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THE ORE DATABASE
Deposit Area 2017 - 023
(Last updated 19.jan.2022)

Name of Deposit Area : Bachkes gruve
(Object Id : 2017,023,00,00)

Location
County : Finnmark (20) Municipality : Kvalsund (2017)
Map 1:50000: Vargsund (1935-4) Map 1:250000: Hammerfest
Marking point: Longitude: 23.7271700 Latitude: 70.4057880
EU89-UTM Zone 34 (Coordinates IS confirmed)
X-coord: 602042 m. Y-coord: 7813415 m.

Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper
Element(s): Cu Fe U
Production
Activity: Mining Reserves: 19 thousand tons
Prod. method: Underground mining Production: 11 thousand tons
Prod. status: Disused, closed Volume of dump: 1000 m3

Importance
Public: Little Importance (reg. 18.02.2015)
Economical: Minor interest , (Confirmed 03.feb.2005 by Peter Ihlen)

Products
Element/product Crude ore grade or quality
CU 1.95 %

Operations
From - To Activity Comments
1900 - 1903 Regular production Company/Institution :Vesterdalens Grubeselskap
1903 - 1903 Regular production Company/Institution :Kaafjord Kobberverk
1904 - 1906 Regular production Company/Institution :Vesterdalen Kobbergruver
1926 - 1927 Core drilling Company/Institution :A/S Porsa Kobbergruver
1928 - 1928 Test mining Company/Institution :A/S Porsa Kobbergruver
1929 - 1931 Regular production Company/Institution :A/S Porsa Kobbergruver

Mineralization
Era: Proterozoic Period: Paleoproterozoic
Dating: 0 million year Method:
Genesis: Hydrothermal vein Form: Plate
Main texture: Porphyroblastic Min. distribution: Irregular (scattered)
Main grain size: Very unevenly grained Main alteration: No country rock alteration
Strike/Dip: 140 / 80 Direction:
Plunge:
Stratigraphic classification of host rock
Era: Proterozoic Period: Paleoproterozoic
Province: Caledonian Basement Province
Geotec.unit: Komagfjord-Repparfjord Greenstone Belt
Tectonic complex:
Igneous complex:
Group: Nussir Formation: Svartfjell

Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Calcite Major mineral (>10%)
Gangue mineral Chlorite Subordinate mineral (1-10%)
Gangue mineral Hornblende Subordinate mineral (1-10%)
Gangue mineral Muscovite Subordinate mineral (1-10%)
Gangue mineral Feldspar Subordinate mineral (1-10%)
Ore mineral Chalcopyrite Major mineral (>10%)
Ore mineral Pyrite Major mineral (>10%)
Ore mineral Hematite Subordinate mineral (1-10%)
Ore mineral Magnetite Subordinate mineral (1-10%)
Ore mineral Uraninite Accessory mineral (<1%)

Lithology:
Relationship Rock Origin
Host rock Grønnstein Extrusive
Original rock :Basalt
Metamorphic facies :Greenschist

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Wall rock Joints/Fractures Strike/Dip :330 / 90 Pre-mineralisation ;...Effect :Controls

Information(s) in free text format
Free text
The Bachke deposit was discovered in 1900 and mining was carried out periodically by several companies until 1931. Mining exploited four parallel quartz-carbonate veins that are up to 100 m long and 1–1.5 m thick. The veins are hosted by greenstones of the Nussir Group and have a NW strike and a variable but generally steep dip. The main sulphide minerals are chalcopyrite and pyrite, and magnetite and haematite occur in subordinate amounts. Uraninite is an accessory mineral in crosscutting veinlets. The vein matrix is composed of quartz, calcite, albite, chlorite and wall rock fragments.

Bibliography:
From NGU's Reference Archive:
Geis, H.P. , 1967
Porsa Grube Kvalsund, Finnmark.
;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 6618;1 pages
Abstract:
Rapporten konkluderer med at man anser A/S Porsa konsesjonsområde ikke drivverdig, - og Elkem - Spigerverket lar konsesjonen tilfalle Staten. Kartbilagene viser geologisk kartlegging med prøvetakingsprofiler i det mineraliserte feltet. Forekomstnr. forts.: 50076-84 og 50397. Forekomstens koordinater forts.: 35 6131 78251.

Kvalheim, A. , 1942
Kort geologisk oversikt over Porsa gruvedistrikt.
;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 302;11 pages
Abstract:
Lok. Nr. 50067-68, 50076-84, 50397. Rapporten gir en geologisk oversikt over Porsafeltet. Deretter beskrives de viktigste malmforekomstene. De er kvarts-karbonat ganger med kobberkis som med et unntak opptrer i grønnstein. En mineralisert gang finnes også i en skiferhorisont. Kjemisk analyse av malm, kobberkonsentrat og flotasjonsavgang er presentert. Gruvedriften ble avsluttet i 1929.

Krause, Michael , 1980
Some uranium mineralizations in the Raipas Suite of the Komagfjord tectonic window, Finnmark, Norway.
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.355;49-52 pages
Abstract:
Uranium mineralizations have been discovered in the northwest part of the Komagfjord tectonic window. The mineralizations are found in two mines of the old Porsa-Neverfjord copper mining district. Pitchblende and brannerite occur as primary minerals. Black slates are considered to be the source rocks of the uranium-bearing fluids.

Kvalheim, A. , 1928
Rapport over Bachkes grube pr. 29/8-1928.
;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 304;8 pages
Abstract:
Lok. Nr. 50067-68, 50076-84, 50397. Bergfangsten i Bachkes gruve i perioden 1900-1906 er beregnet å være ca. 13500 t hvorav av ca. 10000 t var malm. Vurderinger av gjenstående malm i Bachkes gruve, Puntervolds gang og Schutz gruve er gjort. Mineraliseringene i Bachkes gruve antaes å ha økonomisk intresse. Videre undersøkelser anbefales i alle tre gruver.

Kvalheim, A. , 1927
Oversikt over diamantborhullene ved Bachke Grube.
;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 305;6 pages
Abstract:
Lok. Nr. 50067-68, 50076-84, 50397. Utbredelsen av malmen i Bachkes gruve er undersøkt med tre diamantborhull. Foreløpig er den beregnet å være minst 140 m lang og går ned til et dyp av minst 100 m. Boringene fortsetter i Schutz gruve.

Reitan, Paul H. , 1963
The geology of the Komagfjord tectonic window of the Raipas suite, Finnmark, Norway.
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.221;1-71 + kar pages
Abstract:
The report is based on four summers (1956-59) of field work in an area of approximately 860 km2. The area is located in western Finnmark, northern Norway, between 70 degrees 10' and 70 degrees 31' N latitude and 12 degrees 40' and 13 degrees 50' E Oslo longitude. The purpose of the investigation was to study the rocks within a hitherto mainly unexamined area of Precambrian rocks surrounded by Caledonian rocks. Portions of the area near the sea had been visited by a few geologists prior to the initiation of this investigation. It was therefor quite certain that the rocks were Precambrian in age and constituted a window in the Caledonides, but the size of the window was unknown nor had most of the window been studied geologically. This report establishes the Precambrian age of the rocks and delineates the boundaries of the window. The Precambrian rocks along the western coast of Finnmark were previously called the Raipas formation and known to outcrop in (at least) two windows. As this report differentiates seven formations which constitute two groups whithin the Komagfjord (the northernmost) tectonic window, it is purposed that the Precambrian rocks of the two windows be known as the Raipas suite.

Torgersen, J.C. , 1931
Rapport som omhandler Porsa Gruber.
;Norges geologiske undersøkelse;TEKNISK RAPPORT;Bergarkivet; No.BA 3827;12 pages
Abstract:
Rapporten gjør opp status for gruvedriften inntil rapportdato. For året 1930 har driften gått med stort underskudd. Regnskap over utgifter og inntekter dette år gis. Det fremsettes forslag til tekniske forbedringer for å øke lønnsomheten. samt undersøkelsesarbeider for å finne rikere malm. Forfatter er bergmesteren i Finnmark, og rapporten er skrevet til gruveselskapet A/S Porsa.

Fieldsamples
Sample No. Sample type Miscellanrous
FI0132.82-2 Dump
Sampler :Pratt & Nielsen
Comment :Kobbermineralisering i kvarts-karbonatgang
No. of registrated element analyses = 1
FI0132.82-4 Dump
Sampler :Pratt & Nielsen
Comment :Kobbermineralisering i kvarts-karbonatgang
No. of registrated element analyses = 1
FI0132.82-5 Dump
Sampler :Pratt & Nielsen
Comment :Kobbermineralisering i kvarts-karbonatgang
No. of registrated element analyses = 1
FI0132.82-6 Dump
Sampler :Pratt & Nielsen
Comment :Kobbermineralisering i kvarts-karbonatgang
No. of registrated element analyses = 1
FI0132.82-7 Dump
Sampler :Pratt & Nielsen
Comment :Kobbermineralisering i kvarts-karbonatgang
No. of registrated element analyses = 1
FI0132.82-8 Dump
Sampler :Pratt & Nielsen
Comment :Kobbermineralisering i kvarts-karbonatgang
No. of registrated element analyses = 1
FI0132.82-9 Dump
Sampler :Pratt & Nielsen
Comment :Kobbermineralisering i kvarts-karbonatgang
No. of registrated element analyses = 1
HA-P-012 Bedrock
Sampler :KARLSTRØM/...Size(kg) :500
Comment :Kraftig hematittutfelling i serpentinittisert og talkomvandlet grønnstein. Hovedtippen.
No. of registrated element analyses = 1
HA-P-013 Bedrock
Sampler :KARLSTRØM/...Size(kg) :500
Comment :Utfelling av kobberkis, magnetitt og svovelkis i tynn (5 cm) kalkåre i massiv grønnstein.
No. of registrated element analyses = 1
HA-P-014 Bedrock
Sampler :KARLSTRØM/...Size(kg) :500
Comment :Kobberkisklyser i kalkspatgang med aggregater av aktinolittnåler og serpentin.
No. of registrated element analyses = 1
HA-P-015 Bedrock
Sampler :KARLSTRØM/...Size(kg) :500
Comment :Utfelling av kobberkis som klyser og årenett i kalkspat-serpentin-gang i grønnstein.
No. of registrated element analyses = 1
82-1 Dump
Sampler :Pratt & Nielsen
Comment :Kobbermineralisering i kvarts-karbonatgang
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality : Kvalsundstollen
(Object Id : 2017,023,01,00)

Location
County : Finnmark (20) Municipality : Kvalsund (2017)
Map 1:50000: Vargsund (1935-4) Map 1:250000: Hammerfest
Marking point: Longitude: 23.7295950 Latitude: 70.4045220
EU89-UTM Zone 34 (Coordinates IS confirmed)
X-coord: 602140 m. Y-coord: 7813278 m.

Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper
Element(s): Cu
Production
Activity: Mining Reserves:
Prod. method: Underground mining Production:
Prod. status: Disused, closed Volume of dump:


Fieldsamples
Sample No. Sample type Miscellanrous
HA-P-011 Bedrock
Sampler :KARLSTRØM/...Size(kg) :500
Comment :Massiv grønnstein med mineralisering av finfordelt magnetitt, svovelkis og kobberkis. Mineraliseringa finnes langs en sprekkesone loddrett på strøket. Kvalsundstollen.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality : Puntervolds gruve
(Object Id : 2017,023,02,00)

Location
County : Finnmark (20) Municipality : Kvalsund (2017)
Map 1:50000: Vargsund (1935-4) Map 1:250000: Hammerfest
Marking point: Longitude: 23.7285690 Latitude: 70.4048520
EU89-UTM Zone 34 (Coordinates IS confirmed)
X-coord: 602099 m. Y-coord: 7813313 m.

Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper
Element(s): Cu
Production
Activity: Mining Reserves:
Prod. method: Underground mining Production:
Prod. status: Disused, closed Volume of dump:


Name of Locality : Lunds synk
(Object Id : 2017,023,03,00)

Location
County : Finnmark (20) Municipality : Kvalsund (2017)
Map 1:50000: Vargsund (1935-4) Map 1:250000: Hammerfest
Marking point: Longitude: 23.7248600 Latitude: 70.4061480
EU89-UTM Zone 34 (Coordinates IS confirmed)
X-coord: 601954 m. Y-coord: 7813451 m.

Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper
Element(s): Cu
Production
Activity: Mining Reserves:
Prod. method: Underground mining Production:
Prod. status: Disused, closed Volume of dump:


Name of Locality : Schutz gruve
(Object Id : 2017,023,04,00)

Location
County : Finnmark (20) Municipality : Kvalsund (2017)
Map 1:50000: Vargsund (1935-4) Map 1:250000: Hammerfest
Marking point: Longitude: 23.7288670 Latitude: 70.4066780
EU89-UTM Zone 34 (Coordinates IS confirmed)
X-coord: 602101 m. Y-coord: 7813517 m.

Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper
Element(s): Cu
Production
Activity: Mining Reserves:
Prod. method: Underground mining Production:
Prod. status: Disused, closed Volume of dump:


Name of Locality : Skjerp 5
(Object Id : 2017,023,05,00)

Location
County : Finnmark (20) Municipality : Kvalsund (2017)
Map 1:50000: Vargsund (1935-4) Map 1:250000: Hammerfest
Marking point: Longitude: 23.7381970 Latitude: 70.4118690
EU89-UTM Zone 34 (Coordinates IS confirmed)
X-coord: 602424 m. Y-coord: 7814111 m.

Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper
Element(s): Cu
Production
Activity: Pitting Reserves:
Prod. method: Production:
Prod. status: Volume of dump:


Name of Locality : Hans gruve
(Object Id : 2017,023,06,00)

Location
County : Finnmark (20) Municipality : Kvalsund (2017)
Map 1:50000: Vargsund (1935-4) Map 1:250000: Hammerfest
Marking point: Longitude: 23.7262710 Latitude: 70.4130620
EU89-UTM Zone 34 (Coordinates IS confirmed)
X-coord: 601973 m. Y-coord: 7814224 m.

Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper
Element(s): Cu
Production
Activity: Pitting Reserves:
Prod. method: Production:
Prod. status: Volume of dump:


Information(s) in free text format
Free text
Forekomsten ligger på østsida av elva i Vesterdalen, ca. 240 m rett øst for Malakittskjerpene. Den består av en 1,2 m bred og 1,5 m høy stoll som minst er 20 m lang. Retningen på stollen er 170°. Kobbermalmen finnes i en minst 10 cm bred karbonatgang som ligger i grønnstein. Gangen fører hyppig linser/slirer av sidesteinen og det er skarp kontakt til denne. Kobberkis opptrer som aggregater i karbonat og i strenger/årer langs kontakten mellom karbonatgangen og grønnsteinen. Grønnsteinen er finkornet, mørk grønn og magnetittførende. En tipp med volum ca. 50 m3 ligger nedover lia.

Fieldsamples
Sample No. Sample type Miscellanrous
HA-P-018 Bedrock
Sampler :Karlstrøm, H./...Stored :Løkken
No. of registrated element analyses = 1
HA-P-019 Bedrock
Sampler :Karlstrøm, H./...Stored :Løkken
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality : Hallingstad gruve
(Object Id : 2017,023,07,00)

Location
County : Finnmark (20) Municipality : Kvalsund (2017)
Map 1:50000: Vargsund (1935-4) Map 1:250000: Hammerfest
Marking point: Longitude: 23.7295780 Latitude: 70.4131920
EU89-UTM Zone 34 (Coordinates IS confirmed)
X-coord: 602095 m. Y-coord: 7814244 m.

Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper
Element(s): Cu
Production
Activity: Pitting Reserves:
Prod. method: Production:
Prod. status: Volume of dump:


Information(s) in free text format
Free text
Forekomsten ligger på østsida av elva i Vesterdalen, ca. 120 m rett øst for Hans gruve. Den består av en 15 m lang dagskjæring som er opptil 6-7 m høy. Skjæringa ender i sør i et mindre, uregelmessig tverrslag. Kobberkis finnes på flere subparallelle, tilnærmet vertikale karbonatårer som er 1-10 cm brede. Det er trolig flere faser med avsetning av fin- til grovkornet karbonat i årene. Den siste i korte ekstensjonsårer/-linser. Kobberkis danner aggregater og er disseminert i årene. Sidesteinen er mørk grønnstein som i Hans gruve. En tipp med volum ca. 50 m3 ligger nedover lia.

Fieldsamples
Sample No. Sample type Miscellanrous
HA-P-020 Bedrock
Sampler :Karlstrøm, H./...Stored :Løkken
No. of registrated element analyses = 1
HA-P-021 Bedrock
Sampler :Karlstrøm, H./...Stored :Løkken
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:


Analyse Results
from
Deposit Area 2017 - 023 Bachkes gruve

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#
FI0132.82-2 Dump 62304 1 6 575 8 2.5 159.0
FI0132.82-4 Dump 2695 9 28 23 6 .1 30.0
FI0132.82-5 Dump 75886 1 2 147 12 3.1 365.0
FI0132.82-6 Dump 1083 17 3 17 24 .1 15.0
FI0132.82-7 Dump 11140 1 4 20 14 1.0 56.0
FI0132.82-8 Dump 100 28 4 26 36 .1 7.0
FI0132.82-9 Dump 165 24 2 15 31 .1 4.0
HA-P-011 Bedrock 15948 61 4 374 39 1.1 116.0
HA-P-012 Bedrock 721 2 6 10 4 .4 1.0
HA-P-013 Bedrock 17808 44 2 931 50 .9 79.0
HA-P-014 Bedrock 25456 65 2 72 9 1.0 204.0
HA-P-015 Bedrock 37356 90 4 154 13 1.2 210.0
HA-P-018 Bedrock 17412 43 8 17 27 .4 228.0
HA-P-019 Bedrock 19212 41 2 11 8 .8 327.0
HA-P-020 Bedrock 62195 172 2 34 66 1.2 557.0
HA-P-021 Bedrock 41805 99 2 28 24 .8 231.0
82-1 Dump 543 67 3 56 52 .1 7.0
------------------
Sample No. Pt# Pd# Rh# As* Cd* Ba* Mo* Sb* Bi*
FI0132.82-2 2.0 7.0 2.0 12 1.0 14 17.00 2 24
FI0132.82-4 9.0 8.0 2.0 3 1.0 34 88.00 2 2
FI0132.82-5 2.0 2.0 2.0 7 3.0 9 3.00 2 14
FI0132.82-6 6.0 10.0 2.0 2 1.0 33 10.00 2 2
FI0132.82-7 10.0 14.0 2.0 2 1.0 14 7.00 2 2
FI0132.82-8 14.0 17.0 2.0 3 1.0 50 1.00 2 2
FI0132.82-9 6.0 15.0 2.0 2 1.0 70 1.00 2 2
HA-P-011 8.0 9.0 1.0 5 2.2 20 1.00 2 2
HA-P-012 2.0 1.0 1.0 2 .7 7 1.00 2 3
HA-P-013 14.0 34.0 1.0 41 1.9 11 1.00 2 2
HA-P-014 3.0 5.0 1.0 3 2.2 5 1.00 2 4
HA-P-015 1.0 3.0 1.0 7 3.2 9 17.00 2 23
HA-P-018 2.0 1.0 1.0 3 1.2 15 11.00 2 6
HA-P-019 1.0 1.0 1.0 3 1.7 18 1.00 2 7
HA-P-020 6.0 8.0 1.0 3 5.8 28 44.00 2 2
HA-P-021 3.0 29.0 1.0 2 3.7 21 7.00 2 21
82-1 11.0 19.0 2.0 3 2.0 138 1.00 2 2
------------------
Sample No. S% V* Cr* Mn* Fe% Th* U* W* Sr*
FI0132.82-2 8.89 10 1 514 8.70 2.00 9.00 1 26.0
FI0132.82-4 .29 76 19 528 7.52 4.00 90.00 1 23.0
FI0132.82-5 9.68 36 1 1354 14.81 3.00 5.00 1 43.0
FI0132.82-6 .11 100 32 493 5.60 1.00 5.00 1 18.0
FI0132.82-7 .29 113 34 149 9.26 1.00 5.00 1 4.0
FI0132.82-8 .02 114 54 346 4.26 1.00 5.00 2 3.0
FI0132.82-9 .02 155 58 237 8.00 1.00 5.00 1 2.0
HA-P-011 6.22 111 63 366 19.62 1.00 5.00 1 4.0
HA-P-012 .12 97 9 1088 14.16 1.00 9.00 1 36.0
HA-P-013 11.23 101 69 335 21.22 1.00 5.00 1 10.0
HA-P-014 5.16 83 13 2175 14.94 1.00 6.00 1 69.0
HA-P-015 5.46 31 12 1134 8.17 1.00 7.00 1 41.0
HA-P-018 3.11 21 31 1816 3.87 1.00 5.00 1 237.0
HA-P-019 2.58 4 17 3515 3.95 1.00 5.00 1 132.0
HA-P-020 10.02 108 63 708 10.35 1.00 5.00 3 54.0
HA-P-021 7.26 31 24 1841 6.15 1.00 5.00 1 172.0
82-1 .05 228 70 528 13.10 3.00 26.00 1 11.0
------------------
Sample No. La* B* Na* Mg* Al* P* K * Ca* Ti*
FI0132.82-2 2.00 2 0 0 0 0 0 4 0
FI0132.82-4 4.00 2 0 1 1 0 1 4 0
FI0132.82-5 2.00 2 0 0 0 0 0 10 0
FI0132.82-6 2.00 2 0 1 1 0 1 3 0
FI0132.82-7 4.00 2 0 0 1 0 0 1 0
FI0132.82-8 2.00 2 0 2 2 0 1 1 1
FI0132.82-9 2.00 2 0 1 1 0 1 1 0
HA-P-011 2.00 2 0 1 1 0 1 0 0
HA-P-012 3.00 2 0 0 0 0 0 9 0
HA-P-013 3.00 2 0 0 0 0 0 2 0
HA-P-014 2.00 2 0 0 0 0 0 17 0
HA-P-015 2.00 2 0 0 0 0 0 12 0
HA-P-018 5.00 2 0 1 1 0 0 20 0
HA-P-019 3.00 2 0 3 0 0 0 23 0
HA-P-020 13.00 2 0 1 1 0 1 6 0
HA-P-021 10.00 2 0 1 0 0 0 19 0
82-1 2.00 2 0 3 4 0 3 0 0


The fact sheet was created on 26.06.2022

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