Norsk versjon
THE ORE DATABASE
Deposit Area 1833 - 092
(Last updated 25.feb.2005)

Name of Deposit Area : Langvatn
(Object Id : 1833,092,00,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1742430 Latitude: 66.3812270
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 463082 m. Y-coord: 7362647 m.

Commodity
Main Type: Ferrous metals(Fe, Mn, Ti) Sub Type: Iron
Element(s): Fe
Production
Activity: Test mining Reserves:
Prod. method: Open pit and underground mining Production: 1 thousand tons
Prod. status: Disused, closed Volume of dump: 200 m3

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 40 %

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
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: 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 : 1833,092,00,01)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1753020 Latitude: 66.3830270
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 463132 m. Y-coord: 7362847 m.

Commodity
Main Type: Ferrous metals(Fe, Mn, Ti) Sub Type: 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 : 1833,092,01,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1753020 Latitude: 66.3830270
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 463132 m. Y-coord: 7362847 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 : Øvre malmlag (2)
(Object Id : 1833,092,02,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1657670 Latitude: 66.3838730
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 462707 m. Y-coord: 7362947 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 : Øvre malmlag (3)
(Object Id : 1833,092,03,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1551120 Latitude: 66.3847130
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 462232 m. Y-coord: 7363047 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 : Øvre malmlag (4)
(Object Id : 1833,092,04,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1416300 Latitude: 66.3864340
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 461632 m. Y-coord: 7363247 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 : Nedre malmlag (1)
(Object Id : 1833,092,05,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1664000 Latitude: 66.3816340
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 462732 m. Y-coord: 7362697 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 : Nedre malmlag (2)
(Object Id : 1833,092,06,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1518030 Latitude: 66.3833490
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 462082 m. Y-coord: 7362897 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 : Nedre malmlag (3)
(Object Id : 1833,092,07,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1428250 Latitude: 66.3841970
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 461682 m. Y-coord: 7362997 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 : Nedre malmlag (4)
(Object Id : 1833,092,08,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1372030 Latitude: 66.3850640
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 461432 m. Y-coord: 7363097 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 : Nedre malmlag (5)
(Object Id : 1833,092,09,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1315170 Latitude: 66.3877240
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 461182 m. Y-coord: 7363397 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 : Nedre malmlag (6)
(Object Id : 1833,092,10,00)

Location
County : Nordland (18) Municipality : Rana (1833)
Map 1:50000: Mo i Rana (1927-1) Map 1:250000: Mo i Rana
Marking point: Longitude: 14.1225380 Latitude: 66.3885700
EU89-UTM Zone 33 (Coordinates IS confirmed)
X-coord: 460782 m. Y-coord: 7363497 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 - 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 22.11.2024

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