinsielt skille, med jernmalmene i nord og sulfidforekomstene i sør. Under feltarbeidet ble det systematisk innsamlet 95 bergartsprøver til geokjemi, geokronologi og petrologi for å undersøke bergartenes dannelse som bakgrunn for relasjonen til malmgenese. Malmgeologiarbeidet har i 2008 fokusert på å skaffe oversikt over sulfidforekomster i Mofjellgruppen og en rekke nøkkelforekomster i de forskjellige mineraliserte sonene er kartlagt og prøvetatt. I tillegg har GEXCO innsamlet mange prøver, dels i form av håndstykkeprøver og dels i form av boring med packsack utstyr. Sammen med resultater fra GEXCOs diamantboringer viser arbeidet så langt at en rekke forekomster og soner i området kan være av økonomisk interesse og bør følges opp videre. De mest interessante områdene og forekomstene i Mofjellgruppen som peker seg ut så langt i tillegg til forekomstene i Mofjellet og Sølvberget er Hellerfjellet, Hesjelia-Hammertjønna, Heramb-Bertelberget og Småvatnan. Mer arbeid med dataene, blant annet sammenholdt med data fra tidligere prospekteringsaktivitet i området, er nødvendig for å komme nærmere inn på potensialet i både de ovenfor nevnte forekomstene og andre i området.

Bjerkgård, Terje; Marker, Mogens; Slagstad, Trond; Solli, Arne , 2013

	The Mofjell project: summary and conclusions

;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2013.048;87 pages

Abstract:

The Mofjell project commenced in 2008 as a cooperation between GEXCO Norge AS, the county administration of Nordland and NGU. As GEXCO faced financial difficulties the external funding ended in 2009. The project area included Mofjellet and the eastern part of Plurdalen, an area with a large potential for economic sulfide deposits with Zn, Cu, Pb, Ag and Au. NGU has focused on establishing the geological setting of the Mofjell Group and its relation to ore formation. Another very important goal has been to assess the potential for economic ore deposits in the area, including enrichment of precious metals. On the basis of lithological observations and geochemistry, the Mofjell Group consists of a largely bimodal volcanic-sedimentary assemblage formed in an island-arc to back-arc setting. The data also show that the proportion of felsic volcanic rocks is much higher than previously described. A bimodal volcanic suite mixed with sediments is a geological environment which is regarded as favorable for both rich and large sulfide deposits.

Blichfeldt, H.; Riiber, Carl C. , 1918

	Rødfjeldets kisfelter.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 513;6 pages

Abstract:

Rapporten frembyr forekomsten for salg til Norske Svolkisgruber A/S for kr. 180 000,-. Analyse av to prøver viser henholsvis 46,08 % S og 42,98 % S. Rapportens videre innhold er befaring av feltet med opplysning om geologi og utførte skjerpingsarbeider. Ialt 14 utmål omtales, og i to vises det til analyser, henholdsvis 48,50 % S - 0,12 % Cu og 40,92 % S og 0,24 % Cu. Driften på forekomsten forutsetter bygging av tanbane samt at alle rettigheter samles hos en eier.

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

BNN A/S: Kjerneboringer. Diverse felt i Rana. Sølvberg, Breifonn, Rødvatn V. Heramb-Bertelberg, Hauknestind-Vatna. 1971-1986. BV3345

Marker, M. 1981: Oversigt over malmforekomster (skjerp) nord og øst for Rødvatnet. Upubl. rapp.

Marker, M. 1981: Rødvatn-områdets geologi, Rana, Nordland, med særlig vekt på de strukturgeologiske træk. Upubl. rapp.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	NO0640.02	Bedrock	Sampler :Wilberg, R./...Stored :Løkken Comment :Massiv py-sl-malm. No. of registrated element analyses = 1
	NO0640.03	Bedrock	Sampler :Wilberg, R./...Stored :Løkken Comment :Massiv py-sl-malm. No. of registrated element analyses = 1
	NO0640.04	Bedrock	Sampler :Wilberg, R./...Stored :Løkken Comment :Massiv py-sl-malm. No. of registrated element analyses = 1
	NO0640.10	Core	Sampler :Wilberg, R./...Stored :Løkken Comment :Glimmergneis med py-po-cpy-diss. Bh. 8442 (62,20-66,00m). No. of registrated element analyses = 1
	NO0640.11	Core	Sampler :Wilberg, R./...Stored :Løkken Comment :Glimmergneis med py-po-cpy-diss. Bh. 8442 (55,55-57,05m). No. of registrated element analyses = 1
	RAH-02	Dump	Sampler :T. Bjerkgård/...Stored :Løkken Comment :Massive py with subordinate sl, accessory cpy and ga No. of registrated element analyses = 1
	RAH-03	Dump	Comment :Massive py with accessory sl and crystals of gahnite 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 : 1833,066,01,00)

---

Location

County :

Nordland (18)

Municipality :

Rana (1833)

Map 1:50000:

Storforshei (2027-4)

Map 1:250000:

Mo i Rana

Marking point:

Longitude:

14.5872030

Latitude:

66.2904930

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-coord:

481478 m.

Y-coord:

7352350 m.

Commodity

	Main Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Sub Type:	Zinc
			Element(s):	Kis Zn Pb

Production

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

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :274 / 80	Post-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

Liten røsk med grøft mot nord, ca 8 m lang. Mineralisering består vesentlig av svak pyritt-pyrrhotitt impregnasjon i amfibol-biotitt-kvartsgneiss.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	NO0640.01	Bedrock	Sampler :Wilberg, R./...Stored :Løkken Comment :Granatglimmergneis med bånd av po, py og sl. No. of registrated element analyses = 1
	RAH-01	Dump	Sampler :T. Bjerkgård/...Stored :Løkken Comment :Weak py-po impregnation in amphibole-biotite-quartz gneiss No. of registrated element analyses = 1

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

Name of Locality : Skjerp 3

(Object Id : 1833,066,03,00)

---

Location

County :

Nordland (18)

Municipality :

Rana (1833)

Map 1:50000:

Storforshei (2027-4)

Map 1:250000:

Mo i Rana

Marking point:

Longitude:

14.5839780

Latitude:

66.2905750

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-coord:

481333 m.

Y-coord:

7352361 m.

Commodity

	Main Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Sub Type:	Zinc
			Element(s):	Kis Zn Pb

Production

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

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :110 / 80	Post-mineralisation ;...Effect :Controls
	Host rock	Fold axis	Dir./Plunge :280 / 45	Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

4 m lang, 1 m bred og inntil 1.5 m dyp røsk. Vesentlig pyrittimpregnert kvarts-sericittskifer, dels i semimassive striper. Staurolitt er vanlig i 1-2 mm brune korn.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	NO0640.05	Bedrock	Sampler :Wilberg, R./...Stored :Løkken Comment :Muskovittgneis med bånd av semimassiv py. No. of registrated element analyses = 1
	NO0640.06	Bedrock	Sampler :Wilberg, R./...Stored :Løkken Comment :Muskovittgneis med bånd av semimassiv py. No. of registrated element analyses = 1
	RAH-04	Dump	Sampler :T. Bjerkgård/...Stored :Løkken Comment :Py in rich impregnation in quartz-sericite schist, some staurolite No. of registrated element analyses = 1

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

Name of Locality : Skjerp 4

(Object Id : 1833,066,04,00)

---

Location

County :

Nordland (18)

Municipality :

Rana (1833)

Map 1:50000:

Storforshei (2027-4)

Map 1:250000:

Mo i Rana

Marking point:

Longitude:

14.5807600

Latitude:

66.2905750

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-coord:

481188 m.

Y-coord:

7352361 m.

Commodity

	Main Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Sub Type:	Zinc
			Element(s):	Kis Zn Pb

Production

	Activity:	Pitting	Reserves:
	Prod. method:		Production:
	Prod. status:		Volume of dump:	35 m3

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :249 / 70	Post-mineralisation ;...Effect :Controls
	Host rock	Fold axis	Dir./Plunge :285 / 40	Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Ca 10 m lang, 4 m bred og inntil 4 m dyp skjæring. Mineralisering av tynne striper med impregnasjon til semimassiv pyritt i kvarts-sericittskifer, dels biotittrik. Tett småfoldet. Partier sentralt i skjæringen er nesten ren sericitt med spredte 1-2 mm pyrittkorn.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	NO0640.07	Bedrock	Sampler :Wilberg, R./...Stored :Løkken Comment :Muskovittgneis med py-diss. No. of registrated element analyses = 1
	NO0640.08	Bedrock	Sampler :Wilberg, R./...Stored :Løkken Comment :Granatglimmergneis med litt py-diss. No. of registrated element analyses = 1
	RAH-05	Bedrock	Sampler :T. Bjerkgård/...Stored :Løkken Comment :Py impregnated sericite-dominated schist No. of registrated element analyses = 1

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

Name of Locality : Skjerp 5

(Object Id : 1833,066,05,00)

---

Location

County :

Nordland (18)

Municipality :

Rana (1833)

Map 1:50000:

Storforshei (2027-4)

Map 1:250000:

Mo i Rana

Marking point:

Longitude:

14.5798930

Latitude:

66.2904200

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-coord:

481149 m.

Y-coord:

7352344 m.

Commodity

	Main Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Sub Type:	Zinc
			Element(s):	Kis Zn Pb

Production

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

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :250 / 65	Post-mineralisation ;...Effect :Controls

Information(s) in free text format

Free text

10 m lang og inntil 1 m dyp røskegrøft, 5 m3 tipp. Svak pyrittimpregnasjon i kvarts-sericittskifer. Like nord for røsken båndet med biotittrike lag.

Name of Locality : Skjerp 6

(Object Id : 1833,066,06,00)

---

Location

County :

Nordland (18)

Municipality :

Rana (1833)

Map 1:50000:

Storforshei (2027-4)

Map 1:250000:

Mo i Rana

Marking point:

Longitude:

14.5790450

Latitude:

66.2905080

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-coord:

481111 m.

Y-coord:

7352355 m.

Commodity

	Main Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Sub Type:	Zinc
			Element(s):	Kis Zn Pb

Production

	Activity:	Pitting	Reserves:
	Prod. method:		Production:
	Prod. status:		Volume of dump:	15 m3

Information(s) in free text format

Free text

Seks mindre groper innenfor et område på 20 m (Ø-V) x 30 m (N-S). Lite å se, da gropene er dels gjenrast og overgrodd. Lengst SØ er det blokker med pyritt-impregnert kvarts-sericittskifer, dels i semimassive tynne årer med staurolitt. I de sentrale gropene biotittrik sericittskifer med spredt pyritt.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	NO0640.09	Bedrock	Sampler :Wilberg, R./...Stored :Løkken Comment :Massiv grovkornet py. No. of registrated element analyses = 1
	RAH-06	Dump	Sampler :T. Bjerkgård/...Stored :Løkken Comment :Py impregnated quartz-sericite schist, some staurolite No. of registrated element analyses = 1
	RAH-07	Dump	Sampler :T. Bjerkgård/...Stored :Løkken Comment :Py impregnated biotite-quartz schist No. of registrated element analyses = 1

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

Name of Locality : Skjerp 7

(Object Id : 1833,066,07,00)

---

Location

County :

Nordland (18)

Municipality :

Rana (1833)

Map 1:50000:

Storforshei (2027-4)

Map 1:250000:

Mo i Rana

Marking point:

Longitude:

14.5786670

Latitude:

66.2904980

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-coord:

481095 m.

Y-coord:

7352354 m.

Commodity

	Main Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Sub Type:	Zinc
			Element(s):	Kis Zn Pb

Production

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

Information(s) in free text format

Free text

10 m vest for det sørligste skjerp i 6: 5 m lang gjenrast røsk. 2 m3 tipp. Pyritt-disseminert muskovittgneis.

---

Analyse Results

from

Deposit Area 1833 - 066 Raudsandhaugen

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#
NO0640.01	Bedrock	243	280	1012	23	19	11.3	46.0
NO0640.02	Bedrock	224	29957	2399	10	3	34.9	173.0
NO0640.03	Bedrock	73	43946	4633	26	1	28.0	39.0
NO0640.04	Bedrock	25	18768	2590	15	4	26.6	77.0
NO0640.05	Bedrock	64	1064	99	30	5	9.7	109.0
NO0640.06	Bedrock	41	1393	69	20	4	3.7	61.0
NO0640.07	Bedrock	15	187	78	1	2	1.0	13.0
NO0640.08	Bedrock	88	178	10	9	1	.9	3.0
NO0640.09	Bedrock	22	81	30	25	4	1.9	20.0
NO0640.10	Core	1119	742	124	29	7	3.5	63.0
NO0640.11	Core	714	797	250	29	4	2.1	24.0
RAH-01	Dump	251	522	329	30	23	1.0	-10.0
RAH-02	Dump	155	41500	1820	12	-5	11.0	290.0
RAH-03	Dump	99	3560	112	23	-5	3.0	200.0
RAH-04	Dump	107	2680	106	8	-5	2.0	50.0
RAH-05	Bedrock	27	531	263	3	-5	-1.0	10.0
RAH-06	Dump	56	2910	101	19	-5	1.0	10.0
RAH-07	Dump	102	674	197	20	-5	1.0	10.0

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

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
NO0640.01	1.0	4.0	2	28.8	30	3.00		2	84
NO0640.02	8.0	6.0	9	133.2	1	6.00		2	54
NO0640.03	1.0	1.0	18	187.8	2	7.00		11	80
NO0640.04	1.0	7.0	12	67.2	1	5.00		2	45
NO0640.05	1.0	6.0	20	.2	2	6.00		2	9
NO0640.06	1.0	1.0	19	16.8	2	6.00		2	5
NO0640.07	1.0	2.0	4	.5	44	1.00		2	8
NO0640.08	1.0	5.0	2	.3	94	1.00		2	3
NO0640.09	1.0	2.0	2	.2	5	8.00		2	5
NO0640.10	18.0	20.0	12	4.8	7	3.00		2	2
NO0640.11	6.0	2.0	7	3.6	6	5.00		2	2
RAH-01					719	5.00	4
RAH-02					8	26.00	1
RAH-03					29	22.00	1
RAH-04					385	4.00	5
RAH-05					469	2.00	4
RAH-06					487	7.00	4
RAH-07					424	-2.00	2

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

Sample No.	S%	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*
NO0640.01	4.15	47	12	341	6.91	7.00	5.00	1	5.0
NO0640.02	50.83	9	2	262	18.30	1.00	5.00	118	2.0
NO0640.03	48.66	7	3	347	19.54	3.00	5.00	153	2.0
NO0640.04	50.79	4	2	283	19.50	1.00	5.00	74	2.0
NO0640.05	36.05	1	3	238	19.43	1.00	5.00	3	1.0
NO0640.06	34.30	1	5	216	19.17	1.00	5.00	3	1.0
NO0640.07	1.65	1	9	230	1.94	1.00	5.00	1	2.0
NO0640.08	1.26	24	7	332	3.10	6.00	5.00	1	7.0
NO0640.09	17.76	3	6	208	18.45	2.00	5.00	1	1.0
NO0640.10	10.09	59	9	514	13.31	1.00	5.00	1	2.0
NO0640.11	12.19	28	8	470	14.94	1.00	5.00	1	3.0
RAH-01			30	1626	8.37	4.00	4.00
RAH-02			-10	620	37.70	-1.00	2.00
RAH-03			-10	155	35.65	-1.00	-1.00
RAH-04			10	387	7.53	1.00	1.00
RAH-05			10	852	3.04	3.00	1.00
RAH-06			10	465	12.65	2.00	2.00
RAH-07			10	2246	7.11	8.00	2.00

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

Sample No.	La*	B*
NO0640.01	10.00	7
NO0640.02	2.00	23
NO0640.03	2.00	48
NO0640.04	2.00	20
NO0640.05	2.00	21
NO0640.06	2.00	19
NO0640.07	2.00	2
NO0640.08	2.00	2
NO0640.09	2.00	18
NO0640.10	2.00	2
NO0640.11	4.00	2
RAH-01
RAH-02
RAH-03
RAH-04
RAH-05
RAH-06
RAH-07

---

The fact sheet was created on 22.11.2024

Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no

Copyright © 2024 Geological Survey of Norway