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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 2018 - 004 | |||||
| (Last updated 12.apr.2007) | |||||
Name of Deposit Area : Vestre Middagsfjellet |
| (Object Id : 2018,004,00,00) |
| Location |
| County : | Finnmark (20) | Municipality : | Måsøy (2018) |
| Map 1:50000: | Snøfjorden (1936-1) | Map 1:250000: | Honningsvåg |
| Marking point: | Longitude: | 24.3536880 | Latitude: | 70.8209710 |
| EU89-UTM Zone 35 | (Coordinates IS confirmed) |
| X-coord: | 402997 m. | Y-coord: | 7859546 m. |
|
|
| 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 03.feb.2005 by Peter Ihlen) |
Operations |
| From - To | Activity | Comments | |
| 1902 - 1902 | Sampling | ||
| 1989 - 1989 | Sampling | Company/Institution :NGU |
Mineralization |
| Era: | Paleozoic | Period: | Devonian | |
| Dating: | Method: | |||
| Genesis: | Hydrothermal vein | Form: | Plate | |
| Main texture: | Fracture filling | Min. distribution: | Massive (>50 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: |
| Strike/Dip: | 160 / 90 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Mesoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Kalak Nappe Complex | |
| Tectonic complex: | Snøfjorddekket | |
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Ore mineral | Magnetite | Major mineral (>10%) | |
| Ore mineral | Hematite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Granat-biotittgneis | Sedimentary Original rock :Greywacke |
|
| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :265 / 25 | Pre-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| Forekomsten opptrer i nordlia av Vestre Middagsfjell (ca. 250 moh.), i et parti med mye ur og blokkmark. Det meste av mineraliseringen omfatter derfor blokker av opptil 0,5 m brede ganger av melkekvarts som er svakt mineralisert. De fører cm-brede og massive Fe-oksydårer og nettverk av slike. De mørke årene er finkornete og består av magnetitt, litt hematitt og aksessorisk svovelkis, samt stedvis steinmel (kataklasitt-åre). To parallelle NV-SØ-strykende kvartsganger er mineralisert, og de gjennomsetter migmatittiske granat-biotittgneiser. |
Bibliography: |
| From NGU's Reference Archive: |
| Gayer, R.A.; Hayes, S.J.; Rice, A.H.N. , 1985 |
| The structural development of the Kalak Nappe Complex of Eastern and Central Porsangerhalvøya, Finnmark, Norway. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU Bulletin; No.400;67-87 pages |
| Abstract: | |
| Lithological and structural mapping of Porsangerhalvøya has revealed eight major thrust units within the Kalak Nappe Complex. Five deformation phases have been recognised: D1 produced a foliation preserved within garnet pophyroblasts which grew during prograde metamorphism. Peak metamorphism occurred during D2 and culminated in upper amphibolite facies in the higher nappes and uppermost greenschist facies in the lower nappes. Staurolite porphyroblasts, pseudomorphed first by muscovite and then by kyanite also developed during prograde metamorphism between D1 and D2. D2 formed tight to isoclinal recumbent folds with an associated axial planar regional schistosity (S2) and mineral lineation as well as boudinage structures. D3 and D4 represent less ductile deformations, with associated retrograde staurolite, chloritoid, garnet and biotite porphyroblastesis. Thrusting, initiated as a ductile process during D2, continued into D4 with a decreasing ductile component, producing major nappe translations and an inverted metamorphic sequence. The metamorphism and associated deformation and thrusting is thought to have occurred during the late Cambrian to earliest Ordovician Finnmarkian orogenic event. |
| Wennberg, Johan , 1955 |
| Rapport over befaring av jernmalmforekomst ved Skjerhattevik på halvøya mellom Snøfjord og Revsbotn i Måsøy herred. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 2118;1 pages |
| Abstract: | |
| Rapporten omhandler befaring av jernmalmforekomsten. En prøve viser 71,2 % Fe tot. Mineraliseringen ligger i gneiser og glimmerskifer som er gjennomsatt av smale kvarts- og pegmatittganger. Den er uten økonomisk interesse,(1955). |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| HO-27-48 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 2018 - 004 Vestre Middagsfjellet |
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# |
| HO-27-48 | Bedrock | 1899 | 55 | 11 | 12 | 24 | 1.6 | 2.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | Rh# | As* | Cd* | Ba* | Mo* | Sb* | Bi* |
| HO-27-48 | 1.0 | 2.0 | 2.0 | 4 | 1.0 | 14 | 2.00 | 6 | 2 |
| ------------------ |
| Sample No. | S% | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* |
| HO-27-48 | .02 | 39 | 13 | 274 | 3.75 | 1.00 | 5.00 | 1 | 2.0 |
| ------------------ |
| Sample No. | La* | B* | Na* | Mg* | Al* | P* | K * | Ca* | Ti* |
| HO-27-48 | 2.00 | 3 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
| The fact sheet was created on 22.11.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |