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THE ORE DATABASE
Deposit Area 1833 - 039
(Last updated 07.feb.2024)

Name of Deposit Area : Maruliden - Spruthøla
(Object Id : 1833,039,00,00)
The deposit area belongs to the Province : Dunderlandsdalen jern
Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Dunderlandsdal (2027-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.7977330 Latitude: 66.4528060
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 490982 m. Y-coord: 7370397 m.
Commodity
Main Type: Ferrous metals(Fe, Mn, Ti) Sub Type: Iron
Element(s): Fe
Production
Activity: Exploration Reserves:
Prod. method: Production:
Prod. status: Volume of dump:

Importance
Public: Little Importance (reg. 18.02.2015)
Economical: Minor interest , (Confirmed 25.feb.2005 by Agnes Raaness)

Products
Element/product Crude ore grade or quality
FE 37 %

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

Mineralization
Era: Proterozoic Period: Neoproterozoic
Dating: Method:
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 : 1833,039,01,00)
Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Dunderlandsdal (2027-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.8010910 Latitude: 66.4537070
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 491132 m. Y-coord: 7370497 m.
Commodity
Main Type: Ferrous metals(Fe, Mn, Ti) Sub Type: Iron
Element(s): Fe
Production
Activity: Exploration Reserves:
Prod. method: Production:
Prod. status: Volume of dump:


Name of Locality : Spruthøla SV
(Object Id : 1833,039,02,00)
Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Dunderlandsdal (2027-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.7932350 Latitude: 66.4541460
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 490782 m. Y-coord: 7370547 m.
Commodity
Main Type: Ferrous metals(Fe, Mn, Ti) Sub Type: Iron
Element(s): Fe
Production
Activity: Exploration Reserves:
Prod. method: Production:
Prod. status: Volume of dump:


Name of Locality : Svarttjønn SV
(Object Id : 1833,039,03,00)
Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Dunderlandsdal (2027-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.7528580 Latitude: 66.4540880
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 488982 m. Y-coord: 7370547 m.
Commodity
Main Type: Ferrous metals(Fe, Mn, Ti) Sub Type: Iron
Element(s): Fe
Production
Activity: Exploration Reserves:
Prod. method: Production:
Prod. status: Volume of dump:


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 25.11.2024
Questions or comments regarding the fact sheet can be emailed to:
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