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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1663 - 017 | |||||
| (Last updated 16.apr.2020) | |||||
Name of Deposit Area : Ner-Bjørnstadtjønna |
| (Object Id : 1663,017,00,00) |
| Location |
| County : | Sør-Trøndelag (16) | Municipality : | Malvik (1663) |
| Map 1:50000: | Trondheim (1621-4) | Map 1:250000: | Trondheim |
| Marking point: | Longitude: | 10.6969990 | Latitude: | 63.3192060 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 585010 m. | Y-coord: | 7022280 m. |
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| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Sulphides | |
| Element(s): | Kis Fe |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: | 25 m3 |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest |
Mineralization |
| Era: | Paleozoic | Period: | Ordovician | |
| Dating: | Method: | |||
| Genesis: | Volcex | Form: | Layer | |
| Main texture: | Banded | Min. distribution: | Massive (>50 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: |
| Strike/Dip: | 45 / 35 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Paleozoic | Period: | Ordovician |
| Province: | Caledonides | |
| Geotec.unit: | Trondheim Nappe Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: | Støren greenstone |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Mica | Subordinate mineral (1-10%) | |
| Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) | |
| Ore mineral | Magnetite | Major mineral (>10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Chert | Sedimentary Original rock :Exhalite |
|
| Metamorphic facies :Greenschist | |||
| Wall rock | Greenschist | Extrusive Original rock :Basalt |
|
| Metamorphic facies :Greenschist |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Wall rock | Foliation | Strike/Dip :292 / 30 | Post-mineralisation ;...Effect :Modifies | |
| Wall rock | Foliation | Strike/Dip :338 / 35 | Post-mineralisation ;...Effect :Modifies | |
| Wall rock | Mineral lineation | Dir./Plunge :105 / 30 | Post-mineralisation ;...Effect :Modifies |
Information(s) in free text format |
| Free text |
| Et skjerp ligger langs en mindre rygg rett øst for en bekk i sørøstenden av Ner Bjørnstadtjønna. Ryggen domineres av sterkt deformert grønnskifer med varierende foliasjon. Mineraliseringen består av vekslende bånd/lag av massiv, finkornet pyritt (’vasskis’), chert med disseminasjon av pyritt og semi-massiv til massive magnetitt. Mektigheten på både sulfid- og magnetittrike lag er omtrent en meter. |
| Photo(s) from the Deposit area: |
|
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| JS97014 | Dump |
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| JS97015 | Bedrock |
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| JS97016 | Dump |
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| JS97017 | Dump |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1663 - 017 Ner-Bjørnstadtjønna |
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# |
| JS97014 | Dump | 176 | 79 | 66 | 8 | 86 | -.3 | 8.0 |
| JS97015 | Bedrock | 38 | 111 | 57 | 2 | 38 | .3 | 5.0 |
| JS97016 | Dump | 53 | 44 | 6 | 3 | 16 | -.3 | 2.0 |
| JS97017 | Dump | 67 | 62 | 9 | 2 | 17 | -.3 | -1.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| JS97014 | 2.0 | -1.0 | 273 | -.2 | 7 | 25.00 | -3 | -3 | 27.59 |
| JS97015 | 4.0 | 2.0 | 7 | 1.9 | 122 | -1.00 | -3 | -3 | .39 |
| JS97016 | -1.0 | -1.0 | 101 | -.2 | 6 | 6.00 | -3 | -3 | 3.59 |
| JS97017 | 2.0 | -1.0 | 30 | -.2 | 2 | 4.00 | -3 | -3 | 4.78 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| JS97014 | 239 | 43 | 393 | 30.09 | 6.00 | -8.00 | 2 | 6.0 | 2.00 |
| JS97015 | 156 | 28 | 3344 | 30.73 | 3.00 | -8.00 | -2 | 552.0 | 12.00 |
| JS97016 | 63 | 7 | 363 | 7.13 | -2.00 | -8.00 | -2 | 8.0 | 1.00 |
| JS97017 | 47 | 11 | 501 | 11.51 | -2.00 | -8.00 | -2 | 18.0 | 1.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| JS97014 | -3 | ||||||||
| JS97015 | -3 | ||||||||
| JS97016 | -3 | ||||||||
| JS97017 | -3 |
| The fact sheet was created on 19.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |