Norsk versjon
THE ORE DATABASE
Occurence 1833 - 093 Bjørnå
(Object Id: 2796)
(Last updated: 01.03.2005)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Storforshei (2027-4) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 465182 m. North: 7367347 m.
Longitude: 14.2199000 Latitude: 66.4236280
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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: Pitting Reserves:
Operating method: Historical production:


Products
Element/product Crude ore grade or quality Reg. date
Fe 39 % 02.11.1992

Operations
From - To Activity Comments
1890 - 1890 Pitting
1962 - 1962 Geophysics Company/Institution :NGU
1965 - 1965 Geology Company/Institution :Rana Gruber
1977 - 1977 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: Fine grained (< 1 mm) Main alteration:
Strike/Dip: 270 / 20 Direction: 90
Plunge: 20
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 Garnet Major mineral (>10%)
Gangue mineral Amphibole Major mineral (>10%)
Ore mineral Hematite Major mineral (>10%)
Ore mineral Magnetite Major mineral (>10%)

Lithology:
Relationship Rock Origin
Unknown Glimmerskifer Sedimentary
Original rock :Greywacke
Metamorphic facies :Amphibolite
Unknown Amfibolitt Extrusive
Original rock :Basalt
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Unknown Primary layering Strike/Dip :270 / 20 Syn-mineralisation ;...Effect :None

Information(s) in free text format
Free text
Bjørnå granat-cummingtonitt-magnetittmalm og mt.-hem.-malm ----------------------------------------------------------- De viktigste malmsteder er: M.o.h. UTM-øst-nord Bjørnå-Dalenghei 80 4 65 550-73 67 550 Bjørnå-Dalenghei 80 4 65 550-73 67 450 Bjørnå 180 4 65 000-73 67 500 Bjørnå 190 4 64 950-73 67 400 Bjørnå 250 4 64 650-73 67 500 Bjørnå 330 4 64 300-73 67 450 Langs en 1 500m lang strøklengde er de totale malm-reserver bare : 1.1 mill.tonn granat-cummingtonitt-magnetittmalm og 0.2 mill.tonn mt.-hem.- malm. Granat-cumm.mt.-malmen danner en linjal-formet 50 m bred og 6-10 m tykk oppsplittet malm-linjal som heller 20 grader mot øst. Diamantboring (5 hull sum 389 m i 1980) 30-130 m nord for malmutgående ga ingen malmsnitt,men 2 X 2.9 = 5.8 mill. tonn ren stink-kalk som kan tas i to 500 m lange, 100-120 m brede og 30-40 m dype dagbrudd med kalk-gehalt: 53.1 % CaO 0.9 % MgO 2.2 % uløst(syreuløst) 0.048 % P 0.06 % S 0.08 % Na2O+K2O Det er analysert 23 prøver granat-cumm. mt.-malm og 2 prøver hem.-malm ved Norsk Jernverk lab. 1978. Jernmalmprøver fra Bjørnå jernmalmfelt: Merk. Fe tot. Fe magn. TiO2 P S 161 28.6% 4.1% 0.17% 0.06% 0.005% 162 19.8% 5.5% 0.03% 0.09% 0.006% Aritm.middel hematittmalm: 24.2% 4.8% 0.10% 0.07% 163 43.6% 21.6% 0.22% 0.26% 0.014% 164A 50.3% 39.7% 0.07% 0.20% 0.014% 164B 34.1% 30.1% 0.30% 0.27% 0.038% 165 47.5% 26.3% 0.08% 0.25% 0.014% 166 37.2% 28.4% 0.05% 0.24% 0.006% 167 34.2% 20.6% 0.05% 0.22% 0.016% 168 42.2% 39.7% 0.08% 0.24% 0.028% 169 26.5% 6.5% 0.54% 0.27% 0.335% 170 45.6% 39.5% 0.23% 0.31% 0.010% 172 37.0% 25.7% 0.29% 0.21% 0.006% 173 45.9% 37.6% 0.30% 0.26% 0.018% 175 46.3% 33.2% 0.13% 0.17% 0.011% 176 39.4% 33.9% 0.10% 0.24% 0.006% 177 32.6% 9.9% 0.33% 0.21% 0.070% 178 37.6% 34.0% 0.09% 0.15% 0.006% 179 42.3% 17.2% 0.10% 0.34% 0.009% 180 33.8% 24.3% 0.17% 0.12% 0.005% 181 33.6% 30.1% 0.17% 0.20% 0.005% 182 39.2% 34.5% 0.27% 0.23% 0.005% 183 38.6% 26.0% 0.06% 0.33% 0.022% 184 41.9% 26.3% 0.19% 0.37% 0.013% 185 47.9% 44.8% 0.11% 0.24% 0.012% 186 34.2% 29.7% 0.13% 0.23% 0.009% Aritm. middel av 23 prøver: 39.6% 28.7% 0.18% 0.24% 0.029%

Fieldsamples
Sample No. Sample type Miscellanrous
NO0681.03 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Granat-cummingtonitt-mt-malm.
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: 4115 93,00,01)
Location
County: Nordland Municipality: Rana (1833)
Map 1:50000: Storforshei (2027-4) Map 1:250000: Mo i Rana
Coordinate system: EU89-UTM Zone 33
East: 465182 m. North: 7367247 m.
Longitude: 14.2199270 Latitude: 66.4227310
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Resource
Resource Type: Ferrous metals(Fe, Mn, Ti) Resource Subtype: Iron
Element(s): Fe


Fieldsamples
Sample No. Sample type Miscellanrous
NO0681.01 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Granat-cummingtonitt-mt-malm.
No. of registrated element analyses = 1
NO0681.02 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Fink. massiv mt.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality: Skjerp 1
(Object Id: 6919 93,01,00)
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: 465482 m. North: 7367247 m.
Longitude: 14.2266480 Latitude: 66.4227650
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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: Skjerp 2
(Object Id: 6920 93,02,00)
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: 465067 m. North: 7367514 m.
Longitude: 14.2172730 Latitude: 66.4251130
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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: Skjerp 3
(Object Id: 6921 93,03,00)
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: 464882 m. North: 7367197 m.
Longitude: 14.2132200 Latitude: 66.4222490
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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: Skjerp 4
(Object Id: 6922 93,04,00)
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: 464582 m. North: 7367297 m.
Longitude: 14.2064720 Latitude: 66.4231120
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: Skjerp 5
(Object Id: 6923 93,05,00)
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: 464232 m. North: 7367247 m.
Longitude: 14.1986450 Latitude: 66.4226240
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 - 093 Bjørnå

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#
NO0681.01 Bedrock 8 5 -3 -1 4 -.3 2.0
NO0681.02 Bedrock 6 11 3 -1 7 -.3 -2.0
NO0681.03 Bedrock 10 10 6 1 9 -.3 -2.0
------------------
Sample No. Pt# Pd# Rh# As* Cd* Ba* Mo* Sb* Bi*
NO0681.01 4.0 -3.0 -5.0 -2 1.6 14 -1.00 -2 5
NO0681.02 -3.0 -3.0 -5.0 -2 2.2 16 2.00 -2 3
NO0681.03 -3.0 -3.0 -5.0 6 3.4 31 2.00 11 42
------------------
Sample No. S% V* Cr* Mn* Fe% Th* U* W* Sr*
NO0681.01 -.01 35 9 919 26.84 2.00 5.00 -2 77.0
NO0681.02 .01 57 20 750 26.59 3.00 -5.00 -2 38.0
NO0681.03 -.01 33 11 419 40.26 2.00 -5.00 -2 51.0
------------------
Sample No. La* B*
NO0681.01 3.00 -3
NO0681.02 9.00 -3
NO0681.03 4.00 -3

The fact sheet was created on 08.05.2024
Questions or comments regarding the fact sheet can be emailed to:
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