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THE ORE DATABASE
Occurence 1826 - 037 Bleriken
(Object Id: 34677)
(Last updated: 15.02.2017)

Location
County: Nordland Municipality: Aarborte (1826)
Map 1:50000: Krutvatnet (2026-3) Map 1:250000: Mosjøen
Coordinate system: EU89-UTM Zone 33
East: 474611 m. North: 7267628 m.
Longitude: 14.4507130 Latitude: 65.5299470
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Copper
Element(s): Cu
Importance
Raw material meaning: Not Assessed (reg. 20.03.2017)
Historical: No , (Confirmed 23.jan.2017 by Terje Bjerkgård)

Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Operations
From - To Activity Comments
1968 - 1968 Pitting Company/Institution :Boliden

Mineralization
Era: Paleozoic Period: Ordovician
Genesis: Metamorphic formation Form: Irregular
Main texture: Min. distribution: Irregular (scattered)
Main grain size: Medium grained (1-3 mm) Main alteration: Chloritisation
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Paleozoic Period: Ordovician
Province: Caledonides
Geotec.unit: Køli Nappe Complex
Tectonic complex: Lower Køli
Igneous complex:
Group: Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Chlorite Major mineral (>10%)
Gangue mineral Epidote Subordinate mineral (1-10%)
Gangue mineral Titanite Accessory mineral (<1%)
Gangue mineral Garnet Accessory mineral (<1%)
Ore mineral Chalcopyrite Major mineral (>10%)

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

Information(s) in free text format
Free text
Forekomsten ligger ca. 100 m nord for Bleriken og ca. 110 m øst for lite tjern. Mineraliseringen består av kobberkis-striper i klorittisk grønnskifer. Den ble funnet av Boliden i 1965 og mer inngående undersøkelser ble gjort i 1968. Det ble funnet en rekke tynne striper med kobberkis over en sone opptil 20 m mektig. Det ble sprengt og prøvetatt i den mest lovende del av sonen som var ca. 5 m mektig, men kun spredte tynne striper ble funnet i 0.1-0.7 m lag. Høyeste gehalter i prøvene var bare 1.5 % Cu.

Bibliography:
References not to be found in NGU's Reference Archive.:
Barkey, L.A. (1969): Bolidens rapporter fra malmundersøkelsene i perioden 1964-1969. Bergvesenets rapport BV7265.

Fieldsamples
Sample No. Sample type Miscellanrous
HATT 16-9 Bedrock
Sampler: T. Bjerkgård/...Stored: Løkken
Comment: Chalcopyrite stripes in chloritic greenschist


The fact sheet was created on 24.10.2021

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