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:

Innset (1520-2)

Map 1:250000:

Røros

Coordinate system:

UTM-Zone 33 - EUREF89/WGS84

East:

552310 m.

North:

6943450 m.

Longitude:

10.0209960

Latitude:

62.6184050

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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: Layer

Main texture: Banded Min. distribution: Semi-massive (20-50 % ore minerals)

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

Strike/Dip: 10 / 40 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%)

Gangue mineral Amphibole Subordinate mineral (1-10%)

Gangue mineral Biotite Subordinate mineral (1-10%)

Gangue mineral Garnet Subordinate mineral (1-10%)

Ore mineral Magnetite Major mineral (>10%)

Ore mineral Pyrite Accessory mineral (<1%)

Lithology:

Relationship Rock Origin

Host rock Chert Sedimentary
Original rock :Exhalite

Metamorphic facies :Greenschist

Structures

Location: Type: Orientation(360 gr.): Relation to min.:

Host rock Foliation Strike/Dip :10 / 40 Post-mineralisation ;...Effect :None

Host rock Fold axis Dir./Plunge :30 / 5 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Description

Det er skjerpet ut litt (ca. 1 m3) i en liten hammer ved en bekk i en rusten cherthorisont. Den er disseminert med magnetitt og litt svovelkis over hele sin mektighet på 3 m. Magnetitt er anriket i et 30 cm mektig lag i chertens heng, hvor det opptrer cm-mektige (opptil 5 cm) bånd av finkornig, massiv magnetitt med spor av svovelkis, i veksling med biotittrike bånd med noe granat og magnetitt-disseminasjon. Under cherthorisonten er det klorittisk fyllitt og over båndet kvartsitt (småfoldet med akse 30/5). I heng skjæres mineraliseringen av en dm-tykk diskordant, foldet, finkornig trondhjemittgang. Pga. overdekning er mineraliseringens utstrekning ukjent.

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

ST0353.01 Dump

Sampler: Wilberg/...Stored: Løkken

Comment: Fink. semimassiv mt-min. i kvartsitt

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:	Layer
	Main texture:	Banded	Min. distribution:	Semi-massive (20-50 % ore minerals)

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

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Amphibole	Subordinate mineral (1-10%)
Gangue mineral	Biotite	Subordinate mineral (1-10%)
Gangue mineral	Garnet	Subordinate mineral (1-10%)
Ore mineral	Magnetite	Major mineral (>10%)
Ore mineral	Pyrite	Accessory mineral (<1%)

Relationship	Rock	Origin
Host rock	Chert	Sedimentary Original rock :Exhalite
		Metamorphic facies :Greenschist

Location:	Type:	Orientation(360 gr.):	Relation to min.:
Host rock	Foliation	Strike/Dip :10 / 40	Post-mineralisation ;...Effect :None
Host rock	Fold axis	Dir./Plunge :30 / 5	Post-mineralisation ;...Effect :Modifies