(Last updated: 25.02.2005)
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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 5530 - 002 Gryllefjordbotn | |||||
| (Object Id: 1396) (Last updated: 25.02.2005) |
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| Location |
| County: | Troms | Municipality: | Senja (5530) |
| Map 1:50000: | Gryllefjord (1333-1) | Map 1:250000: | Tromsø |
| Coordinate system: | EU89-UTM Zone 33 |
| East: | 588043 m. | North: | 7693715 m. |
| Longitude: | 17.2362420 | Latitude: | 69.3385080 |
| Show on map |
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| Resource |
| Resource Type: | Ferroalloys (Cr,Ni,Co,V,Mo,W) | Resource Subtype: | Nickel | |
| Element(s): | Ni Cu Co |
| Importance |
| Raw material meaning: | Little Importance (reg. 18.02.2015) |
| Resources and production |
| Activity: | Pitting | Reserves: | ||
| Operating method: | Historical production: |
Mineralization |
| Era: | Proterozoic | Period: | Paleoproterozoic | |
| Genesis: | Orthomagmatic formation | Form: | Lens | |
| Main texture: | Structureless | Min. distribution: | Disseminated (<20 % ore minerals) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Paleoproterozoic |
| Province: | Caledonian Basement Province | |
| Geotec.unit: | West-Troms Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Amphibole | Major mineral (>10%) | |
| Gangue mineral | Plagioclase | Subordinate mineral (1-10%) | |
| Gangue mineral | Biotite | Accessory mineral (<1%) | |
| Ore mineral | Pyrrhotite | Major mineral (>10%) | |
| Ore mineral | Pyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Pentlandite | Subordinate mineral (1-10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | gabbro | Intrusive Original rock :Gabbro |
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| Metamorphic facies :Amphibolite | |||
| Wall rock | granitt | Intrusive Original rock :Granite |
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| Metamorphic facies :Amphibolite |
Information(s) in free text format |
| Free text |
| The pit at UTM coordinates 588110 7693920 is 3H2m wide and 1m deep, and has produced 5m3 of tailings. The pit is located where the mineralized gabbro lense is thickest at about 5m. The medium grained hornblende gabbro hosts disseminated pyrrhotite, pyrite, chalcopyrite, and pentlandite (samples 01,02,03). Locally, the sulphides occur as lumps (sample 04). A 15m more toward the N, another pit of 1m3 has been blasted in the same mineralized lense. Between these two pits, a 3m thick granitic vein cuts through the gabbro. The mineralization can be followed over a NS running stretch of 30-40m length. The surrounding country rock also consists of gabbro, intensely cross cut by granitic veins in different orientations. |
Bibliography: |
| From NGU's Reference Archive: |
| Johns, J. , 1919 |
| Ostervandets kisforekomst, Senja. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 1247;1 pages |
| Abstract: | |
| Forekomsten er en sparsom impregnasjon av magnetkis, svovelkis og spor av kobberkis som ligger i gabbro og dioritt. Det sies at den er uten betydning. |
| Simon ? , 1944 |
| Befahrungsbericht uber das gemeldete erzvorkommen im Gryllefjord (Ostervann). |
| ;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 859;1 pages |
| Abstract: | |
| Forekomstens beliggenhet blir godt beskrevet ved hjelp av skisse. Den består av svovelkis og magnetkis som ligger et lag på 0,3 m i en hornblendegranitt. det sies at forekomsten "ist derzeit ohne intresse"! |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| TR0449.01 | Bedrock |
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| TR0449.02 | Bedrock |
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| TR0449.03 | Bedrock |
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| TR0449.04 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 5530 - 002 Gryllefjordbotn |
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# |
| TR0449.01 | Bedrock | 1640 | 28 | 7 | 109 | 280 | -1.0 | 6.0 |
| TR0449.02 | Bedrock | 2830 | 37 | -81 | 236 | 765 | -16.2 | 13.0 |
| TR0449.03 | Bedrock | 4180 | 35 | 97 | 496 | 1930 | -16.2 | 10.0 |
| TR0449.04 | Bedrock | 2520 | -32 | -81 | 741 | 1760 | -16.2 | 74.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sn* | Sb* | Bi* |
| TR0449.01 | 7.0 | 10.0 | -20 | -1.0 | 178 | 1.35 | -20 | -20 | -20 |
| TR0449.02 | 7.0 | 15.0 | -20 | -16.2 | 131 | -16.20 | -20 | -20 | -20 |
| TR0449.03 | 63.0 | 52.0 | -20 | -16.2 | 113 | -16.20 | -20 | -20 | -20 |
| TR0449.04 | 10.0 | 48.0 | -20 | -16.2 | 122 | -16.20 | -20 | -20 | -20 |
| ------------------ |
| Sample No. | S% | V* | Cr* | Mn* | Fe% | Th* | U* | Sr* | La* |
| TR0449.01 | 2.54 | 49 | 57 | 254 | 6.10 | -30.00 | -30.00 | 90.1 | 1.79 |
| TR0449.02 | 6.60 | 41 | 59 | 308 | 11.70 | -30.00 | -30.00 | 94.5 | -16.20 |
| TR0449.03 | 14.30 | 69 | -16 | 243 | 26.50 | -30.00 | -30.00 | 67.9 | -16.20 |
| TR0449.04 | 14.60 | 60 | 33 | 238 | 25.60 | -30.00 | -30.00 | -32.4 | -16.20 |
| ------------------ |
| Sample No. | B* | ||||||||
| TR0449.01 | -5 | ||||||||
| TR0449.02 | -81 | ||||||||
| TR0449.03 | -81 | ||||||||
| TR0449.04 | -81 |
| The fact sheet was created on 07.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |