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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1630 - 002 | |||||
| (Last updated 16.feb.2005) | |||||
Name of Deposit Area : Amunddal |
| (Object Id : 1630,002,00,00) |
| Location |
| County : | Sør-Trøndelag (16) | Municipality : | Åfjord (1630) |
| Map 1:50000: | Åfjord (1622-4) | Map 1:250000: | Trondheim |
| Marking point: | Longitude: | 10.4986470 | Latitude: | 63.9265480 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 573489 m. | Y-coord: | 7089692 m. |
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| Commodity |
| Main Type: | Ferrous metals(Fe, Mn, Ti) | Sub Type: | Iron | |
| Element(s): | Fe |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: | 4 m3 |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 16.feb.2005 by Agnes Raaness) |
Operations |
| From - To | Activity | Comments | |
| 1951 - 1991 | Geophysics | Company/Institution :Geofysik Malmleting | |
| 1953 - 1953 | Geophysics |
Mineralization |
| Era: | Period: | |||
| Dating: | Method: | |||
| Genesis: | Volcex | Form: | Ruler | |
| Main texture: | Banded | Min. distribution: | Massive (>50 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: |
| Strike/Dip: | 20 / 45 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Period: |
| Province: | Caledonides | |
| Geotec.unit: | Seve Nappe Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Epidote | Major mineral (>10%) | |
| Gangue mineral | Plagioclase | Major mineral (>10%) | |
| Gangue mineral | Amphibole | Major mineral (>10%) | |
| Gangue mineral | Potassic feldspar | Subordinate mineral (1-10%) | |
| Gangue mineral | Quartz | Subordinate mineral (1-10%) | |
| Ore mineral | Magnetite | Major mineral (>10%) | |
| Ore mineral | Pyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Tuffittisk skifer | Extrusive Original rock :Tuff |
|
| Metamorphic facies :Greenschist | |||
| Host rock | Hornblendeskifer | Extrusive Original rock :Tuff |
|
| Metamorphic facies :Greenschist |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :20 / 45 | Post-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| De første mutinger i feltet ble foretatt i 1909. Fosdalen Bergverk utførte magnetiske målinger i 1951. På vestsiden av Kvitkrakaliklumpen (573570 7089900) står mutingsbolt og stikningspinner, men ingen røskingsarbeider er utført. På stedet er det en del oppvitret magnetitt-mineralisert stein og det er sterke ut- slag på kompasset. I blotning sees to 10 cm mektige lag massiv magnetitt med 3 m avstand (prøve 01 fra øverste lag, 02 fra nederste) i en veksling av hornblendeskifer og båndet, lys tuffittisk skifer med litt magnetitt-disseminasjon. Ved 574690 7090850 er det et 1 cm mektig magnetittbånd i grønnskifer. Ifølge magnetometerkart fra Fosdalen Bergverk skal det være en røsk i dette området. Øst for gården Amunddal (576020 7091450) er det en 3x2 m vannfylt og helt gjengrodd røsk (4 m3 tipp). Mineralisering er ikke observert. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| ST0320.01 | Bedrock |
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| ST0320.02 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Locality : Skjerp 1 |
| (Object Id : 1630,002,01,00) |
| Location |
| County : | Sør-Trøndelag (16) | Municipality : | Åfjord (1630) |
| Map 1:50000: | Åfjord (1622-4) | Map 1:250000: | Trondheim |
| Marking point: | Longitude: | 10.5493550 | Latitude: | 63.9399270 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 575939 m. | Y-coord: | 7091242 m. |
|
|
| Commodity |
| Main Type: | Ferrous metals(Fe, Mn, Ti) | Sub Type: | Iron | |
| Element(s): | Fe |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
Analyse Results |
| from |
| Deposit Area 1630 - 002 Amunddal |
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# |
| ST0320.01 | Bedrock | 83 | 136 | 2 | 7 | 58 | .1 | 8.0 |
| ST0320.02 | Bedrock | 110 | 57 | 4 | 10 | 44 | .1 | 6.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| ST0320.01 | 10.0 | 18.0 | 2 | .9 | 16 | 1.00 | 2 | 2 | .04 |
| ST0320.02 | 13.0 | 25.0 | 2 | .2 | 18 | 1.00 | 4 | 3 | .05 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| ST0320.01 | 83 | 29 | 2253 | 36.10 | 3.00 | 5.00 | 1 | 10.0 | 12.00 |
| ST0320.02 | 109 | 51 | 1620 | 40.30 | 2.00 | 5.00 | 1 | 12.0 | 18.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| ST0320.01 | 3 | ||||||||
| ST0320.02 | 6 |
| The fact sheet was created on 18.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |