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Norsk versjon | ||||
| THE INDUSTRIAL MINERAL DATABASE | |||||
| Deposit Area 1805 - 315 | |||||
| (Last updated 29.mai.2007) | |||||
Name of Deposit Area : Jouvvacorrú |
| (Object Id : 1805,315,00,00) |
| Location |
| County : | Nordland (18) | Municipality : | Narvik (1805) |
| Map 1:50000: | Skjomdalen (1431-3) | Map 1:250000: | Narvik |
| Marking point: | Longitude: | 17.5666790 | Latitude: | 68.0798170 |
| EU89-UTM Zone 33 |
| X-coord: | 606903 m. | Y-coord: | 7553985 m. |
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| Commodity |
| Main Type: | Silica | Sub Type: | Quartzite |
| Production |
| Activity: | Exploration | Reserves: | 150 thousand tons | |
| Prod. method: | Production: | |||
| Prod. status: | Not yet active | Volume of dump: |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 28.sep.2006 by Axel Muller) |
Mineralization |
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| Dating: | Method: | |||
| 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 |
| About 16 small lens-shaped bodies (20 to 140 m in length) of kyanite quartzite are located 20 km SSE of the village Skjomen in northern Norway, 10 km S of the southern end of the Skjomendalen. The rocks are exposed at a high plateau called Juovva¿orrú ca. 1000 m a.s.l.. The kyanite quartzites belong to the Sørdalen supracrustal belt, which is part of the Palaeoproterozoic Rombak basement window (Korneliussen and Sawyer 1989). The kyanite quartzite occurrences are limited to a 3.5 km long, steep dipping, lens-shape body of volcanites at the southeastern edge of the Sørdalen Supracrustal Belt. The sequence of the Sørdalen Supracrustal Belt is mainly composed of porphyritic, mafic, intermediate and felsic volcanites. Lenses of kyanite quartzites are tectonically intercalated within the volcanic rocks. The rocks are assumed to have ages between 1.91 and 1.88 Ga (Korneliussen and Sawyer 1989). The rocks of the Sørdalen Supracrustal Belt were metamorphosed under amphibolite facies conditions at 6 kbar and ca. 575°C (Sawyer 1986). The age of the prograde metamorphism is unknown. Occasionally, the rocks were effected by greenschist-facies metamorphism related to the Caledonian deformation. The kyanite content of the Juovva¿orrú deposit is below 25 wt.% and quartz varies from 75 to 98 wt.%. Accessory minerals are rutile and zircon. The average crystal size of quartz is 0.247 mm (200 measurements). Quartz has planar grain boundaries and occasionally 120° triple-junctions between grains. It contains commonly tiny rutile needles. Kyanite plates are about 160 µm in length. The crystals contain common quartz inclusions. Quartz from the Juovva¿orrú kyanite quartzites has low average Al of 10.5 ppm and of Ti with 2.9 ppm (6 analyses). Concentrations of Ge and Be are about 0.8 and 0.1 ppm, repectively. Li, B, Mn, K, Ca and Fe are generally below the limit of detection. The quartz of the Juovva¿orrú kyanite quartzite is the purest among the Norwegian kyanite quartzite deposits. |
| Photo(s) from the Deposit area: |
Bibliography: |
| References not to be found in NGU's Reference Archive.: |
| Korneliussen, A., Sawyer, E.W. 1989. The geochemistry of Lower Proterozoic mafic to felsic igneous rocks, Rombak Window, North Norway. Norges Geologiske Undersøkelse Bull. 415: 7-21. |
| Müller, A., Wanvik, J.E., Kronz, A. (2005): Norwegian kyanite quartzites - potential resources of high purity quartz? Norges geologiske undersøkelse, Rapport 2005.039. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||||
| NO0421.R1021a | Bedrock |
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| NO0421.R1021b | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1805 - 315 Jouvvacorrú |
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* |
| NO0421.R1021a | Bedrock | -10 | 15 | -10 | -5 | -5 | 5 | -10 |
| NO0421.R1021b | Bedrock | -10 | 10 | -10 | -5 | -5 | -5 | 10 |
| ------------------ |
| Sample No. | Mo* | Ga* | S% | V* | Cr* | Th* | W* | Sr* | Y* |
| NO0421.R1021a | -5.00 | 31.00 | -.10 | 21 | 42 | -5.00 | 48 | -5.0 | -5.0 |
| NO0421.R1021b | -5.00 | -10.00 | -.10 | -10 | 13 | 5.00 | 51 | -5.0 | -5.0 |
| ------------------ |
| Sample No. | Zr* | Nb* | La* | Ce* | Pr* | Nd* | Sc* | Hf* | |
| NO0421.R1021a | 73 | 33.00 | -10.00 | -10.00 | -10.00 | -10.00 | 5.00 | -10.00 | |
| NO0421.R1021b | 155 | 16.00 | -10.00 | -10.00 | -10.00 | -10.00 | -5.00 | -10.00 |
Mineral analyses |
( All values are in ppm. Negative values means below detection limit value.) |
| Sample No. | Sample Type | Mineral | Li | Be | B |
| NO0421.R1021b | Bedrock | Quartz | -2.000 | 1.100 | -6.000 |
| NO0421.R1021b | Bedrock | Quartz | -2.000 | -.100 | -6.000 |
| NO0421.R1021b | Bedrock | Quartz | -2.000 | .100 | -6.000 |
| NO0421.R1021b | Bedrock | Quartz | 2.400 | .100 | -6.000 |
| NO0421.R1021b | Bedrock | Quartz | -2.000 | -.100 | -6.000 |
| NO0421.R1021b | Bedrock | Quartz | -2.000 | .100 | -6.000 |
| ------------------ |
| Sample No. | Na | Al | P | K | Ca | Ti | Mn | Fe | Ge |
| NO0421.R1021b | -400.000 | 5.300 | -13.000 | -70.000 | -70.000 | 6.100 | 2.400 | -1.000 | .800 |
| NO0421.R1021b | -400.000 | 6.200 | -13.000 | -10.000 | -70.000 | 2.900 | -.800 | -1.000 | -.700 |
| NO0421.R1021b | -400.000 | 14.600 | -13.000 | -10.000 | -70.000 | 2.400 | -.800 | -1.000 | 1.000 |
| NO0421.R1021b | -400.000 | 12.800 | -13.000 | -10.000 | -70.000 | 5.800 | .800 | -1.000 | .800 |
| NO0421.R1021b | -400.000 | 12.000 | -13.000 | -10.000 | -70.000 | .200 | -.800 | -1.000 | .800 |
| NO0421.R1021b | -400.000 | 12.000 | -13.000 | -10.000 | -70.000 | .200 | 1.000 | -1.000 | -.700 |
Oxide analyses |
( All values are in % ) |
| Sample No. | Sample Type | SiO2 | Al2O3 | TiO2 | Fe2O3 | MnO | MgO | CaO |
| NO0421.R1021a | Bedrock | 77.68 | 20.80 | 0.18 | 0.09 | -0.01 | 0.03 | -0.01 |
| NO0421.R1021b | Bedrock | 98.56 | 0.19 | 0.84 | 0.09 | -0.01 | -0.01 | -0.01 |
| ------------------ |
| Sample No. | Na2O | K2O | P2O5 | Loss | Sum | ||||
| NO0421.R1021a | -0.10 | 0.05 | 0.02 | 0.21 | 99.00 | ||||
| NO0421.R1021b | -0.10 | 0.03 | -0.01 | 0.15 | 100.00 |
| The fact sheet was created on 17.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
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