(Last updated: 16.05.2006)
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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 5060 - 001 Risvikbukta | |||||
| (Object Id: 184) (Last updated: 16.05.2006) |
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| Location |
| County: | Trøndelag | Municipality: | Nærøysund (5060) |
| Map 1:50000: | Foldereid (1724-1) | Map 1:250000: | Namsos |
| Coordinate system: | EU89-UTM Zone 32 |
| East: | 630940 m. | North: | 7190142 m. |
| Longitude: | 11.7578250 | Latitude: | 64.8100920 |
| Show on map |
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| Resource |
| Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Sulphides | |
| Element(s): | Kis |
| Importance |
| Raw material meaning: | Little Importance (reg. 18.02.2015) |
| Resources and production |
| Activity: | Pitting | Reserves: | ||
| Operating method: | Historical production: |
Operations |
| From - To | Activity | Comments | |
| 1991 - 1991 | Sampling | Company/Institution :NGU |
Mineralization |
| Genesis: | Sedex | Form: | Layer | |
| Main texture: | Banded | Min. distribution: | Disseminated (<20 % ore minerals) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: |
| Strike/Dip: | 35 / 60 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | Caledonides | |
| Geotec.unit: | Seve Nappe Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Biotite | Major mineral (>10%) | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Potassic feldspar | Major mineral (>10%) | |
| Gangue mineral | Plagioclase | Major mineral (>10%) | |
| Gangue mineral | Garnet | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) | |
| Ore mineral | Pyrrhotite | Subordinate mineral (1-10%) | |
| Ore mineral | Chalcopyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Garnet mica schist | Sedimentary Original rock :Argillaceous sediment |
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| Metamorphic facies :Amphibolite | |||
| Wall rock | Calcite marble | Sedimentary Original rock :Limestone |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :35 / 60 | Post-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| Mineraliseringen opptrer i veiskjæring og foruten det materialet som er sprengt ved veibyggingen og brukt til veifylling i nærheten, er det kun en liten (0,5 m3) røsk like ved veien. Sulfid-disseminasjonen opptrer i granatglimmerskifer i en mektighet på 10 m og lengde minst 200 m. Svovelkis (5%) og noe magnetkis og kobberkis er finfordelt i skiferen og finnes også på sprekker (prøve 01-04). I skiferen er det hyppige lag og linser av kvarts med sulfider innesluttet og langs kontakten (01). Innen den mineraliserte sonen er det også sulfidfrie skiferlag og noen dm-mektige kalkspatmarmorlag. I hengen er det et 10 cm mektig kalkspatmarmor-lag, så båndet gneis med veksling av granatglimmer-gneis, lys granittisk gneis og hornblendegneis. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| NT0186.01 | Bedrock |
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| NT0186.02 | Bedrock |
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| NT0186.03 | Bedrock |
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| NT0186.04 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 5060 - 001 Risvikbukta |
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# |
| NT0186.01 | Bedrock | 53 | 104 | 2 | 18 | 169 | .1 | 2.0 |
| NT0186.02 | Bedrock | 77 | 85 | 6 | 14 | 52 | .1 | 1.0 |
| NT0186.03 | Bedrock | 76 | 109 | 2 | 20 | 73 | .1 | 2.0 |
| NT0186.04 | Bedrock | 35 | 82 | 2 | 13 | 55 | .1 | 3.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| NT0186.01 | 1.0 | 2.0 | 2 | .2 | 97 | 6.00 | 2 | 2 | 1.58 |
| NT0186.02 | 1.0 | 5.0 | 2 | .2 | 91 | 4.00 | 2 | 2 | 1.25 |
| NT0186.03 | 2.0 | 3.0 | 2 | .2 | 85 | 3.00 | 2 | 2 | 1.50 |
| NT0186.04 | 3.0 | 4.0 | 2 | .2 | 136 | 5.00 | 2 | 2 | 1.57 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| NT0186.01 | 70 | 146 | 254 | 5.06 | 7.00 | 5.00 | 1 | 33.0 | 18.00 |
| NT0186.02 | 70 | 80 | 488 | 4.50 | 10.00 | 5.00 | 1 | 38.0 | 26.00 |
| NT0186.03 | 106 | 92 | 771 | 5.81 | 9.00 | 5.00 | 1 | 11.0 | 35.00 |
| NT0186.04 | 75 | 80 | 267 | 4.64 | 9.00 | 5.00 | 1 | 6.0 | 30.00 |
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| Sample No. | B* | ||||||||
| NT0186.01 | 2 | ||||||||
| NT0186.02 | 2 | ||||||||
| NT0186.03 | 2 | ||||||||
| NT0186.04 | 2 |
| The fact sheet was created on 03.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |