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THE ORE DATABASE
Occurence 1929 - 002 Hamn
(Object Id: 1929,002,00,00)
(Last updated: 15.03.2024)
Drill Cores: Hamn

Location
County: Troms (19) Municipality: Berg (1929)
Map 1:50000: Gryllefjord (1333-1) Map 1:250000: Tromsø
Coordinate system: EU89-UTM Zone 34
East: 348883 m. North: 7705055 m.
Longitude: 17.1472010 Latitude: 69.4119430
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Resource
Resource Type: Ferroalloys (Cr,Ni,Co,V,Mo,W) Resource Subtype: Nickel
Element(s): Ni Cu Co
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)
Historical: Yes , (Confirmed 25.feb.2005 by Havard Gautneb)

Resources and production
Activity: Mining Reserves:
Operating method: Open pit and underground mining Historical production: 109 thousand tons


Products
Element/product Crude ore grade or quality Reg. date
Co 0.066 % 15.03.2024
Cu 0.46 % 09.03.1994
Ni 0.9 % 09.03.1994

Operations
From - To Activity Comments
1872 - 1880 Regular production Company/Institution :Senjen Nikkelverk
1880 - 1886 Regular production Company/Institution :Vivian & Co
1962 - 1962 Geophysics Company/Institution :NGU

Mineralization
Era: Proterozoic Period:
Genesis: Orthomagmatic formation Form: Lens
Main texture: Structureless Min. distribution: Semi-massive (20-50 % ore minerals)
Main grain size: Medium grained (1-3 mm) Main alteration:
Strike/Dip: 90 / 90 Direction:
Plunge:
Stratigraphic classification of host rock
Era: Proterozoic Period:
Province: Caledonian Basement Province
Geotec.unit: West-Troms Complex
Tectonic complex:
Igneous complex:
Group: Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Amphibole Major mineral (>10%)
Gangue mineral Plagioclase Subordinate mineral (1-10%)
Gangue mineral Biotite Accessory mineral (<1%)
Ore mineral Pyrrhotite Major mineral (>10%)
Ore mineral Pyrite Subordinate mineral (1-10%)
Ore mineral Pentlandite Subordinate mineral (1-10%)
Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Lithology:
Relationship Rock Origin
Host rock gabbro Intrusive
Original rock :Gabbro

Information(s) in free text format
Free text
The deposit was in production from 1872-1886 with a short break in the late 1870's. During the 1880's, the deposit has been leased by the English company of Vivian & Co, which worked the deposit until 1886. Production was ceased because the ore body was found to wedged out further down. The deepest shaft is 62m, and there is supposedly still ore even at the deepest level. From 1880-1886, 48.000 tonnes of ore were smelted. Altogether, 109.000 tonnes were produced, with an average Ni content of 0.9wt% and Cu content of 0.4wt%. The mine entrance is about 60x15m, water table is about 15m lower. According to Bugge 1935, the ore body is cigar shaped with dimensions 60x13m. In the upper part, the ore body stands steep whereas further down it dips at 45E towards S. The ore consists of semi-massive pyrrhotite, pyrite, pentlandite, and chalcopyrite in a medium grained gabbro. Samples 01-04 were all collected at the tailings; sample 04 is a collection. Massive sulphide was also collected from the tailings (sample 05). About 800m E at 100m a.s.l., at UTM coordinates 585100 7701980, a 10m long adit with a 20m3 tailings heap has been driven towards N. The gabbro is only mineralized at the adit entrance, with a 2-3m thickness, consisting of weak impregnation with pyrrhotite, pyrite, and chalcopyrite (sample 06). Six holes up to almost 200m deep were drilled by Store Norske Gull in 2008: The cores did not reveal new mineralization of significance but gave information relevant to the assessment of the potential of the Hamn area. Olivine (forsterite)-rich cumulates in the Hamn complex are uniformly depleted in Ni - to a level of ca. 600 ppm, which clearly suggests that the magma had already been partially depleted in Ni prior to the crystallization of these cumulates. This episode of sulphur saturation may be the one that formed the Hamn mineralization or may have led to formation of sulphides in a lower-crustal level magma chamber part of which may be the mineralization seen at the surface.

Bibliography:
From NGU's Reference Archive:
Bryn, E.; Lenschow, J. , 1917
Rapport over Senjen Nikkelverk.
;Norges geologiske undersøkelse;TEKNISK RAPPORT;Bergarkivet; No.BA 2591;2 pages
Abstract:
Kort beskrivelse av beliggenhet, drift og produksjon, malmens utstrekning, transport og vannkraft. I en kort konklusjon anbefales diamantboring.

Bugge, C. , 1935
Rapport over Senjens nikkelverk.
;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 840;4 pages
Abstract:
Det har vært drift fra 1872 til 1886. Malmen er magnetkis med ca. 0,9 % nikkel og noe kobberkis. Sidebergarten er gabbro. Forekomsten er anbefalt undersøkt nærmere med diamantboring. Anslått behov for boring er ca. 300 meter.

Singsaas, Per , 1962
Egenspenningsmålinger Havn Nikkelgrube.
;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.322;5 pages

Pollack , 1940
Aktennotiz betreffend der Nickellagerstette Senjen.
;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 842;2 pages
Abstract:
Innledning med geografisk beskrivelse og historikk. Videre følger en malmgeologisk del som behandler malmtyper, mektigheter og utstrekning i felt. Tilslutt noe om gruvedriften og avbygginger.

References not to be found in NGU's Reference Archive.:
Boyd, R., Often, M. (2009): The Geological Setting of the Hamn Nickel Deposit, Senja, Troms. NGU Report 2009.035. Clients: Store Norske Gull and NGU. 24p.

Fieldsamples
Sample No. Sample type Miscellanrous
TR0447.01 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Middelsk. gabbro med semimassiv po-py-ptl-cpy.
No. of registrated element analyses = 1
TR0447.02 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Middelsk. gabbro med semimassiv po-py-ptl-cpy.
No. of registrated element analyses = 1
TR0447.03 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Middelsk. gabbro med semimassiv po-py-ptl-cpy.
No. of registrated element analyses = 1
TR0447.04 Dump
Sampler: Wilberg, R./...Stored: Løkken
Comment: Middelsk. gabbro med semimassiv po-py-ptl-cpy, plukkprøve.
No. of registrated element analyses = 1
TR0447.05 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Massiv po-py-ptl-cpy.
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: 1929,002,01,00)

Location
County: Troms (19) Municipality: Berg (1929)
Map 1:50000: Gryllefjord (1333-1) Map 1:250000: Tromsø
Coordinate system: EU89-UTM Zone 34
East: 349661 m. North: 7704979 m.
Longitude: 17.1671020 Latitude: 69.4117060
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Resource
Resource Type: Ferroalloys (Cr,Ni,Co,V,Mo,W) Resource Subtype: Nickel
Element(s): Ni Cu
Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Information(s) in free text format
Free text
Ca. 800 m mot øst og 100 m.o.h. (UTM 585100 7701980) er det en 10 m lang stoll mot nord (20 m3 tipp). Gabbroen er mineralisert bare ved stollinnslaget over 2-3 m mektighet. Det er her bare svak disseminasjon av svovelkis, magnetkis og kobberkis (06).

Fieldsamples
Sample No. Sample type Miscellanrous
TR0447.06 Bedrock
Sampler: Wilberg, R./...Stored: Løkken
Comment: Middelsk. gabbro med py-po-cpy-diss.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:


Analyse Results
from
Deposit Area 1929 - 002 Hamn

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#
TR0447.01 Bedrock 3810 78 89 813 11000 -16.2 23.0
TR0447.02 Bedrock 7140 95 87 904 12200 -16.2 57.0
TR0447.03 Bedrock 14300 104 -81 219 3580 -16.2 95.0
TR0447.04 Dump 5720 58 -81 545 7350 -16.2 18.0
TR0447.05 Bedrock 7580 90 -81 841 15000 -16.2 20.0
TR0447.06 Bedrock 1320 24 -5 34 207 -1.0 14.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sn* Sb* Bi*
TR0447.01 45.0 135.0 -20 -16.2 100 -16.20 -20 -20 -20
TR0447.02 281.0 838.0 -20 -16.2 73 -16.20 -20 -20 -20
TR0447.03 235.0 50.0 -20 -16.2 105 -16.20 -20 -20 -20
TR0447.04 100.0 106.0 -20 -16.2 173 -16.20 -20 -20 -20
TR0447.05 44.0 226.0 -20 -16.2 148 -16.20 -20 -20 -20
TR0447.06 7.0 10.0 -20 -1.0 137 -1.00 -20 -20 -20
------------------
Sample No. S% V* Cr* Mn* Fe% Th* U* Sr* La*
TR0447.01 14.10 64 453 752 30.90 -30.00 -30.00 48.0 -16.20
TR0447.02 15.40 58 550 676 33.80 -30.00 -30.00 -32.4 -16.20
TR0447.03 5.20 35 261 289 8.96 -30.00 -30.00 95.4 -16.20
TR0447.04 9.30 131 227 253 17.40 -30.00 -30.00 77.7 -16.20
TR0447.05 16.60 45 153 298 28.10 -30.00 -30.00 112.0 -16.20
TR0447.06 .67 25 8 180 4.40 -30.00 -30.00 147.0 -1.00
------------------
Sample No. B*
TR0447.01 -81
TR0447.02 -81
TR0447.03 -81
TR0447.04 -81
TR0447.05 -81
TR0447.06 -5


The fact sheet was created on 01.11.2024

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