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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 2030 - 083 | |||||
| (Last updated 26.jan.2005) | |||||
Name of Deposit Area : Lille Langvatn |
| (Object Id : 2030,083,00,00) |
| Location |
| County : | Finnmark (20) | Municipality : | Sør-Varanger (2030) |
| Map 1:50000: | Kirkenes (2434-2) | Map 1:250000: | Kirkenes |
| Marking point: | Longitude: | 30.0595170 | Latitude: | 69.5855580 |
| EU89-UTM Zone 36 | (Coordinates IS confirmed) |
| X-coord: | 385570 m. | Y-coord: | 7722409 m. |
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| Commodity |
| Main Type: | Ferrous metals(Fe, Mn, Ti) | Sub Type: | Iron | |
| Element(s): | Fe |
| Production |
| Activity: | Exploration | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 26.jan.2005 by Agnes Raaness) |
Operations |
| From - To | Activity | Comments | |
| 1982 - 1985 | Geology | Company/Institution :Prospektering A/S | |
| 1985 - 1985 | Geophysics | Company/Institution :A/S Sydvaranger |
Mineralization |
| Era: | Archean | Period: | ||
| Dating: | Method: | |||
| Genesis: | Sedex | Form: | Layer | |
| Main texture: | Banded | Min. distribution: | Semi-massive (20-50 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: |
| Strike/Dip: | 10 / 60 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Archean | Period: |
| Province: | Troms-Finnmark Basement Province | |
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Bjørnevann Group | Formation: | Fisketind Formation |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Amphibole | Major mineral (>10%) | |
| Ore mineral | Magnetite | Major mineral (>10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Wall rock | Quartzitic mica gneiss | Sedimentary Original rock :Muddy sandstone |
|
| Metamorphic facies :Amphibolite | |||
| Wall rock | Hornblende gneiss | Extrusive Original rock :Basalt |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :10 / 60 | Post-mineralisation ;...Effect :None | |
| Host rock | Primary layering | Strike/Dip :10 / 60 | Syn-mineralisation ;...Effect :Controls |
Information(s) in free text format |
| Free text |
| Malmen har utgående rett sør for Lille Langvatn, ca. 500 m øst for Kjellmannsåsmalmen. Forekomsten ligger slik til at den var tenkbar som tilleggsmalm ved eventuell drift på Kjellmannsåsen. Malmtypen er av tilnærmet Bjørnevannstype, 25 - 32 % Fe magn., men trolig en annen horisont. Malmen er konsentrert i to områder med en tynn forbindelse. Forekomsten ligger isolert og er vanskelig å plassere i en større geologisk sammenheng. Malmen er vurdert for liten (malmareal 15 000 m2) til å være driftsaktuell. |
Bibliography: |
| References not to be found in NGU's Reference Archive.: |
| Iversen, E. 1986: Jernmalmer i Sørvaranger. Int. rapp. 1689. Prospektering A/S. |
| Iversen, E. 1986: Lille Langvann. Int. rapp. 1670. Prospektering A/S. |
| 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 |