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THE ORE DATABASE
Occurence 1839 - 002 Lilleålegden
(Object Id: 2675)
(Last updated: 18.10.2021)

Location
County: Nordland Municipality: Beiarn (1839)
Map 1:50000: Arstaddalen (2028-4) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 486013 m. North: 7430346 m.
Longitude: 14.6793510 Latitude: 66.9904040
Show on map

Resource
Resource Type: Ferroalloys (Cr,Ni,Co,V,Mo,W) Resource Subtype: Nickel
Element(s): Ni Cu Co
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

Resources and production
Activity: Test mining Reserves:
Operating method: Open pit mining Historical production: ,685 thousand tons


Operations
From - To Activity Comments
1891 - 1892 Test mining Company/Institution :A/S Christiania Minekompani
1898 - 1898 Pitting Company/Institution : "

Mineralization
Genesis: Orthomagmatic formation Form: Lens
Main texture: Structureless Min. distribution: Massive (>50 % ore minerals)
Main grain size: Fine grained (< 1 mm) Main alteration:
Strike/Dip: 265 / 80 Direction:
Plunge:
Stratigraphic classification of host rock
Era: Paleozoic Period:
Province: Caledonides
Geotec.unit: Rødingsfjell Nappe Complex
Tectonic complex: Øverste allokton
Igneous complex:
Group: Venset group Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Amphibole Major mineral (>10%)
Gangue mineral Pyroxene Subordinate mineral (1-10%)
Gangue mineral Biotite Subordinate mineral (1-10%)
Gangue mineral Quartz Subordinate mineral (1-10%)
Gangue mineral Garnet Accessory mineral (<1%)
Ore mineral Pyrrhotite Major mineral (>10%)
Ore mineral Pentlandite Major mineral (>10%)
Ore mineral Chalcopyrite Major mineral (>10%)
Ore mineral Magnetite Accessory mineral (<1%)

Lithology:
Relationship Rock Origin
Host rock uralittisert noritt Intrusive
Original rock :Norite
Metamorphic facies :Amphibolite
Wall rock glimmerskifer Sedimentary
Original rock :Greywacke
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Wall rock Foliation Strike/Dip :265 / 80 Post-mineralisation ;...Effect :None

Information(s) in free text format
Free text
The deposit (also known as Eiterfjord and Beiarn) was discovered in 1891 and was operated in 1891-1892. The outcrop was re-investigated in 1898. According to Poulsen 1964, the operation has produced 685 tonnes ore with 6-7wt% Ni. The ore was extracted from a 23m long and 3m wide cut. In the middle of the cut, a 4H2m and possibly 33m deep shaft is located, currently filled with water. At 5m E of the cut¿s end, a 15m long trench runs NW across the area. The ore consists of pyrrhotite-pentlandite-chalcopyrite with minor titano-magnetite is located on the (sharp) contact between norite in the hanging wall and garnet bearing mica schist in the footwall. True thickness varies between 0.25-1m, typically 0.3-0.6m. The massive ore has all been extracted. Samples (05-08) contain semi-massive ore were taken from the tailings and are most likely less rich. The lenticular norite body is covered prohibiting an accurate size estimate. The body is hosted by a garnet bearing mica schist and has a maximum thickness of 25m, and probably 10-15m at its widest. The norite is medium grained with finer grains towards its margins. Up to 5m from the ore body, the norite contains ever decreasing amounts of disseminated sulphides, as well as sulphide veins. Samples 01-02 are norite with disseminated sulphide taken at 1m and 4m from the ore body, respectively. The NW running trench mentioned above only contains a thin 2cm band of ore in one wall. Removing vegetation cover by hand reveals that the massive ore only extends 25-30m. The ore body contains a few quartz nodules with pyrrhotite-chalcopyrite dissemination (04). Chalcopyrite is enriched towards the contact with mica schist. The wall of the shaft displays a 10cm wide vein containing massive ore, cutting from the norite SW into the underlaying mica schist. Sample 03 is from a similar discordant sulphide vein in quartz rich mica schist with garnet along the vein contact. Boyd & Nixon 1985 provide data for disseminated ore (0.9wt% Ni, 0.3wt% Cu, 4.25wt% S), and for massive ore (5.5wt% Ni, 0.8wt% Cu, 30.25wt% S).

Bibliography:
From NGU's Reference Archive:
Lindahl, Ingvar , 2003
Zn-Pb forekomstene på Nonsfjellet og Vassheia, Beiarn kommune, Nordland
;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.2003.085;20 pages
Abstract:
Forekomstene på Nonsfjellet og Vassheia har vært kjent i 125 år og har vært undersøkt i flere perioder. Det er drevet noen korte synker for å undersøke forekomstene. De er sink-bly (Zn-Pb) forekomster med et lavt kobberinnhold og lavt innhold av jernsulfider. Mineraliseringene som utgjør forekomstene sitter i opptil de-tykke bånd med massiv malm og i tillegg sulfidimpregnasjoner i tykkere bånd. Sulfidforekomstene ligger i tynne kjemisk utfelte lag (ekshalitter) i en tykk enhet av glimmerskifer (monotone pelittiske båndede sedimenter). Sedimentene i sekvensen har noen steder lag av amfibolitt som kan representere overflatebergarter (ekstrusiver) eller intrusive lagerganger. Sedimentene er isoklinalt foldet, og det har bidratt til å fortykke enheten med båndede sedimenter. Forekomstene på Nonsfjellet og Vassheia er ikke av økonomisk inbteresse. Den massive malmen er i tynne bånd rik, men over brytbar mektighet som inkluderer fattige impregnasjoner, er gehalten lav. Det er et geologisk potensiale for større forekomster knyttet til ekshalittene, men for å lokalisere slike forekomster trengs det omfattende arbeider. Et eventuelt prospekteringsarbeid i området krever kompetanse og store ressurser og bør gjøres av et mineralselskap. Det anbefales ikke at Salten Mineral og Beiarn kommune fortsetter undersøkelsene i feltet etter Zn og Pb.

Vogt , 1892
The geology of the Beiarn-Lode according to a descriptive article given by prof. Vogt of Christiania in his treatise on nickel-lodes and nickel production under the title of "the geologicla examination of Norway".
;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1187;2 pages
Abstract:
Rapporten beskriver en nikkel-kobber-(magnetkistype) malm i kontakter mellom gabbro og gneis.Mektigheten ligger mellom 0,25 og 1 m. Malmmineralogien beskrives kort, sammen med endel analyser på Ni, Co og Cu.

Poulsen, Arthur O. , 1964
Norges gruver og malmforekomster. II. Nord Norge.
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.204;1-101 + 2 pages
Abstract:
The map accompanying this paper shows the mines and ore deposits of Northern Norway (the three northern counties), and forms the second and final part of a work started by the late Steinar Foslie in publishing maps and general descriptions of the mines and ore deposits of our country. The amp contains 834 deposits, the greater part of which is situated in the Nordland mining district (IV on the map). To facilitate the use of the map, the deposits (and mines) are marked with circles of different sizes and colours. This map has, however, only four different sizes (instead of eight on Foslie's map). This present map has, however, five colours instead of the only four previously. The sizes refer only to the presumed importance of the deposits or mines. Mines being worked at the present time (1963) are marked with a white line drawn horizontally through the circle. The mines and the deposits are numbered continually for each of the two mining districts. On the map are drawn the boundaries of the different municipalities (herred) and deposits inside these are numbered in succession. The object of this paper is mainly to give a short summary of the different ore types in relation to the geological fromations, and the distribution of the metals.

Flood, E. , 1941
Preliminær rapport Lille-Leiden nikkelforekomst.
;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 839;3 pages
Abstract:
Lok. Nr. 40358. Rapporten inneholder en presentasjon av Lillo-Leiden nikkelforekomst i Beiarn. Forekomsten ligger i skifer og er utgående i ca 40 m lengde. Sannsynligheten taler for at det er en serie med linser, med en mektighet på 2 - 3 meter med band av god malm med mektighet 1 meter. I liggen er der ca 1- 1,5m impregnasjon. Forekomsten foreslåes belagt med geofysiske målinger.

Puntervold, G. , 1910
Eiterjord nikkelgrube.
;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1426;18 pages
Abstract:
Rapporten er beskrivelse av Eiterjord nikkelgrube og forslag med hensyn til en eventuell ny drift. Rapporten inneholder også kostnadsoverslag for malmtransport og anlegg.

Henriksen, G. , 1897
Eiterjord nikkelgrube, Beiarn.
;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1185;2 pages
Abstract:
Forts. Forekomstens navn og koordinater: Lilleåleiden, Eiterjordet. Det er gjort befaring av Eiterjord nikkelgrube i Beiarn. Malmen forekommer i tilknyttning Gabbro, og består av magnetkis med tilblanding av jernnikkelkis. Gabbroforekomsten synes liten. Undersøker man i dagen langs gabbrogrensen eller i grubens vestlige dypparti og finner mere malm, vil det være gunstig å bryte. Malmen har høy nikkelgehalt.

Borthen, E.; Rosenlund, A. L. , 1916
Eiterjordens nikkelgrube, Beiarn.
;Norges geologiske undersøkelse;TEKNISK RAPPORT;Bergarkivet; No.BA 1184;9 pages
Abstract:
Forts. Forekomstens navn og koordinater: Lilleåleiden, Eiterjordet. Rapporten omtaler Eiterjordet nikkelgrube og inneholder historikk, transportforhold, geologi, beskrivelse av gruben, forslag til drift samt kostnadsoverslag og analyser av malmen.

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

Fieldsamples
Sample No. Sample type Miscellanrous
NO0550.01 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Gabbro med diss. po, cpy + ptl.
No. of registrated element analyses = 1
NO0550.02 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Gabbro med diss. po, cpy + ptl.
No. of registrated element analyses = 1
NO0550.03 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Kv.rik gl.sk. med sulfidåre.
No. of registrated element analyses = 1
NO0550.04 Dump
Sampler: Wilberg, R./...Stored: Løkken
Comment: Kvarts med po-cpy-diss.
No. of registrated element analyses = 1
NO0550.05 Dump
Sampler: Wilberg, R./...Stored: Løkken
Comment: Gabbro med semimassiv po, ptl og cpy.
No. of registrated element analyses = 1
NO0550.06 Dump
Sampler: Wilberg, R./...Stored: Løkken
Comment: Gabbro med semimassiv po, ptl og cpy.
No. of registrated element analyses = 1
NO0550.07 Dump
Sampler: Wilberg, R./...Stored: Løkken
Comment: Gabbro med semimassiv po, ptl og cpy.
No. of registrated element analyses = 1
NO0550.08 Dump
Sampler: Wilberg, R./...Stored: Løkken
Comment: Gabbro med semimassiv po, ptl og cpy (cpy-rik).
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:


Analyse Results
from
Deposit Area 1839 - 002 Lilleålegden

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#
NO0550.01 Bedrock 2752 36 52 88 2994 2.7 46.0
NO0550.02 Bedrock 59 10 19 18 215 .1 1.0
NO0550.03 Bedrock 14775 103 51 223 7291 3.8 207.0
NO0550.04 Dump 119 1 9 16 685 .1 1.0
NO0550.05 Dump 21169 37 16 611 24509 3.4 19.0
NO0550.06 Dump 2649 38 24 473 22584 .6 12.0
NO0550.07 Dump 19089 44 25 424 20031 5.3 25.0
NO0550.08 Dump 58529 117 34 281 8540 14.5 44.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sb* Bi* S%
NO0550.01 16.0 18.0 194 .6 47 1.00 2 2 1.67
NO0550.02 3.0 3.0 7 .2 79 1.00 2 2 .07
NO0550.03 19.0 94.0 12 .2 21 1.00 2 2 6.02
NO0550.04 3.0 3.0 15 .2 7 1.00 2 2 .47
NO0550.05 141.0 49.0 35 .2 16 1.00 7 2 12.59
NO0550.06 16.0 25.0 29 .2 13 1.00 2 6 12.68
NO0550.07 26.0 60.0 2 .2 11 1.00 2 2 13.85
NO0550.08 124.0 163.0 6 .5 6 1.00 2 2 13.04
------------------
Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*
NO0550.01 17 92 58 2.76 2.00 5.00 1 29.0 2.00
NO0550.02 23 131 61 1.23 2.00 5.00 1 10.0 3.00
NO0550.03 18 17 559 11.13 6.00 5.00 1 67.0 14.00
NO0550.04 2 7 13 .93 2.00 5.00 1 1.0 2.00
NO0550.05 29 221 196 13.90 2.00 5.00 1 59.0 2.00
NO0550.06 22 167 153 16.17 2.00 5.00 1 124.0 2.00
NO0550.07 9 246 55 16.15 2.00 5.00 1 12.0 2.00
NO0550.08 5 126 55 13.53 3.00 5.00 1 9.0 5.00
------------------
Sample No. B*
NO0550.01 3
NO0550.02 10
NO0550.03 2
NO0550.04 7
NO0550.05 2
NO0550.06 2
NO0550.07 2
NO0550.08 2


The fact sheet was created on 18.10.2021

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