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Norsk versjon | ||||
| THE INDUSTRIAL MINERAL DATABASE | |||||
| Deposit Area 1868 - 312 | |||||
| (Last updated 26.mar.2024) | |||||
Name of Deposit Area : Alsvåg |
| (Object Id : 1868,312,00,00) |
| Location |
| County : | Nordland (18) | Municipality : | Øksnes (1868) |
| Map 1:50000: | Myre (1232-4) | Map 1:250000: | Svolvær |
| Marking point: | Longitude: | 15.2776760 | Latitude: | 68.9036140 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 511154 m. | Y-coord: | 7643639 m. |
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| Commodity |
| Main Type: | Graphite | Sub Type: | Graphite flake |
| Production |
| Activity: | Pitting | Reserves: | 250 thousand tons | |
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: | |||
| Resource estimat. standard: | Non compliant |
| Importance |
| Public: | (No data) |
| Economical: | Not classified/evaluated |
Mineralization |
| Era: | Period: | |||
| Dating: | Method: | |||
| Genesis: | Form: | |||
| Main texture: | Min. distribution: |
| Main grain size: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | ||
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Information(s) in free text format |
| Free text |
| At Alsvåg the graphitic rocks mostly occur as small outcrops on the shoreline at low tide. However, a helicopter-borne EM anomaly extends onshore, but outcrops are scarce and have not been found. Structural data suggests this is the same graphite as found on Instøya, and then folds and continue northwest towards Straumen. Five samples from the area (see Figure 8.22) show an average TOC content of 8.0 % and a maximum value of 19.8 % (Table 8.6). The TC values are given i |
Bibliography: |
| From NGU's Reference Archive: |
| Rønning, J.S.;Gautneb, H.; Larsen, B.E.; Baranwal, V.C.; Davidsen, B.; Engvik, A.K.; Gellein, J.; Knezevic, J.; Ofstad, F.; Xiuyan Ren; Viken, G. , 2019 |
| Geophysical and geological investigations of graphite occurrences in Vesterålen, Northern Norway, in 2018 and 2019 |
| ;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2019.031;212 pages |
| Abstract: | |
| Several potential graphite occurrences in Vesterålen were selected for follow-up work based on helicopter-borne geophysical data. The purpose for this is to confirm the existence of the graphite and next to briefly evaluate the quality and quantity of the graphite-bearing structures. The goal for the project, which is sponsored by Nordland county administration, is to increase the knowledge of each individual graphite occurrence. By doing so, the interest in graphite prospecting in Northern Norway may increase, effective prospecting can be implemented, and land planning can be developed with appropriate regard for areas with potential for economic graphite. |
| Gautneb, Håvard; Rønning, Jan Steinar; Engvik, Ane K.; Henderson, Iain H.C.; Larsen, Bjørn Eskil; Solberg, Janja Knezevic; Ofstad, Frode; Gellein, Jomar; Elvebakk; Harald; Davidsen, Børre , 2020 |
| The graphite occurrences of northern Norway, a review of geology, geophysics and resources |
| ;ARTIKKEL;Minerals; No.7(10);24 s. pages |
| Abstract: | |
| Artikkel i Minerals 2020 nr. 7 vol. 10. Abstract: There are three provinces in Northern Norway in which occurrences of graphite are abundant; the Island of Senja, the Vesterålen archipelago, and the Holandsfjorden area. From these provinces, we report graphite resources from 28 occurrences. We use a combination of airborne and ground geophysics to estimate the dimensions of the mineralized areas, and, combined with sampling and analysis of the graphite contents, this gives us inferred resources for almost all the occurrences. The average TC (total carbon) content is 11.6%, and the average size is 9.3 Mt or 0.8 Mt of contained graphite. We demonstrate that the Norwegian graphite occurrences have grades and tonnages of the same order of magnitude as reported elsewhere. The graphite-bearing rocks occur in a sequence that encompasses carbonates, meta-arenites, acid to intermediate pyroxene gneisses, and banded iron formations metamorphosed into the granulite facies. Available radiometric dating shows that the graphite-bearing rocks are predated by Archean gneisses and postdated by Proterozoic intrusions of granitic to intermediate compositions. |
Name of Sample point : BD Øks 19273a |
| (Object Id : 1868,312,00,01) |
| Location |
| County : | Nordland (18) | Municipality : | Øksnes (1868) |
| Map 1:50000: | Myre (1232-4) | Map 1:250000: | Svolvær |
| Marking point: | Longitude: | 15.2776760 | Latitude: | 68.9036140 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 511154 m. | Y-coord: | 7643639 m. |
|
|
| Commodity |
| Main Type: | Graphite | Sub Type: | Graphite flake |
Information(s) in free text format |
| Free text |
| Sample point for sample BD Øks 19273a, Analysis in percent, TC = 1.38, TS = 4.18 TOC = 1.3 Sample point for sample BD Øks 19273b, Analysis in percent, TC = 4.13, TS = 4.47 TOC = 3.29 |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| BD Øks 19273a | Bedrock |
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| BD Øks 19273b | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point : BD Øks 19276a |
| (Object Id : 1868,312,00,02) |
| Location |
| County : | Nordland (18) | Municipality : | Øksnes (1868) |
| Map 1:50000: | Myre (1232-4) | Map 1:250000: | Svolvær |
| Marking point: | Longitude: | 15.2792610 | Latitude: | 68.9029660 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 511218 m. | Y-coord: | 7643567 m. |
|
|
| Commodity |
| Main Type: | Graphite | Sub Type: | Graphite flake |
Information(s) in free text format |
| Free text |
| Sample point for sample BD Øks 19276a, Analysis in percent, TC = 16, TS = 0.0646 TOC = 13 Sample point for sample BD Øks 19276b, Analysis in percent, TC = 3.22, TS = 2.48 TOC = 2.73 |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| BD Øks 19276a | Bedrock |
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| BD Øks 19276b | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point : BD Øks 19281 |
| (Object Id : 1868,312,00,03) |
| Location |
| County : | Nordland (18) | Municipality : | Øksnes (1868) |
| Map 1:50000: | Myre (1232-4) | Map 1:250000: | Svolvær |
| Marking point: | Longitude: | 15.2815900 | Latitude: | 68.9020920 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 511312 m. | Y-coord: | 7643470 m. |
|
|
| Commodity |
| Main Type: | Graphite | Sub Type: | Graphite flake |
Information(s) in free text format |
| Free text |
| Sample point for sample BD Øks 19281, Analysis in percent, TC = 19.8, TS = 0.0427 TOC = 19.8 |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| BD Øks 19281 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1868 - 312 Alsvåg |
Special analyses |
| Sample No. | Sample Type | What is measured | Result |
| BD Øks 19273a | Bedrock | Content of sulfur | 4.18% |
| BD Øks 19273a | Bedrock | Total organic carbon | 1.3% |
| BD Øks 19273a | Bedrock | Total carbon (TC) | 1.38% |
| BD Øks 19273b | Bedrock | Total carbon (TC) | 4.13% |
| BD Øks 19273b | Bedrock | Total organic carbon | 3.29% |
| BD Øks 19273b | Bedrock | Content of sulfur | 4.47% |
| BD Øks 19276a | Bedrock | Total carbon (TC) | 16% |
| BD Øks 19276a | Bedrock | Content of sulfur | .06% |
| BD Øks 19276a | Bedrock | Total organic carbon | 13% |
| BD Øks 19276b | Bedrock | Total carbon (TC) | 3.22% |
| BD Øks 19276b | Bedrock | Content of sulfur | 2.48% |
| BD Øks 19276b | Bedrock | Total organic carbon | 2.73% |
| BD Øks 19281 | Bedrock | Content of sulfur | .04% |
| BD Øks 19281 | Bedrock | Total carbon (TC) | 19.8% |
| BD Øks 19281 | Bedrock | Total organic carbon | 19.8% |
| 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 |