Norsk versjon | |||||
THE ORE DATABASE | |||||
Occurence 5026 - 010 Stømnbekken | |||||
(Object Id: 4402) (Last updated: 07.11.2023) |
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Location |
County: | Trøndelag | Municipality: | Holtålen (5026) |
Map 1:50000: | Ålen (1720-4) | Map 1:250000: | Røros |
Coordinate system: | EU89-UTM Zone 32 |
East: | 637784 m. | North: | 6968837 m. |
Longitude: | 11.7044690 | Latitude: | 62.8236760 |
Show on map |
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Resource |
Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Zinc | |
Element(s): | Zn Pb Cu |
Importance |
Raw material meaning: | Not Assessed (reg. 18.02.2015) |
Resources and production |
Activity: | Pitting | Reserves: | ||
Operating method: | Historical production: |
Mineralization |
Era: | Paleozoic | Period: | Ordovician | |
Genesis: | Volcex | Form: | Lens | |
Main texture: | Structureless | Min. distribution: | Massive (>50 % ore minerals) |
Main grain size: | Fine grained (< 1 mm) | Main alteration: | Chloritisation |
Strike/Dip: | 310 / 80 | Direction: | ||
Plunge: |
Stratigraphic classification of host rock |
Era: | Paleozoic | Period: | Ordovician |
Province: | Caledonides | |
Geotec.unit: | Røros Nappe Complex | |
Tectonic complex: | ||
Igneous complex: |
Group: | Aursund | Formation: |
Mineralogy |
Relationship | Mineral | Amount | |
Gangue mineral | Quartz | Major mineral (>10%) | |
Gangue mineral | Amphibole | Major mineral (>10%) | |
Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
Gangue mineral | Feldspar | Subordinate mineral (1-10%) | |
Ore mineral | Sphalerite | Major mineral (>10%) | |
Ore mineral | Chalcopyrite | Major mineral (>10%) | |
Ore mineral | Pyrrhotite | Major mineral (>10%) |
Lithology: |
Relationship | Rock | Origin | |
Wall rock | Calcareous mica schist | Sedimentary Original rock :Greywacke |
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Metamorphic facies :Greenschist | |||
Wall rock | Metagabbro | Intrusive Original rock :Gabbro |
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Metamorphic facies :Greenschist |
Structures |
Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
Wall rock | Foliation | Strike/Dip :106 / 65 | Post-mineralisation ;...Effect :Modifies |
Information(s) in free text format |
Free text |
Forekomsten ligger over 900 moh og enkleste adkomst er fra Gjårdvollan og sørøstover oppover ryggen mellom to mindre bekker. Det er skutt ut masse fra en 2,5 m høy nordvendt knaus som i hovedsak består av middelskornet gabbro. Gabbro er i kontakt med kvarts-glimmerskifer i nord. Opptil 20 cm brede soner med massive sulfider opptrer i klorittisert og dels silifisert gabbro. Den massive sulfidmalmen er breksjert og består av finkornet sinkblende-blyglans-magnetkis+kobberkis med fragmenter av mafiske bergarter og enkelte kvartsøyne. |
Photo(s) from the Deposit area: |
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Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
ST0199.01 | Dump |
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ST0199.02 | Dump |
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ST0199.03 | Dump |
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399829 | Dump |
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399830 | Dump |
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399831 | Dump |
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NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
from |
Deposit Area 5026 - 010 Stømnbekken |
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# |
ST0199.01 | Dump | 6296 | 99999 | 26749 | 254 | 65 | 57.6 | 105.0 |
ST0199.02 | Dump | 13339 | 77978 | 22493 | 241 | 66 | 48.3 | 101.0 |
ST0199.03 | Dump | 2001 | 78889 | 24070 | 44 | 14 | 68.0 | 113.0 |
399829 | Dump | 8591 | 86000 | 35800 | 164 | 52 | 52.8 | 95.0 |
399830 | Dump | 26000 | 108000 | 34900 | 190 | 60 | 49.5 | 138.0 |
399831 | Dump | 7539 | 79000 | 24000 | 207 | 62 | 37.6 | 105.0 |
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Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
ST0199.01 | 4.0 | 1.0 | 1075 | 239.5 | 17 | 16.00 | 6 | 239 | 29.73 |
ST0199.02 | 1.0 | -1.0 | 375 | 181.6 | 17 | 18.00 | -3 | 186 | 31.13 |
ST0199.03 | 2.0 | 2.0 | 10 | 199.3 | 18 | 17.00 | 5 | 240 | 7.83 |
399829 | 10 | 140.0 | 9 | 4.00 | 5 | 179 | |||
399830 | 223 | 193.5 | 6 | 5.00 | 3 | 171 | |||
399831 | 500 | 132.5 | 4 | 5.00 | 3 | 126 |
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Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
ST0199.01 | 13 | 11 | 376 | 35.02 | 3.00 | -8.00 | 9 | 2.0 | 2.00 |
ST0199.02 | 16 | 11 | 255 | 40.59 | 4.00 | -8.00 | -2 | 1.0 | 2.00 |
ST0199.03 | 24 | 31 | 321 | 5.82 | 2.00 | -8.00 | -2 | 12.0 | 6.00 |
399829 | 9 | 45 | 162 | 10.00 | 4.0 | 0.50 | |||
399830 | 14 | 83 | 276 | 10.00 | 5.0 | 2.00 | |||
399831 | 1 | 26 | 110 | 10.00 | 2.0 | 0.50 |
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Sample No. | B* | Ti* | |||||||
ST0199.01 | 3 | ||||||||
ST0199.02 | -3 | ||||||||
ST0199.03 | -3 | ||||||||
399829 | 120 | ||||||||
399830 | 180 | ||||||||
399831 | 60 |
The fact sheet was created on 25.04.2024 |
Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
Copyright © 2024 Geological Survey of Norway |