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	Occurence 0 - 000 FEIL
	(Object Id: ) (Last updated: 09.03.1998)

Mineralization

	Genesis:	Sedex	Form:	Layer
	Main texture:	Durchbewegt	Min. distribution:	Disseminated (<20 % ore minerals)

Main grain size:

Fine grained (< 1 mm)

Main alteration:

	Strike/Dip:	25 / 45	Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Period:

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

Group:

Gula

Formation:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Graphite	Major mineral (>10%)
	Gangue mineral	Quartz	Major mineral (>10%)
	Ore mineral	Pyrrhotite	Major mineral (>10%)
	Ore mineral	Pyrargyrite	Accessory mineral (<1%)
	Ore mineral	Chalcopyrite	Accessory mineral (<1%)
	Ore mineral	Sphalerite	Accessory mineral (<1%)

Lithology:

	Relationship	Rock	Origin
	Host rock	Phyllite	Sedimentary Original rock :Mudstone
			Metamorphic facies :Greenschist
	Host rock	Black schist	Sedimentary Original rock :Bituminous silty mudstone
			Metamorphic facies :Greenschist

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :25 / 45	Post-mineralisation ;...Effect :None

Information(s) in free text format

Description

På Næringhøas SV- side er det rustsoner på to steder i forskjellige nivåer - de beskrives under samme forekomst. Det er ikke skjerpet på rustsonene, og pga. jernhatt og rustdannelser er det nærmest umulig å gjøre observasjoner og prøveta. Ved det SV-ligste punktet ("hovedskjerpet") er det 3 lange, meter-mektige rustsoner med få meter imellom. Det synes som sulfid-disseminasjonen sitter i en blanding av svartskifer og fyllitt med kvarts-feltspatiske lag. Ved "skjerp 1", ca. 400 m mot ØNØ, er det en tilsvarende rustsone med jernhatt.

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.

Name of Locality:

(Object Id: 10115 39,01,00)

Location

County:

Municipality:

Mangler ()

Map 1:50000:

Innset (1520-2)

Map 1:250000:

Røros

Coordinate system:

UTM-Zone 33 - EUREF89/WGS84

East:

549600 m.

North:

6940000 m.

Longitude:

9.9671850

Latitude:

62.5878200

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Resource

	Resource Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Resource Subtype:	Sulphides
			Element(s):	Kis

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The fact sheet was created on 06.05.2024

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