Fact Sheet for <b>Occurence 0

					Norsk versjon
	THE ???? DATABASE
	Occurence 0 - 000 FEIL
	(Object Id: ) (Last updated: 16.02.2005)

Location

County:

Municipality:

Mangler ()

Map 1:50000:

Oppdal (1520-3)

Map 1:250000:

Røros

Coordinate system:

UTM-Zone 33 - EUREF89/WGS84

East:

536130 m.

North:

6956140 m.

Longitude:

9.7084320

Latitude:

62.7342360

Show on map

Resource

	Resource Type:	Ferrous metals(Fe, Mn, Ti)	Resource Subtype:	Iron
			Element(s):	Fe

Importance

Raw material meaning:

Not Assessed (reg. 18.02.2015)

Resources and production

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Operations

From - To Activity Comments

1997 - 1997 Sampling Company/Institution :NGU-Malmreg.

Mineralization

Genesis: Volcex Form:

Main texture: Structureless Min. distribution: Disseminated (<20 % ore minerals)

Main grain size: Fine grained (< 1 mm) Main alteration:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province: Caledonides

Geotec.unit: Trondheim Nappe Complex

Tectonic complex: Støren Nappe

Igneous complex:

Group: Støren Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Ore mineral Magnetite Major mineral (>10%)

Ore mineral Pyrite Subordinate mineral (1-10%)

Ore mineral Pyrrhotite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Host rock Quartzite Sedimentary
Original rock :Exhalite

Metamorphic facies :Greenschist

Wall rock Greenstone Extrusive
Original rock :Basalt

Metamorphic facies :Greenschist

Information(s) in free text format

Description

Adkomst: Fra Gunnessætra er det ca. 3.5 km å gå langs sti (en del av veien) i lia på vestsiden av Levra. Skjerpeaktivitet har foregått på en flat forhøyning like nord for Levra. Her er det 5 små skjerp (tilsammen 5 m3 tipp) over en N-S-strekning (tvers av strøket?) på 35 m. Strøk/fall er ikke målbart, men det kan synes å være omlag øst-vest. I alle skjerp er det finkornig, mørk jaspis/chert med magnetitt-disseminasjon (prøve 01), og stedvis noe svovelkis (opptil 2-3 mm subhedrale korn)-disseminasjon. Innen magnetitt-cherten er det 2-3, ca. 1 m mektige, lag av rusten, lysere kvartsitt med finfordelt magnetkis-svovelkis-disseminasjon (prøve 02). Det opptrer også noen hvitkvartsitthorisonter uten mineralisering. En blotning inne i magnetitt-cherten viser grønnskifer. Det er blottet grønnstein nord og sør for mineraliseringen. Det kan også nevnes at en fattig, lignende mineralisering opptrer ca. 7 km mot nord, 2-300 m NØ for Ramseslykksætra. Her foretok Folldal Verk A/S geofysiske målinger i stikningsnett vinteren 1985, og det ble påvist flere cherthorisonter med jaspis, hematitt og magnetitt, og horisonter i mørk skifer med magnetitt-hematitt-disseminasjon (Bakke 1985).

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.

References not to be found in NGU's Reference Archive.:

Bakke, O. 1984: Oppdal prosjekt. Intern rapp. Folldal Verk A/S. BV 3019

Fieldsamples

Sample No. Sample type Miscellanrous

ST0363.01 Bedrock

Sampler: Wilberg/...Stored: Løkken

Comment: Kvartsitt med mt-diss.

No. of registrated element analyses = 1

ST0363.02 Bedrock

Sampler: Wilberg/...Stored: Løkken

Comment: Kvartsitt med po(-py)-diss.

No. of registrated element analyses = 1

NB! All analyse values are shown at the end of the printout.:

	From - To	Activity	Comments
	1997 - 1997	Sampling	Company/Institution :NGU-Malmreg.

	Genesis:	Volcex	Form:
	Main texture:	Structureless	Min. distribution:	Disseminated (<20 % ore minerals)

	Province:	Caledonides
	Geotec.unit:	Trondheim Nappe Complex
	Tectonic complex:	Støren Nappe
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Ore mineral	Magnetite	Major mineral (>10%)
Ore mineral	Pyrite	Subordinate mineral (1-10%)
Ore mineral	Pyrrhotite	Subordinate mineral (1-10%)

Relationship	Rock	Origin
Host rock	Quartzite	Sedimentary Original rock :Exhalite
		Metamorphic facies :Greenschist
Wall rock	Greenstone	Extrusive Original rock :Basalt
		Metamorphic facies :Greenschist