Norsk versjon
THE ORE DATABASE
Occurence 1833 - 092 Langvatn
(Object Id: 2795)
(Last updated: 25.02.2005)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 463082 m. North: 7362647 m.
Longitude: 14.1742430 Latitude: 66.3812270
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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: Test mining Reserves:
Operating method: Open pit and underground mining Historical production: 1 thousand tons


Products
Element/product Crude ore grade or quality Reg. date
Fe 40 % 02.11.1992

Operations
From - To Activity Comments
1801 - 1891 Test mining Company/Institution :Mostadmarken jernverk i Trøndelag
1962 - 1962 Geophysics Company/Institution :NGU
1965 - 1967 Geology Company/Institution :Rana Gruber
1980 - 1980 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: 300 / 15 Direction: 90
Plunge: 10
Stratigraphic classification of host rock
Era: Proterozoic Period: Neoproterozoic
Province: Caledonides
Geotec.unit: Rødingsfjell Nappe Complex
Tectonic complex: Midtre allokton
Igneous complex:
Group: Ørtfjell Formation: Dunderland

Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Apatite Subordinate mineral (1-10%)
Gangue mineral Calcite Subordinate mineral (1-10%)
Gangue mineral Epidote Subordinate mineral (1-10%)
Gangue mineral Amphibole Subordinate mineral (1-10%)
Ore mineral Hematite Major mineral (>10%)
Ore mineral Magnetite Subordinate mineral (1-10%)

Lithology:
Relationship Rock Origin
Unknown Lys glimmerskifer Sedimentary
Original rock :Greywacke
Metamorphic facies :Amphibolite
Unknown Amfibolitt Extrusive
Original rock :Basalt
Metamorphic facies :Amphibolite
Unknown Kalkspat-marmor Sedimentary
Original rock :Limestone
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Unknown Primary layering Strike/Dip :300 / 15 Syn-mineralisation ;...Effect :None

Information(s) in free text format
Free text
Langvatn mt.-hem.-malm De viktigste malmsteder er: M.o.h. UTM-øst-nord Langvatn øvre malmlag 125 4 63 200 - 73 63 050 ----------"---------- 230 4 62 775 - 73 63 150 ----------"---------- 330 4 62 300 - 73 63 250 ----------"---------- 390 4 61 700 - 73 63 450 Langvatn nedre malmlag 50 4 63 150 - 73 62 850 -----------"---------- 100 4 62 800 - 73 62 900 -----------"---------- 260 4 62 150 - 73 63 100 -----------"---------- 300 4 61 750 - 73 63 200 -----------"---------- 325 4 61 500 - 73 63 300 Langvatn nedre malmlag 335 4 61 250 - 73 63 600 -----------"---------- 365 4 60 850 - 73 63 700 Da malmlagene har flatt fall inn mot en steil fjellside, er de lite brytbare i dagbrudd. Malm-tykkelsen er også ujevn 2-4 m,opptil 6 m nede ved Langvatn, bilveiskjæring. I malmhengen finner man stedvis granatfels. Tonnasjen er: Tykkelse Lengde Dyp Tonn (sp.v. 3.5) Langvatn øvre malmlag 3.3 m 1 600 m 40 m 0.74 mill.tonn Langvatn nedre malmlag 2-4 m(3m) 2 500 m 40 m 1.05 mill.tonn Langvatn-malmen er vanligvis kornet hematitt. Malmen har sammensetning (vekt %): 55.7 % hematitt (kornet) 3.3 % magnetitt 24.0 % kvarts 1.0 % oligoklas 1.0 % biotitt 1.0 % muskovitt 1.5 % kloritt 3.0 % hornblende 4.0 % epidot 0.1 % granat 4.0 % kalkspat/dolo. 1.35 % apatitt 0.009 % svovelkis Av erts er(3.3 x 100):(55.7 + 3.3)= 5.6 % magnetitt og 55.7 x 100 :(55.7 + 3.3)= 94.4 % hematitt og forholdet (hematitt) : (magnetitt) = (94.4) : (5.6) = 16.86 Malmen er overveiende en kornet hematitt (0.1-1.5mm hematittkorn) 10 prøver er analysert ved Norsk Jernverk 1980 og viser følgende: Fe tot. Fe magn. MnO TiO2 P S 46.2% 1.6% 0.26% 0.23% 0.19% 0.008% 27.2% 1.1% 0.13% 0.60% 0.11% 0.006% 42.5% 3.5% 0.27% 0.23% 0.19% 0.004% 39.9% 4.6% 0.40% 0.60% 0.51% 0.004% 34.5% 3.1% 0.40% 0.05% 0.10% 0.004% 51.7% 0.3% 0.11% 0.03% 0.20% 0.003% 44.7% 1.6% 0.31% 0.04% 0.21% 0.004% 45.9% 4.0% 0.26% 0.31% 0.56% 0.004% 49.9% 3.8% 0.59% 0.05% 0.28% 0.009% 36.8% 20.6% 0.38% 0.22% 0.20% 0.006% Aritmetrisk middel: 41.9% 2.4% 0.31% 0.24% 0.25% 0.005%

Fieldsamples
Sample No. Sample type Miscellanrous
NO0679.01 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Hm-mt-malm, gj.snittsprøve nedre malmsone.
No. of registrated element analyses = 1
NO0679.02 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Hm-mt-malm, gj.snittsprøve nedre malmsone.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Sample point: Prøvepunkt 1
(Object Id: 4114 92,00,01)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 463132 m. North: 7362847 m.
Longitude: 14.1753020 Latitude: 66.3830270
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Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe


Fieldsamples
Sample No. Sample type Miscellanrous
NO0679.03 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Hm-mt-malm, gj.snittsprøve øvre malmsone.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality: Øvre malmlag (I)
(Object Id: 6909 92,01,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 463132 m. North: 7362847 m.
Longitude: 14.1753020 Latitude: 66.3830270
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: Øvre malmlag (2)
(Object Id: 6910 92,02,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 462707 m. North: 7362947 m.
Longitude: 14.1657670 Latitude: 66.3838730
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: Øvre malmlag (3)
(Object Id: 6911 92,03,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 462232 m. North: 7363047 m.
Longitude: 14.1551120 Latitude: 66.3847130
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: Øvre malmlag (4)
(Object Id: 6912 92,04,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 461632 m. North: 7363247 m.
Longitude: 14.1416300 Latitude: 66.3864340
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: Nedre malmlag (1)
(Object Id: 6913 92,05,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 462732 m. North: 7362697 m.
Longitude: 14.1664000 Latitude: 66.3816340
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: Nedre malmlag (2)
(Object Id: 6914 92,06,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 462082 m. North: 7362897 m.
Longitude: 14.1518030 Latitude: 66.3833490
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: Nedre malmlag (3)
(Object Id: 6915 92,07,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 461682 m. North: 7362997 m.
Longitude: 14.1428250 Latitude: 66.3841970
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: Nedre malmlag (4)
(Object Id: 6916 92,08,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 461432 m. North: 7363097 m.
Longitude: 14.1372030 Latitude: 66.3850640
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: Nedre malmlag (5)
(Object Id: 6917 92,09,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 461182 m. North: 7363397 m.
Longitude: 14.1315170 Latitude: 66.3877240
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: Nedre malmlag (6)
(Object Id: 6918 92,10,00)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 460782 m. North: 7363497 m.
Longitude: 14.1225380 Latitude: 66.3885700
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 - 092 Langvatn

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#
NO0679.01 Bedrock 13 11 -3 2 16 -.3 -2.0
NO0679.02 Bedrock 9 7 -3 -1 11 -.3 4.0
NO0679.03 Bedrock 8 12 -3 -1 13 -.3 2.0
------------------
Sample No. Pt# Pd# Rh# As* Cd* Ba* Mo* Sb* Bi*
NO0679.01 -3.0 -3.0 -5.0 2 1.2 147 2.00 -2 2
NO0679.02 -3.0 -3.0 -5.0 3 1.4 57 2.00 -2 4
NO0679.03 -3.0 -3.0 -5.0 -2 1.5 14 1.00 -2 5
------------------
Sample No. S% V* Cr* Mn* Fe% Th* U* W* Sr*
NO0679.01 -.01 21 12 2410 18.04 -2.00 -5.00 -2 235.0
NO0679.02 .09 15 10 991 20.78 -2.00 -5.00 -2 149.0
NO0679.03 -.01 32 13 1875 26.56 2.00 -5.00 -2 30.0
------------------
Sample No. La* B*
NO0679.01 2.00 -3
NO0679.02 1.00 -3
NO0679.03 5.00 -3

The fact sheet was created on 03.05.2024
Questions or comments regarding the fact sheet can be emailed to:
ressursdatabaser@ngu.no
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