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THE ORE DATABASE
Occurence 1833 - 039 Maruliden - Spruthøla
(Object Id: 2717)
(Last updated: 07.02.2024)
Belongs to the Province: Dunderlandsdalen jern
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Dunderlandsdal (2027-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 490982 m. North: 7370397 m.
Longitude: 14.7977330 Latitude: 66.4528060
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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:


Products
Element/product Crude ore grade or quality Reg. date
Fe 37 % 03.11.1992

Operations
From - To Activity Comments
1973 - 1981 Geology Company/Institution :Rana Gruber

Mineralization
Era: Proterozoic Period: Neoproterozoic
Genesis: Sedex Form: Layer
Main texture: Banded Min. distribution: Massive (>50 % ore minerals)
Main grain size: Medium grained (1-3 mm) Main alteration:
Strike/Dip: 230 / 85 Direction: 240
Plunge: 25
Stratigraphic classification of host rock
Era: Proterozoic Period: Neoproterozoic
Province: Caledonides
Geotec.unit: Rødingsfjell Nappe Complex
Tectonic complex: Midtre allokton
Igneous complex:
Group: Ørtfjellgruppen Formation: Dunderland

Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Apatite Subordinate mineral (1-10%)
Gangue mineral Chlorite Subordinate mineral (1-10%)
Gangue mineral Amphibole Subordinate mineral (1-10%)
Gangue mineral Calcite Subordinate mineral (1-10%)
Gangue mineral Epidote Subordinate mineral (1-10%)
Gangue mineral Muscovite Subordinate mineral (1-10%)
Gangue mineral Biotite Subordinate mineral (1-10%)
Gangue mineral Potassic feldspar Subordinate mineral (1-10%)
Gangue mineral Dolomite Subordinate mineral (1-10%)
Ore mineral Hematite Major mineral (>10%)
Ore mineral Magnetite Major mineral (>10%)

Lithology:
Relationship Rock Origin
Unknown Karb.glimmersk. Sedimentary
Original rock :Argillaceous sediment
Metamorphic facies :Amphibolite
Unknown Lys glimmerskifer Sedimentary
Original rock :Greywacke
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Unknown Primary layering Strike/Dip :230 / 85 Syn-mineralisation ;...Effect :None

Information(s) in free text format
Free text
Maruliden - Spruthøla hem.-mt.-malm. ------------------------------------ De viktigste malmsteder er: UTM - øst UTM - nord ----------------------------------------------------- Spruthøla 491200 7370700 Spruthøla 491050 7370600 400 m SV for Spruthøla 490850 7370300 900 m SV for Svarttjønn 489050 7370750 Tonnasjen er: m.o.h Tykkelse Lengde Dyp Tonnasje (Sp.v.3,5) ----------------------------------------------------- Spruthøla 525 2-5m(3,5m) 300m 50m 183750 tonn 400 m SV for Spruthøla 530 0,5-1m(0,7m) 100m 50m 12250 tonn 900 m SV for Svarttj. 480 10 m 100m 50m 175000 tonn --------------- Sum 371000 tonn Malmen er høy i Fe-magn., og fører minst 37 % Fe-total. Malmtypen er oftest grovkornet magnetitt.

Bibliography:
From NGU's Reference Archive:
Søvegjarto, Ulrik , 1972
Berggrunngeologiske Undersøkelser i Dunderlandsdalen, Nordland.
;UiO Geologisk fellesråd;AVHANDLING

Fieldsamples
Sample No. Sample type Miscellanrous
Rana-6 Bedrock
Sampler: Bjerkgård/Raaness/...Stored: Løkken
Comment: Hematittmalm
No. of registrated oxide analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality: Spruthøla
(Object Id: 6890 39,01,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Dunderlandsdal (2027-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 491132 m. North: 7370497 m.
Longitude: 14.8010910 Latitude: 66.4537070
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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:


Name of Locality: Spruthøla SV
(Object Id: 6891 39,02,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Dunderlandsdal (2027-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 490782 m. North: 7370547 m.
Longitude: 14.7932350 Latitude: 66.4541460
Show on map
Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe
Resources and production
Activity: Exploration Reserves:
Operating method: Historical production:


Name of Locality: Svarttjønn SV
(Object Id: 6892 39,03,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Dunderlandsdal (2027-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 488982 m. North: 7370547 m.
Longitude: 14.7528580 Latitude: 66.4540880
Show on map
Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe
Resources and production
Activity: Exploration Reserves:
Operating method: Historical production:


Analyse Results
from
Deposit Area 1833 - 039 Maruliden - Spruthøla

Oxide analyses
( All values are in % )
Sample No. Sample Type SiO2 Al2O3 TiO2 Fe2O3 MnO MgO CaO
Rana-6 Bedrock 37.18 1.43 0.12 52.56 0.23 1.18 3.48
------------------
Sample No. Na2O K2O P2O5 Loss Sum
Rana-6 -0.01 0.16 0.41 3.41 100.00

The fact sheet was created on 29.04.2024
Questions or comments regarding the fact sheet can be emailed to:
ressursdatabaser@ngu.no
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