(Last updated: 18.02.2005)
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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 5518 - 008 Trosen | |||||
| (Object Id: 1424) (Last updated: 18.02.2005) |
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| Location |
| County: | Troms | Municipality: | Loabák (5518) |
| Map 1:50000: | Bonnes (1432-2) | Map 1:250000: | Narvik |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 622772 m. | North: | 7624592 m. |
| Longitude: | 18.0303480 | Latitude: | 68.7058740 |
| Show on map |
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| Resource |
| Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Copper | |
| Element(s): | Cu Pb Zn |
| Importance |
| Raw material meaning: | Little Importance (reg. 18.02.2015) |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Mineralization |
| Genesis: | Hydrothermal vein | Form: | Plate | |
| Main texture: | Fracture filling | Min. distribution: | Irregular (scattered) |
| Main grain size: | Coarse grained (> 3 mm) | Main alteration: |
| Strike/Dip: | 290 / 25 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | ||
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Ore mineral | Pyrrhotite | Major mineral (>10%) | |
| Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Sphalerite | Subordinate mineral (1-10%) | |
| Ore mineral | Galena | Subordinate mineral (1-10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | kalkspatmarmor | Sedimentary Original rock :Limestone |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Joints/Fractures | Strike/Dip :290 / 25 | Pre-mineralisation ;...Effect :Controls | |
| Host rock | Fold axis | Strike/Dip :315 / 10 | Pre-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| Mineraliseringen er en mindre analog til Kveldskardet vel 4 km mot nord, og opptrer i samme stratigrafiske nivå hvor hydrotermalkvartsganger har trengt inn i ett eller flere nivå av marmoren. Ved UTM 379740 7624670 (740 m.o.h.) er det i en steil fjellvegg, over en mektighet på ca. 3 m, dels rette regelmessige, og dels uregelmessige linseformige kvartsganger. Største mektighet av en enkelt gang er 1 m. Gangene er blottet over ca. 20 m lengde. Kvartsgangenes sidestein er foldet, finkornet kalkspatmarmor. Gangretningen er 290/25, og de skjærer diskordant gjennom den foldete marmoren. Over og under den ca. 20 m mektige marmoren er det glimmerskifer. Kvartsgangene fører lite sulfider, men lokalt opptrer opptil 5x10 cm2 linser/ansamlinger av magnetkis, kobberkis, sinkblende og blyglans (prøve 02). Ved UTM 380350 7624170 (610 m.o.h.) er det en 2-3 m mektig kvartsgang (av ukjent lengde) med magnetkis-kobberkis-disseminasjon (01). |
Bibliography: |
| From NGU's Reference Archive: |
| Lund, Per Ragnar , 1965 |
| En geologisk undersøkelse på den sørøstre del av kartbladet Salangen. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.234;74-102 pages |
| Abstract: | |
| Petrographic and structural investigations were made in a Cambro-Ordovician area of the Caledonides of Northern Norway, situated in Salangen, Troms. The rocks, mainly mica schists rich in biotite and/or muscovite, are mostly folded and the schistosity is very distinct. This group of rocks also comprises light gneisses rich in microcline; probably they represent metamorphic sediments. In the upper parts of the sequence are found some amphibolites and layers with large hornblende crystals in the mica schist. Crystalline limestones occur in the lower parts, the zones are always less than 20-30 meters in thickness. Precambrian granite represent windows at the bottom of the Salangen valley. A Caledonian granite is intruded in the schists near Lavangen. Analysis, norm and mode of the last mentioned granite are given. The mineral assemblies suggest that the rocks are in the lower part of the almandine-amphibolite facies. Albite is the common feldspar in the rocks and the biotite isograd as well as the garnet isograd are exceeded in the area. The described rocks lies in the continuation of the Håfjell synclinorium in Ofoten. A north-north-east direction of the strike combined with dip to the west certifies this. Folding on almost horizontal axes trending along the main Caledonian direction is combined with north-east cross-folds. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||
| TR0479.02 | Bedrock |
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Name of Sample point: Prøvepunkt 1 |
| (Object Id: 1897 8,00,01) |
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| Location |
| County: | Troms | Municipality: | Loabák (5518) |
| Map 1:50000: | Bonnes (1432-2) | Map 1:250000: | Narvik |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 623427 m. | North: | 7624154 m. |
| Longitude: | 18.0459720 | Latitude: | 68.7016590 |
| Show on map |
|
|
| Resource |
| Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Copper | |
| Element(s): | Kis Cu Pb Zn |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| TR0479.01 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 5518 - 008 Trosen |
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# |
| TR0479.01 | Bedrock | 103 | 6 | 7 | 55 | 97 | -1.0 | 1.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sn* | Sb* | Bi* |
| TR0479.01 | 3.0 | 3.0 | -20 | -1.0 | 9 | -1.00 | -20 | -20 | -20 |
| ------------------ |
| Sample No. | S% | V* | Cr* | Mn* | Fe% | Th* | U* | Sr* | La* |
| TR0479.01 | 2.26 | 10 | -1 | 7 | 4.32 | -30.00 | -30.00 | 3.4 | -1.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| TR0479.01 | -5 |
| The fact sheet was created on 27.04.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |