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English version | ||||
| MALMDATABASEN | |||||
| Forekomstområde 437 - 016 | |||||
| (Sist oppdatert 08.mai.2006) | |||||
Navn på deposit area : Gløta |
| (Objekt Id : 0437,016,00,00) |
| Lokalisering |
| Fylke : | Hedmark (04) | Kommune : | Tynset (0437) |
| Kart 1:50000: | Kvikneskogen (1619-4) | Kart 1:250000: | Røros |
| Markeringspunkt: | Lengdegrad: | 10.3563580 | Breddegrad: | 62.3777590 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-koord: | 570157 m. | Y-koord: | 6916999 m. |
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| Materialtype |
| Hovedtype: | Jernmetaller (Fe, Mn, Ti) | Subtype: | Jern | |
| Element(s): | Fe |
| Production |
| Activity: | Røsking | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: | 3 m3 |
| Betydning |
| Offentlig: | Little Importance (reg. 18.02.2015) |
| Economical: | Lite viktig |
Operations |
| From - To | Activity | Comments | |
| 1998 - 1998 | Sampling | Company/Institution :NGU |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Vulkeks | Form: | Lag | |
| Main texture: | Båndet | Min. distribution: | Semi-massiv |
| Main grain size: | Finkornet (<1 mm) | Main alteration: | Ingen sidestensomvandling |
| Strike/Dip: | 332 / 50 | Direction: | ||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Trondheim Nappe Complex | |
| Tectonic complex: | Gula Nappe | |
| Igneous complex: |
| Group: | Gula | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Mica | Accessory mineral (<1%) | |
| Ore mineral | Magnetite | Major mineral (>10%) | |
| Ore mineral | Pyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Kvartsitt | Sedimentary Original rock :Exhalite |
|
| Metamorphic facies :Amphibolite | |||
| Wall rock | Amfibolitt | Extrusive Original rock :Basalt |
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| Metamorphic facies :Amphibolite | |||
| Wall rock | Glimmerskifer | Sedimentary Original rock :Greywacke |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Wall rock | Foliation | Strike/Dip :332 / 50 | Post-mineralisation ;...Effect :Modifies |
Opplysning(er) i fritekstformat |
| Fri tekst |
| Et lite skjerp på 1 x 2 m finnes i et område som i stor grad er overdekket, 1.5 km sørvest for Røstvangen gruve. Semi-massive bånd (opptil 2 cm brede) av finkornet magnetitt opptrer i en kvartsittisk bergart med varierende glimmerinnhold. Magnetittmineraliseringen er også noe anriket på mangan (opptil 1.8 % Mn i analyse av syreløst materiale). Den magnetittførende kvartsitten veksler med glimmerskifer og kan være opptil 10-15 m mektig. Et svært lite skjerp i det samme området viser at den også er i kontakt med amfibolitt. |
| Bilde(r) fra forekomstområdet: |
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Bibliography: |
| From NGU's Reference Archive: |
| Nilsen, Odd , 1978 |
| Caledonian sulphide deposits and minor iron-formations from the southern Trondheim region, Norway. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.340;35-85 + k pages |
| Abstract: | |
| Within the southern and central parts of the Trondheim region of the Norwegian Caledonides a great number of small, stratabound cupriferous pyrite deposits are confined to mafic metavolcanics of the Gula, Støren and Fundsjø Groups of the Lower Palaeozoic succession. The deposits occuring within, or in close contact with the metavolcanics are characterized by their association with minor manganiferous oxide/silicate iron-formations - better known as "vasskis" ore type - within the metamorphic low-grade areas. The iron-fprmations of the metamorphic higher grade terrains on the other hand, which are extensively developed within the Gula Group, are mostly of a pyrrhotitic sulphide/silicate type and sulphurization processes are thought to have played an important role during the metamorphism. The pyrite deposits occurring adjacent to the metavolcanics bear no relationship to the iron-formations. They are embedded in pelitic, often carbonaceous assemblages (Gula Group) or within tuffitic members of the volcanogene Støren Group, and they are thought to represent re-sedimented (reworked) deposits. The pyrite deposits display varying degree of metamorphic reconstitution and a tectonic control has apparently determined their disc- or ruler-shaped morphology. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| HE0113.01 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Forekomstområde 437 - 016 Gløta |
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# |
| HE0113.01 | Bedrock | 68 | 38 | 5 | 9 | 60 | .7 | 2.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| HE0113.01 | 2.0 | 3.0 | 1 | .1 | 3 | 0.50 | 2 | 2 | 1.09 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| HE0113.01 | 32 | 7 | 18514 | 14.58 | 2.00 | 4.00 | 3 | 30.0 | 5.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| HE0113.01 | 2 |
| Faktaarket ble generert 10.06.2026 |
| Spørsmål eller kommentarer vedrørende faktaarket kan mailes til: ressursdatabaser@ngu.no |
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