|
|
Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1825 - 012 | |||||
| (Last updated 01.mar.2000) | |||||
Name of Deposit Area : Jamtfjelldalen |
| (Object Id : 1825,012,00,00) |
| Location |
| County : | Nordland (18) | Municipality : | Grane (1825) |
| Map 1:50000: | Trofors (1926-3) | Map 1:250000: | Mosjøen |
| Marking point: | Longitude: | 13.5872620 | Latitude: | 65.7198980 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 435182 m. | Y-coord: | 7289418 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Lead | |
| Element(s): | Pb Cu |
| Production |
| Activity: | Exploration | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
| Importance |
| Public: | Not Assessed (reg. 18.02.2015) |
| Economical: | Not classified/evaluated |
Operations |
| From - To | Activity | Comments | |
| 1981 - 1983 | Geochemistry | Company/Institution :BP Norge A/S Minerals | |
| 1989 - 1989 | Sampling | Company/Institution :NGU |
Mineralization |
| Era: | Paleozoic | Period: | Devonian | |
| Dating: | Method: | |||
| Genesis: | Hydrothermal vein | Form: | Plate | |
| Main texture: | Fracture filling | Min. distribution: | Irregular (scattered) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: |
| Strike/Dip: | 82 / 62 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Helgeland Nappe Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Geittind | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) | |
| Ore mineral | Galena | Major mineral (>10%) | |
| Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Arsenopyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Migmatittisk biotittgneis | Sedimentary Original rock :Mudstone |
|
| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :192 / 80 | Pre-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| De mineraliserte systemer av kvartsganger (10-150 cm brede) finnes øverst i østlia av Jamtfjelldalen, men tilsvarende systemer finnes også nedover lia mot dalbunnen i vest hvor de ifølge BV? er gullførende. Mineraliseringen ble påvist i 1983 av BP Norge A/S Minerals. Systemene med kvartsganger omfatter både enkelte stående ganger, breksjeganger med forgreninger, sett med parallelle ganger og "en echelon"-systemer av ganger. Bare enkelte av disse fører sulfider, dvs. ganger som har vært utsatt for senere deformasjon med assosiert oppsprekning av gangkanten. Disse sprekker fører disseminerte korn og uregelmessige aggregater av blyglans og kobberkis (Hovedanvisning), svovelkis (Nordlige anv.) og aksessorisk arsenkis (Sørlige anv.). Noen av gangene fører også litt kloritt. Kvartsgangen står på tvers av foliasjonen i de svakt migmatittiske granat-biotitt-gneisene. Gangene, som er 5-30 cm lange, har strøk/fall: 115/70, 82/62 (Hovedgang), 90/90, 109/75, 102/90, 121/80, 313/72 (Nordre anv.), 75/80, 99/60 (Sørlige anv.) |
Bibliography: |
| From NGU's Reference Archive: |
| Gustavson, Magne , 1988 |
| Mosjøen. Berggrunnsgeologisk kart M 1 : 250 000. Beskrivelse. |
| ;Norges geologiske undersøkelse;KARTBESKRIVELSE; BOK;Skrifter; No.87;1 - 42 pages |
| Abstract: | |
| The principal geological and tectonostratigraphic divisions of the bedrock within the area of mapsheet Mosjøen are: (1) Precambrian basement rocks with minor occurrences of possible Cambrian cover sediments, (2) the Susendalen Nappe, (3) the Seve-Køli Nappe Complex, (4) the Rødingsfjell Nappe, and (5) the Helgeland Nappe Complex. Short accounts of economic geology (ores and industrial minerals) are given. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||
| 39/9089740 | Bedrock |
|
||
| 39/9089741 | Bedrock |
|
Name of Locality : Nordre anv. |
| (Object Id : 1825,012,01,00) |
| Location |
| County : | Nordland (18) | Municipality : | Grane (1825) |
| Map 1:50000: | Trofors (1926-3) | Map 1:250000: | Mosjøen |
| Marking point: | Longitude: | 13.5923840 | Latitude: | 65.7219200 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 435422 m. | Y-coord: | 7289638 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Lead | |
| Element(s): | Pb Cu |
| Production |
| Activity: | Exploration | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||
| 39/9089742 | Bedrock |
|
Name of Locality : Søndre anv. |
| (Object Id : 1825,012,02,00) |
| Location |
| County : | Nordland (18) | Municipality : | Grane (1825) |
| Map 1:50000: | Trofors (1926-3) | Map 1:250000: | Mosjøen |
| Marking point: | Longitude: | 13.5873550 | Latitude: | 65.7181940 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 435182 m. | Y-coord: | 7289228 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Lead | |
| Element(s): | Pb Cu |
| Production |
| Activity: | Exploration | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||
| 39/9089743 | Bedrock |
|
| The fact sheet was created on 17.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |