(Last updated: 17.01.1997)
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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 5026 - 018 Rognså | |||||
| (Object Id: 4411) (Last updated: 17.01.1997) |
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| Location |
| County: | Trøndelag | Municipality: | Holtålen (5026) |
| Map 1:50000: | Haltdalen (1620-1) | Map 1:250000: | Røros |
| Coordinate system: | EU89-UTM Zone 32 |
| East: | 611528 m. | North: | 6964482 m. |
| Longitude: | 11.1867270 | Latitude: | 62.7935660 |
| Show on map |
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| Resource |
| Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Copper | |
| Element(s): | Kis Cu |
| Importance |
| Raw material meaning: | Not Assessed (reg. 18.02.2015) |
| Resources and production |
| Activity: | Test mining | Reserves: | ||
| Operating method: | Open pit and underground mining | Historical production: |
Operations |
| From - To | Activity | Comments | |
| 1840 - 1850 | Test mining | ||
| 1865 - 1865 | Regular production | Company/Institution :Løytnant From |
Mineralization |
| Era: | Paleozoic | Period: | Ordovician | |
| Genesis: | Sedex | Form: | Plate | |
| Main texture: | Banded | Min. distribution: | Semi-massive (20-50 % ore minerals) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: | Chloritisation |
| Strike/Dip: | 190 / 50 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Paleozoic | Period: | Ordovician |
| Province: | Caledonides | |
| Geotec.unit: | Trondheim Nappe Complex | |
| Tectonic complex: | Meråkerdekket | |
| Igneous complex: |
| Group: | Dalsbygdgruppen | Formation: | Kjurudalsformasjonen |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Chlorite | Major mineral (>10%) | |
| Ore mineral | Pyrrhotite | Major mineral (>10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) | |
| Ore mineral | Chalcopyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Biotittskifer | Sedimentary Original rock :Siltstone |
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| Metamorphic facies :Greenschist |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Primary layering | Strike/Dip :190 / 50 | Syn-mineralisation ;...Effect :Controls |
Information(s) in free text format |
| Free text |
| Forekomsten består av to nærliggende (10 m) synker 50 m fra fylkesveien i Hessdalen, i en tett bevokst bekkedal (Rognsåa). Lite fast fjell å se, malmprøver finnes vesentlig i noen små tipphauger. Hovedmalmen er angitt å være 0.5 m mektig. Retningen stemmer noenlunde med en eventuell fortsettelse av Hessdalsgruva. Dette bekreftes til en viss grad av elektromagnetiske målinger utført i 1948. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||
| ST0209.01 | Bedrock |
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| ST0209.02 | Bedrock |
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| ST0209.03 | Bedrock |
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| The fact sheet was created on 05.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |