(Last updated: 03.05.2023)
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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 5026 - 009 Ledalen | |||||
| (Object Id: 4401) (Last updated: 03.05.2023) |
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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: | 605435 m. | North: | 6979667 m. |
| Longitude: | 11.0769540 | Latitude: | 62.9315720 |
| Show on map |
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| Resource |
| Resource Type: | Ferroalloys (Cr,Ni,Co,V,Mo,W) | Resource Subtype: | Molybdenium | |
| Element(s): | Mo |
| Importance |
| Raw material meaning: | Little Importance (reg. 18.02.2015) |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Operations |
| From - To | Activity | Comments | |
| 1959 - 1959 | Pitting | Company/Institution :Ole Larsen Rønningen | |
| 1997 - 1997 | Sampling | Company/Institution :NGU |
Mineralization |
| Era: | Paleozoic | Period: | Ordovician | |
| Genesis: | Orthomagmatic formation | Form: | Irregular | |
| Main texture: | Fracture filling | 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: | Paleozoic | Period: | Ordovician |
| Province: | Caledonides | |
| Geotec.unit: | Trondheim Nappe Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Gula | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Feldspar | Major mineral (>10%) | |
| Gangue mineral | Muscovite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) | |
| Ore mineral | Molybdenite | Major mineral (>10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Leukogranitt | Intrusive Original rock :Granite |
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| Wall rock | Hornblende-biotittskifer | Sedimentary | |
| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Wall rock | Foliation | Strike/Dip :188 / 65 | Pre-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| Skjerpet ligger nær og på østsida av veien oppover dalen. Det består av en utsprengt grop med sidevegger på 3 x 3 m. Molybdenglans og pyritt finnes disseminert og i aggregater langs stikk og uregelmessige sprekker i kvartsrik, lys trondhjemittisk bergart. Mineraliseringens utstrekningen er vanskelige å bestemme. Middelskornet hornblende-biotitt skifer med foliasjon 188¿/65¿ er blottet 10 m sør for skjerpet. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| ST0198.02 | Dump |
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| ST0198.03 | Dump |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: Ledalen |
| (Object Id: 10016 9,00,01) |
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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: | 605415 m. | North: | 6979657 m. |
| Longitude: | 11.0765540 | Latitude: | 62.9314880 |
| Show on map |
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| Resource |
| Resource Type: | Ferroalloys (Cr,Ni,Co,V,Mo,W) | Resource Subtype: | Molybdenium | |
| Element(s): | Mo |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| ST0198.01 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 5026 - 009 Ledalen |
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# |
| ST0198.01 | Bedrock | 68 | 7 | 7 | 4 | 8 | -.3 | 2.0 |
| ST0198.02 | Dump | 8 | 17 | 12 | 3 | 7 | -.3 | 2.0 |
| ST0198.03 | Dump | 23 | 23 | 18 | 30 | 75 | -.3 | -1.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| ST0198.01 | 1.0 | -1.0 | -2 | -.2 | 6 | 1.00 | -3 | -3 | .22 |
| ST0198.02 | -1.0 | -1.0 | -2 | .2 | 7 | 4410.00 | -3 | -3 | .60 |
| ST0198.03 | -1.0 | -1.0 | 2 | -.2 | 8 | 175.00 | -3 | -3 | 3.29 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| ST0198.01 | 1 | 2 | 55 | .61 | -2.00 | -8.00 | -2 | 10.0 | 1.00 |
| ST0198.02 | 4 | 9 | 45 | .49 | 7.00 | -8.00 | -2 | 7.0 | 12.00 |
| ST0198.03 | 14 | 53 | 99 | 3.60 | 2.00 | -8.00 | -2 | 14.0 | 2.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| ST0198.01 | -3 | ||||||||
| ST0198.02 | -3 | ||||||||
| ST0198.03 | -3 |
| The fact sheet was created on 20.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |