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Occurence 1833 - 063 Malmhaug Pb-Zn
(Object Id: 2753)
(Last updated: 08.02.2000)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Storforshei (2027-4) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 479252 m. North: 7356377 m.
Longitude: 14.5369470 Latitude: 66.3264750
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Lead
Element(s): Pb Zn Cu
Importance
Raw material meaning: Not Assessed (reg. 18.02.2015)

Resources and production
Activity: Pitting Reserves:
Operating method: Historical production: ,01 thousand tons


Operations
From - To Activity Comments
1939 - 1939 Geophysics
1951 - 1951 Geophysics
1957 - 1957 Core drilling
1976 - 1976 Geophysics
1977 - 1977 Geology

Mineralization
Genesis: Hydrothermal vein Form: Irregular
Main texture: Vein network Min. distribution: Massive (>50 % ore minerals)
Main grain size: Coarse grained (> 3 mm) Main alteration: Silicification
Strike/Dip: 110 / 35 Direction: 245
Plunge: 35
Stratigraphic classification of host rock
Era: Period:
Province: Caledonides
Geotec.unit: Rødingsfjell Nappe Complex
Tectonic complex: Øverste allokton
Igneous complex:
Group: Plurdalsgruppen Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Calcite Major mineral (>10%)
Gangue mineral Muscovite Subordinate mineral (1-10%)
Gangue mineral Quartz Subordinate mineral (1-10%)
Ore mineral Sphalerite Major mineral (>10%)
Ore mineral Pyrite Major mineral (>10%)
Ore mineral Galena Major mineral (>10%)
Ore mineral Chalcopyrite Accessory mineral (<1%)
Ore mineral Stannite Accessory mineral (<1%)
Ore mineral Arsenopyrite Accessory mineral (<1%)
Ore mineral Pyrrhotite Accessory mineral (<1%)
Ore mineral Malachite Accessory mineral (<1%)

Lithology:
Relationship Rock Origin
Host rock Kalkspatmarmor Sedimentary
Original rock :Limestone
Metamorphic facies :Amphibolite
Wall rock Kvartskeratofyr Extrusive
Original rock :Rhyolite
450 (-10\+10) mill. years;..Method:Rb/Sr
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Foliation Strike/Dip :110 / 35 Post-mineralisation ;...Effect :Modifies
Host rock Primary layering Strike/Dip :110 / 35 Pre-mineralisation ;...Effect :Controls
Host rock Fold axis Strike/Dip :245 / 35 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format
Free text
Mineraliseringen ble skjerpet ca. 1905. Den opptrer i tilnærmet samme horisont som Malmhaug gruve, i kontaktsonen mellom kvartskeratofyr i liggen og uren kalkspatmarmor, ca. 600 m SØ for kisforekomsten. Det er røsket på 7 steder langs den 250 m lange mineraliseringen. I den vestlige delen er det massiv malm med mektighet opptil 30 cm, mens det i øst er impregnasjon og massive årer i marmoren over opptil 4 m mektighet. Grensen til sideberget er skarp, og årene har liten innblanding av gangmineraler. Årene skjærer foliasjonen, men opptrer alltid i samme nivå. De diskordante forholdet er tydelig lokalt - smale årer skjærer inn i marmoren. Malmen består av opptil 5 mm store svovelkiskuber i en grunnmasse av sinkblende og blyglans (prøve 01-04). Aksessorisk opptrer magnetkis, kobberkis, arsenkis og stanitt. Ved UTM 479320 7356580 er det en 2 m dyp synk (hovedskjerpet). Mektigheten på mineraliseringen er ca. 40 cm, dog med endel marmor innblandet. Et lite skjerp ligger 10 m mot øst (skjerp 1). Skjerp 2, UTM 479420 7356560: 4 m mektig impregnasjonsmalm med cm-mektige sulfidårer er avdekket i en røsk. I tillegg til nevnte mineraler opptrer også noe malakitt. Skjerp 3, UTM 479250 7356600: Lite skjerp. 20 cm mektig massivmalm. 10 m mot øst er det et lite overgrodd skjerp (skjerp 4), mens 40 m mot vest avdekker en røsk (skjerp 5) en malmmektighet på 20 cm massivmalm. Tilsammen er tippvolumet ca. 30 m3. Analyse fra forekomsten viser en Ag-gehalt på 150 ppm. Au er ikke detektert (Karlstrøm 1990).

Bibliography:
From NGU's Reference Archive:
Vik, E. , 1978
Geologiske undersøkelser ved Malmhaug kisforekomst og bly-sink skjerp.
;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.1556/10B;20 pages
Abstract:
Malmhaug kisforekomst og bly-sink skjerp ble undersøkt for å finne sammenhengen mellom bly-sink mineraliseringene og kismalmen, og for å øke kjennskapen til malmene i Rana-distriktet. Et område på ca. 3 km² rundt malmene er kartlagt i målestokk 1:5 000 og prøver av mineraliseringene er undersøkt mineralogisk og geokjemisk. Kis- malmen ligger stratiformt i overgangssonen mellom en lys gneis, trolig en sur vulkanitt, og en kalkrik serie. Bly-sink mineraliseringene er svært små og finnes på sprekker i dolomitt, like over det mineraliserte nivået, men utenfor det egentlige gruveområdet og uten sammenheng med kismalmen.

Torgersen, J.C. , 1928
Sink- og blyforekomster på Helgeland.
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.131;1-79 pages
Abstract:
The deposits described in this paper are situated in the large section of Northern Norway, generally called Helgeland, some in the districts of Rana and Vefsn, others in the districts (herreder) Leirfjord and Tjøtta in the Nordland county. The deposits occur in metamorphic rocks of Cambro-Silurian age and in the neighbourhood of acid plutonic rocks belonging to the igneous series of the Caledonian mountain range. These igneous rocks generally consist of light coloured granites, and the accompanying intrusive sheets are white and often very siliceous with few dark minerals. The ore forms intrusive sheets or impregnations in the metamorphic rocks. The ore minerals are zinkblende and galena, the latter sometimes being argentiferous. They are accompanied by pyrrhotite and pyrite, sometimes also by arsenopyrite They always form complex ores the utilization of which was formerly difficult but is now made possible through the application of the modern methods of selective flotation. Zinkblende is the prevailing ore mineral. The amount of galena is rather variable, but its distribution in the occurrences is only imperfectly known. Also the amounts of accompanying pyritic minerals are variable.

References not to be found in NGU's Reference Archive.:
Spross, E. 1956: Bericht über die Untersuchungsarbeiten im Sommer 1956. Upubl. rapp.


Karlstrøm, H.J. 1990: Edelmetaller i norske kaledonske sulfidforekomster. BVLs industrigruppe. Teknisk rapp. nr. 77.


Gjelsvik, T. 1958: Rapport om diamantboringer, Malmhaug, Nord-Rana.

Fieldsamples
Sample No. Sample type Miscellanrous
NO0633.01 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Massiv ga-sl-py-malm.
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: 3320 63,01,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Storforshei (2027-4) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 479262 m. North: 7356377 m.
Longitude: 14.5371700 Latitude: 66.3264760
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Lead
Element(s): Zn Pb Cu
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Information(s) in free text format
Free text
Et lite skjerp ligger 10 m mot øst (skjerp 1) fra hovedskjerpet.

Name of Locality: Skjerp 2
(Object Id: 3324 63,02,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Storforshei (2027-4) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 479352 m. North: 7356357 m.
Longitude: 14.5391820 Latitude: 66.3263020
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Lead
Element(s): Zn Pb Cu
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Information(s) in free text format
Free text
4 m mektig impregnasjonsmalm med cm-mektige sulfidårer er avdekket i en røsk. I tillegg til nevnte mineraler opptrer også noe malakitt.

Fieldsamples
Sample No. Sample type Miscellanrous
NO0633.04 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Massiv ga-sl-cpy-åre i kvartsitt.
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: 3321 63,03,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Storforshei (2027-4) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 479182 m. North: 7356397 m.
Longitude: 14.5353820 Latitude: 66.3266500
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Lead
Element(s): Zn Pb Cu
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Information(s) in free text format
Free text
Lite skjerp. 20 cm mektig massivmalm.

Fieldsamples
Sample No. Sample type Miscellanrous
NO0633.02 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Massiv ga-sl-py-malm.
No. of registrated element analyses = 1
NO0633.03 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Massiv ga-sl-py-malm.
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: 3323 63,04,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Storforshei (2027-4) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 479192 m. North: 7356397 m.
Longitude: 14.5356050 Latitude: 66.3266510
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Lead
Element(s): Zn Pb Cu
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Information(s) in free text format
Free text
10 m mot øst (fra skjerp 4) er det et lite overgrodd skjerp (skjerp 4), mens 40 m mot vest avdekker en røsk (skjerp 5) en malmmektighet på 20 cm massivmalm.

Name of Locality: Skjerp 5
(Object Id: 3322 63,05,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Storforshei (2027-4) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 479142 m. North: 7356397 m.
Longitude: 14.5344890 Latitude: 66.3266470
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Lead
Element(s): Zn Pb Cu
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Information(s) in free text format
Free text
10 m mot øst (fra skjerp 4) er det et lite overgrodd skjerp (skjerp 4), mens 40 m mot vest avdekker en røsk (skjerp 5) en malmmektighet på 20 cm massivmalm.

Analyse Results
from
Deposit Area 1833 - 063 Malmhaug Pb-Zn

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#
NO0633.01 Bedrock 104 99999 32095 8 3 107.6 95.0
NO0633.02 Bedrock 14223 99999 24580 7 6 74.6 58.0
NO0633.03 Bedrock 4183 99999 31594 9 6 86.0 39.0
NO0633.04 Bedrock 14533 2078 27589 1 2 266.5 1588.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sb* Bi* S%
NO0633.01 1.0 2.0 531 268.9 3 6.00 274 33 26.30
NO0633.02 1.0 3.0 547 224.3 4 5.00 99 158 32.96
NO0633.03 1.0 3.0 582 341.0 2 5.00 120 200 33.08
NO0633.04 3.0 2.0 6610 39.6 3 1.00 2566 802 2.02
------------------
Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*
NO0633.01 2 5 3977 25.42 8.00 5.00 1 14.0 3.00
NO0633.02 1 4 3000 32.30 7.00 5.00 1 8.0 3.00
NO0633.03 2 4 4058 31.27 8.00 5.00 1 9.0 3.00
NO0633.04 2 1 2797 1.87 1.00 5.00 7 61.0 2.00
------------------
Sample No. B*
NO0633.01 59
NO0633.02 54
NO0633.03 66
NO0633.04 2

The fact sheet was created on 05.05.2024
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