Norsk versjon
THE ORE DATABASE
Deposit 5034 - 024 Lillefjell
(Object Id: 61)
(Last updated: 03.05.2023)
Location
County: Trøndelag Municipality: Meråker (5034)
Map 1:50000: Meråker (1721-1) Map 1:250000: Trondheim
Coordinate system: EU89-UTM Zone 32
East: 638634 m. North: 7016481 m.
Longitude: 11.7612760 Latitude: 63.2504850
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Copper
Element(s): Cu Zn Kis
Importance
Raw material meaning: Not Assessed (reg. 18.02.2015)

Resources and production
Activity: Mining Reserves:
Operating method: Underground mining Historical production: 107 thousand tons


Products
Element/product Crude ore grade or quality Reg. date
Cu 5 % 18.11.1993
Zn 4.5 % 18.11.1993

Operations
From - To Activity Comments
1760 - 1895 Regular production Company/Institution :Selbo Kobberverk
1976 Geophysics Company/Institution :NGU
1992 Geophysics Company/Institution :NGU

Mineralization
Era: Paleozoic Period: Ordovician
Genesis: Volcex Form: Plate
Main texture: Structureless Min. distribution: Massive (>50 % ore minerals)
Main grain size: Medium grained (1-3 mm) Main alteration: Chloritisation
Strike/Dip: 5 / 65 Direction: 360
Plunge: 65
Stratigraphic classification of host rock
Era: Paleozoic Period: Ordovician
Province: Caledonides
Geotec.unit: Trondheim Nappe Complex
Tectonic complex: Meråkerdekket
Igneous complex:
Group: Kjølhaug Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Biotite Major mineral (>10%)
Gangue mineral Sericite Major mineral (>10%)
Gangue mineral Chlorite Major mineral (>10%)
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Potassic feldspar Subordinate mineral (1-10%)
Gangue mineral Epidote Accessory mineral (<1%)
Gangue mineral Calcite Accessory mineral (<1%)
Ore mineral Pyrite Major mineral (>10%)
Ore mineral Pyrrhotite Major mineral (>10%)
Ore mineral Sphalerite Subordinate mineral (1-10%)
Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Lithology:
Relationship Rock Origin
Host rock Kvarts-sericittskifer Sedimentary
Original rock :Greywacke
Metamorphic facies :Greenschist
Host rock Metagråvakke Sedimentary
Original rock :Greywacke
Metamorphic facies :Greenschist
Host rock Klorittskifer Sedimentary
Original rock :Greywacke
Metamorphic facies :Greenschist
Wall rock Gabbro Intrusive
Original rock :Gabbro
Wall rock Metagråvakke Sedimentary
Original rock :Greywacke
Metamorphic facies :Greenschist

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Foliation Strike/Dip :5 / 65 Post-mineralisation ;...Effect :Modifies
Host rock Axial plane Strike/Dip :136 / 80 Post-mineralisation ;...Effect :Modifies
Wall rock Foliation Strike/Dip :5 / 65 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format
Free text
The Lillefjell deposit is a stratiform massive sulfide deposit hosted by metagreywacke. A metagabbroic body is also close to the deposit. It was subject to mining between 1760 and 1895, and 107 000 t of ore was produced. The crude ore contained 5 % Cu and 4.5 % Zn.

Fieldsamples
Sample No. Sample type Miscellanrous
HK90-038 Bedrock
Sampler: Karlstrøm, H.
Comment: Semimassiv mineralisering med cp-klyser og sl-rike bånd i en åpen foldeombøyning av gl.sk.
No. of registrated element analyses = 1
HK90-040 Bedrock
Sampler: Karlstrøm, H.
Comment: Massiv fin-middelskornet py-malm med enkelte bånd av sl-rik malm. Lite cpy.
No. of registrated element analyses = 1
HK90-041 Bedrock
Sampler: Karlstrøm, H.
Comment: Massiv py-malm, båndet med vekslende cpy- og sl-rike bånd. Fin-middelskornet.
No. of registrated element analyses = 1
HK90-042 Bedrock
Sampler: Karlstrøm, H.
Comment: Massiv sl-rik py-malm med innesprengninger av q.
No. of registrated element analyses = 1
HK90-043 Bedrock
Sampler: Karlstrøm, H.
Comment: Massiv, fink. båndet py-malm med vekslende cp- og sl-rike bånd. Zn-rik variant.
No. of registrated element analyses = 1
HK90-044 Bedrock
Sampler: Karlstrøm, H.
Comment: Cu- og Zn-rike bånd, varierende mektighet, i sterkt bleket gl.sk.
No. of registrated element analyses = 1
HK90-045 Bedrock
Sampler: Karlstrøm, H.
Comment: Cpy-min. knyttet til q.-seggresjoner i gl.sk.
No. of registrated element analyses = 1
HK90-046S Bedrock
Sampler: Karlstrøm, H.
Comment: Samleprøve.
No. of registrated element analyses = 1
399967 Dump
Sampler: Mindex ASA
Comment: Massive, fine grained, banded Py-SI-Cpy ore.
No. of registrated element analyses = 1
399968 Dump
Sampler: Mindex ASA
Comment: Massive Po-Cpy dominated ore.
No. of registrated element analyses = 1
399969 Dump
Sampler: Mindex ASA
Comment: Massive, fine grained, Py-dominated Py-SI ore with wallrock fragments.
No. of registrated element analyses = 1
399970 Dump
Sampler: Mindex ASA
Comment: Banded quartzite with thin Cpy(-SI-Py) bands
No. of registrated element analyses = 1
399971 Dump
Sampler: Mindex ASA
Comment: Massive, banded Cpy-Py-S1-Po ore
No. of registrated element analyses = 1
399972 Dump
Sampler: Mindex ASA
Comment: Massive, banded Cpy-Py-Po(-SI) ore with chlorite schist fragments.
No. of registrated element analyses = 1
399973 Dump
Sampler: Mindex ASA
Comment: Massive, banded Cpy-Py-Po(-SI) ore with chlorite schist fragments
No. of registrated element analyses = 1
399974 Dump
Sampler: Mindex ASA
Comment: Massive Py-Cpy-SI ore
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: 567 24,00,01)
Location
County: Trøndelag Municipality: Meråker (5034)
Map 1:50000: Meråker (1721-1) Map 1:250000: Trondheim
Coordinate system: EU89-UTM Zone 32
East: 638919 m. North: 7017292 m.
Longitude: 11.7676440 Latitude: 63.2576420
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Copper
Element(s): Cu Zn Kis


Fieldsamples
Sample No. Sample type Miscellanrous
HK90-048 Bedrock
Sampler: Karlstrøm, H.
Comment: Cpy- og sl-rike bånd i bleket gl.sk. i isoklinal foldeombøyning.
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: 415 24,01,00)
Location
County: Trøndelag Municipality: Meråker (5034)
Map 1:50000: Meråker (1721-1) Map 1:250000: Trondheim
Coordinate system: EU89-UTM Zone 32
East: 638719 m. North: 7016292 m.
Longitude: 11.7628070 Latitude: 63.2487550
Show on map
Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Copper
Element(s): Cu Zn Kis
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Fieldsamples
Sample No. Sample type Miscellanrous
HK90-047 Bedrock
Sampler: Karlstrøm, H.
Comment: Tynne bånd og impr. av cpy og po i q.-boudinert gl.sk.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Analyse Results
from
Deposit Area 5034 - 024 Lillefjell

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#
HK90-038 Bedrock 37244 8412 573 56 14 12.8 20.0
HK90-040 Bedrock 13499 42100 887 111 8 9.8 217.0
HK90-041 Bedrock 80081 33572 1520 355 8 29.0 193.0
HK90-042 Bedrock 12936 44459 732 153 14 5.8 101.0
HK90-043 Bedrock 52445 46429 1072 165 8 20.2 233.0
HK90-044 Bedrock 99043 12341 505 75 12 34.4 2542.0
HK90-045 Bedrock 3745 1008 58 6 16 1.5 27.0
HK90-046S Bedrock 36137 23698 733 158 12 13.6 120.0
HK90-047 Bedrock 5696 296 7 27 29 1.3 38.0
HK90-048 Bedrock 44169 19478 487 71 19 15.0 134.0
399967 Dump 11000 175500 5853 232 15 16.3 140.0
399968 Dump 7470 68400 1661 288 31 8.4 45.0
399969 Dump 4951 62200 585 189 18 3.2 87.0
399970 Dump 15500 37700 979 36 17 5.8 37.0
399971 Dump 39200 98400 956 336 16 13.1 434.0
399972 Dump 52700 51600 608 233 27 14.7 177.0
399973 Dump 43900 76200 973 215 11 17.4 266.0
399974 Dump 60900 59600 1099 410 26 20.1 164.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sb* Bi* Ga*
HK90-038 2.0 2.0 29 16.9 52 3.00 7 22
HK90-040 1.0 2.0 86 86.3 6 1.00 2 32
HK90-041 1.0 2.0 179 68.4 8 1.00 2 110
HK90-042 1.0 2.0 72 87.8 7 2.00 2 26
HK90-043 1.0 2.0 161 99.5 7 1.00 2 8
HK90-044 2.0 2.0 46 26.0 32 2.00 2 51
HK90-045 1.0 2.0 4 1.3 19 1.00 5 4
HK90-046S 2.0 2.0 113 44.9 8 1.00 3 42
HK90-047 1.0 2.0 2 1.1 23 1.00 2 2
HK90-048 2.0 3.0 57 40.3 27 2.00 2 30
399967 228 179.7 10 3.00 -5 122 11.00
399968 11 82.6 4 11.00 -5 41 -2.00
399969 186 76.5 8 4.00 -5 14 -2.00
399970 16 59.5 28 3.00 -5 23 2.00
399971 237 119.8 4 6.00 -5 22 2.00
399972 72 66.0 10 6.00 -5 23 -2.00
399973 157 94.2 7 2.00 -5 29 5.00
399974 145 72.0 6 7.00 -5 25 -2.00
------------------
Sample No. S% V* Cr* Mn* Fe% Th* U* W* Sr*
HK90-038 10.30 60 68 724 11.31 9.00 13.00 1 8.0
HK90-040 30.80 14 5 482 21.95 3.00 10.00 1 8.0
HK90-041 31.90 3 1 248 29.11 3.00 12.00 1 1.0
HK90-042 27.20 21 14 372 19.86 1.00 16.00 1 3.0
HK90-043 32.70 1 1 216 23.52 3.00 6.00 1 4.0
HK90-044 23.00 10 1 168 15.38 5.00 5.00 1 2.0
HK90-045 .57 19 21 431 3.56 5.00 14.00 1 4.0
HK90-046S 26.00 21 19 428 24.02 5.00 10.00 1 4.0
HK90-047 2.71 27 51 762 7.88 6.00 5.00 1 5.0
HK90-048 13.30 21 24 341 14.33 4.00 14.00 1 7.0
399967 10 51 778 9.99 2.0
399968 3 34 291 9.99 6.0
399969 11 124 259 9.99 -1.0
399970 27 176 276 5.90 3.0
399971 6 48 402 9.99 -1.0
399972 15 62 299 9.99 1.0
399973 6 45 451 9.99 21.0
399974 7 85 288 9.99 1.0
------------------
Sample No. Y* Zr* Nb* La* B* Li* Sc* Te*
HK90-038 20.00 5
HK90-040 2.00 4
HK90-041 2.00 2
HK90-042 2.00 5
HK90-043 2.00 2
HK90-044 6.00 4
HK90-045 9.00 4
HK90-046S 5.00 2
HK90-047 6.00 4
HK90-048 6.00 2
399967 -1.0 -1 -1.00 1.00 3 -5.00 -10.00
399968 -1.0 -1 -1.00 -1.00 2 -5.00 -10.00
399969 -1.0 -1 -1.00 2.00 2 -5.00 19.00
399970 2.0 1 2.00 3.00 1 -5.00 12.00
399971 -1.0 -1 -1.00 -1.00 2 -5.00 -10.00
399972 -1.0 -1 -1.00 -1.00 2 -5.00 19.00
399973 -1.0 -1 -1.00 -1.00 2 -5.00 -10.00
399974 -1.0 -1 -1.00 -1.00 2 -5.00 19.00

The fact sheet was created on 01.05.2024
Questions or comments regarding the fact sheet can be emailed to:
ressursdatabaser@ngu.no
Copyright © 2024 Geological Survey of Norway