(Last updated: 18.04.2013)
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Norsk versjon | ||||
| THE INDUSTRIAL MINERAL DATABASE | |||||
| Occurence 3419 - 301 Knøsberget | |||||
| (Object Id: 17337) (Last updated: 18.04.2013) |
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| Location |
| County: | Innlandet | Municipality: | Våler (3419) |
| Map 1:50000: | Kynna (2016-1) | Map 1:250000: | Hamar |
| Coordinate system: | EU89-UTM Zone 32 |
| East: | 657453 m. | North: | 6739983 m. |
| Longitude: | 11.8904260 | Latitude: | 60.7641370 |
| Show on map |
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| Resource |
| Resource Type: | Silica | Resource Subtype: | Quartzite |
| Importance |
| Raw material meaning: | Little Importance (reg. 18.02.2015) |
| Resources and production |
| Activity: | Exploration | Reserves: | 15 thousand tons | |
| Operating method: | Historical production: |
Mineralization |
| Genesis: | Form: | |||
| Main texture: | Min. distribution: |
| Main grain size: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | ||
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| Igneous complex: |
| Group: | Formation: |
Information(s) in free text format |
| Free text |
| The kyanite quartzite of Knøsberget is one of the four major occurrences of kyanite quartzites in the Solør area. The deposit is hosted in Middle to Upper Proterozoic fine- to medium-grained granitic gneisses of the Solør Complex. The granitic gneisses are assumed to have ages of 1.6 to 1.8 Ga. (Nordgulen 1999). The Knøsberget deposit is situated in a dome-like gneiss structure, close (5 to 10 km) to the rocks of the NNW-SSE striking units of the "Oslofield" in the west. The units of the "Oslofield" comprises here metarhyolites, metatuffs and monzodioritic augengneiss. The deposit is in close relationship with metagabbros and fine-grained amphibolites (hyperites). The Knøsberget deposit forms a kinked lens with a total length of 2.2 km at the NW end of the Knøsberget plateau (355 m a.s.l.). The deposit is situated about 7 km by road from Braskereidfoss which lies at the state road 20. The western WSW-ENE striking part of the lens is 1.2 km long and consists predominantly of pyrophyllite quartzite. The NE-SW striking and 1 km long eastern part comprises alternating layers of kyanite quartzite and pyrophyllite quartzite with minor intercalations of mafic gneiss. Here the lens is up to 200 m wide and dips 70-80° northwestward. The average content (18 samples) of quartz, kyanite and rutile amounts 74, 23.1 and 0.59 wt.%, respectively, in the kyanite quartzite from Knøsberget (Jakobsen and Nielsen 1977). Al in quartz from the Knøsberget kyanite quartzite varies from 16 to 21 ppm (3 LA-ICP-MS analyses) and Ti from 0.2 to 4 ppm, which is remarkably low. Li, Be, B, Mn, Ge, K, Ca and Fe are generally below the limit of detection. |
| Photo(s) from the Deposit area: |
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Bibliography: |
| From NGU's Reference Archive: |
| Müller, Axel ; Wanvik, Jan Egil ; Kronz, Andreas , 2005 |
| Norwegian kyanite quartzites - potential resources of high purity quartz? |
| ;Norges geologiske undersøkelse;RAPPORT;NGU-rapport; No.2005.039;70 s. pages |
| Abstract: | |
| Forkortet: This study represents an evaluation of Norwegian kyanite quartzite occurrences as potential deposits of high purity quartz raw material. Kyanite quartzites are rare fine-grained with 70 to 85 vol. % quartz and > 15 vol. % kyanite (Al2SiO5) which occur in Proterozoic supracrustal rock units. Kyanite quartzites form stratiform lens-shaped bodies, which can extend several kilometers. |
| Nordgulen, Øystein , 1999 |
| Hamar. Berggrunnskart Hamar M 1:250 000; trykt i farger |
| ;Norges geologiske undersøkelse;KART;1 kart pages |
| Abstract: | |
| Beskrivelsen finnes på kartet. |
| References not to be found in NGU's Reference Archive.: |
| Müller, A., Wanvik, J.E., Kronz, A. (2005): Norwegian kyanite quartzites - potential resources of high purity quartz? Norges geologiske undersøkelse, Rapport 2005.039. |
| Gvein, Ø., Skålvoll, H., Sverdrup, T. 1974. Geologisk kart over Norge, Berggrunnskart Torsby, M 1 : 250.000. Norges Geologiske Undersøkelse. |
| Jakobsen, B.M., Nielsen, E. 1977. Kyanite kvartsit projektet 1976-1977. Laboratorienrapport. Endogen Laboratorium. Geol Institut Århus Universitet. p.19. |
| Nordgulen, Ø. 1999. Geologisk kart over Norge, Berggrunnskart Hamar, M 1 : 250.000. Norges geologiske undersøkelse. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||||
| 2907408 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 3419 - 301 Knøsberget |
Element analyses |
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.) |
| Sample No. | Sample Type | Cu* | Zn* | Pb* | Co* | Ni* | As* | Ba* |
| 2907408 | Bedrock | -10 | 8 | -10 | 8 | -5 | -5 | 74 |
| ------------------ |
| Sample No. | Mo* | Ga* | S% | V* | Cr* | Th* | W* | Sr* | Y* |
| 2907408 | -5.00 | -10.00 | .32 | 19 | 17 | 7.00 | 24 | -5.0 | -5.0 |
| ------------------ |
| Sample No. | Zr* | Nb* | La* | Ce* | Pr* | Nd* | Sc* | Hf* | |
| 2907408 | 119 | 15.00 | -10.00 | -10.00 | -10.00 | -10.00 | 47.00 | -10.00 |
Mineral analyses |
( All values are in ppm. Negative values means below detection limit value.) |
| Sample No. | Sample Type | Mineral | Li | Be | B |
| 2907408 | Bedrock | Quartz | -1.000 | -2.000 | -3.000 |
| 2907408 | Bedrock | Quartz | -1.000 | -2.000 | -3.000 |
| 2907408 | Bedrock | Quartz | -1.000 | -2.000 | 3.600 |
| ------------------ |
| Sample No. | Na | Al | P | K | Ca | Ti | Mn | Fe | Ge |
| 2907408 | -100.000 | 20.400 | -5.000 | -3.000 | -60.000 | .300 | -.300 | -2.000 | -.500 |
| 2907408 | -100.000 | 20.900 | -5.000 | -3.000 | 72.000 | 3.800 | -.300 | -2.000 | -.500 |
| 2907408 | -100.000 | 15.900 | -5.000 | -3.000 | -60.000 | .200 | .400 | -2.000 | -.500 |
Oxide analyses |
( All values are in % ) |
| Sample No. | Sample Type | SiO2 | Al2O3 | TiO2 | Fe2O3 | MnO | MgO | CaO |
| 2907408 | Bedrock | 75.89 | 19.39 | 0.23 | 0.71 | -0.01 | 0.05 | -0.01 |
| ------------------ |
| Sample No. | Na2O | K2O | P2O5 | Loss | Sum | ||||
| 2907408 | -0.10 | 0.05 | 0.04 | 1.74 | 98.00 |
| The fact sheet was created on 01.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |