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THE ORE DATABASE
Occurence 1824 - 016 Almåsen
(Object Id: 2834)
(Last updated: 28.04.2020)
Location
County: Nordland Municipality: Vefsn (1824)
Map 1:50000: Fustvatnet (1926-4) Map 1:250000: Mosjøen
Coordinate system: EU89-UTM Zone 33
East: 419868 m. North: 7319252 m.
Longitude: 13.2353820 Latitude: 65.9839910
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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 20 % 22.10.1992

Operations
From - To Activity Comments
1972 - 1972 Geophysics
1978 - 1978 Geology Company/Institution :Rana Gruber

Mineralization
Era: Proterozoic Period: Neoproterozoic
Genesis: Sedex Form: Layer
Main texture: Banded Min. distribution: Semi-massive (20-50 % ore minerals)
Main grain size: Fine grained (< 1 mm) Main alteration:
Strike/Dip: 210 / 85 Direction: 210
Plunge: 20
Stratigraphic classification of host rock
Era: Period:
Province: Caledonides
Geotec.unit: Helgeland Nappe Complex
Tectonic complex: Elsfjord unit
Igneous complex:
Group: Elsfjordgruppen Formation: Jernmalmformasjonen

Mineralogy
Relationship Mineral Amount
Gangue mineral Amphibole Major mineral (>10%)
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Biotite Subordinate mineral (1-10%)
Gangue mineral Carbonate Subordinate mineral (1-10%)
Gangue mineral Apatite Accessory mineral (<1%)
Ore mineral Magnetite Major mineral (>10%)

Lithology:
Relationship Rock Origin
Unknown Karb.-aktinolittba. Extrusive
Original rock :Basalt
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Unknown Primary layering Strike/Dip :210 / 85 Syn-mineralisation ;...Effect :None

Information(s) in free text format
Free text
The Fuglestrand-Rallkatt-Skravlåga-Buktelv iron formation is interpreted to continue southwards to Almåsen, approximately 12 km SSW of Buktelv. The IF is more than 10 m thick and is exposed in the uppermost part of a very steep E-facing hill. It comprises massive to finely banded, fine grained magnetite-hematite mineralisation in a dark green amphibolitic matrix (Sample JS_FE1709-10). The area is not well exposed and only minor outcrops with garnet-mica schist is observed west of the IF.

Fieldsamples
Sample No. Sample type Miscellanrous
JS_FE1709 Bedrock
Sampler: J.S. Sandstad
Comment: Massive magnetite-hematite, finely banded
No. of registrated element analyses = 1
No. of registrated oxide analyses = 1
JS_FE1710 Bedrock
Sampler: J.S. Sandstad
Comment: Magnetite-hematite? dissemination in amphibole-calc schist
No. of registrated element analyses = 1
No. of registrated oxide analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality: Almåsen, S-ende
(Object Id: 3551 16,02,00)
Location
County: Nordland Municipality: Vefsn (1824)
Map 1:50000: Fustvatnet (1926-4) Map 1:250000: Mosjøen
Coordinate system: EU89-UTM Zone 33
East: 419732 m. North: 7319098 m.
Longitude: 13.2324970 Latitude: 65.9825680
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Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Name of Locality: Almåsen, N-ende
(Object Id: 3553 16,03,00)
Location
County: Nordland Municipality: Vefsn (1824)
Map 1:50000: Fustvatnet (1926-4) Map 1:250000: Mosjøen
Coordinate system: EU89-UTM Zone 33
East: 419982 m. North: 7319397 m.
Longitude: 13.2378130 Latitude: 65.9853210
Show on map
Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Name of Locality: 2,5 km NØ Almåsen
(Object Id: 3552 16,04,00)
Location
County: Nordland Municipality: Vefsn (1824)
Map 1:50000: Fustvatnet (1926-4) Map 1:250000: Mosjøen
Coordinate system: EU89-UTM Zone 33
East: 421107 m. North: 7321497 m.
Longitude: 13.2612930 Latitude: 66.0044340
Show on map
Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Analyse Results
from
Deposit Area 1824 - 016 Almåsen

Element analyses
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.)
Sample No. Sample Type Cu* Zn* Pb* Co* Ni* Au# As*
JS_FE1709 Bedrock 4 33 1 11 13 1.1 1
JS_FE1710 Bedrock 31 23 2 23 29 2.1 -1
------------------
Sample No. Ba* Mo* Sn* Se* Ga* V* Th* U* W*
JS_FE1709 190 0.70 -1 -0.50 7.00 110 2.40 0.70 1
JS_FE1710 176 0.30 1 -0.50 8.30 98 4.30 0.70 1
------------------
Sample No. Rb* Sr* Y* Zr* Nb* Ta* Cs* La* Ce*
JS_FE1709 27.1 215.8 22.4 60 5.80 0.20 1.30 17.00 36.40
JS_FE1710 29.8 436.4 22.9 105 11.20 0.80 1.40 21.80 43.80
------------------
Sample No. Pr* Nd* Sm* Eu* Gd* Tb* Dy* Ho* Er*
JS_FE1709 4.45 19.20 3.60 0.80 3.85 0.62 4.05 0.84 2.68
JS_FE1710 5.15 21.00 3.98 0.97 3.76 0.61 3.71 0.80 2.23
------------------
Sample No. Tm* Yb* Lu* Be* Hf*
JS_FE1709 0.36 2.43 0.40 -1 1.40
JS_FE1710 0.34 2.42 0.40 -1 2.70

Oxide analyses
( All values are in % )
Sample No. Sample Type SiO2 Al2O3 TiO2 Fe2O3 MnO MgO CaO
JS_FE1709 Bedrock 24.30 3.41 0.31 63.80 0.22 2.56 3.90
JS_FE1710 Bedrock 35.80 6.59 0.58 38.40 0.61 5.19 8.62
------------------
Sample No. Na2O K2O P2O5 Loss Sum
JS_FE1709 0.57 0.56 0.80 -0.73 100.00
JS_FE1710 0.59 0.69 0.40 2.09 100.00

The fact sheet was created on 24.04.2024
Questions or comments regarding the fact sheet can be emailed to:
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