Norsk versjon
	THE ORE DATABASE
	Occurence 5021 - 018 Kongsvoll
	(Object Id: 4309) (Last updated: 01.07.1998)

Operations

	From - To	Activity	Comments
	1985 - 1985	Geophysics	Company/Institution :Folldal Verk A/S
	1997 - 1997	Sampling	Company/Institution :NGU-Malmreg.

Mineralization

	Genesis:	Volcex	Form:
	Main texture:	Banded	Min. distribution:	Massive (>50 % ore minerals)

Main grain size:

Fine grained (< 1 mm)

Main alteration:

Chloritisation

	Strike/Dip:	130 / 30	Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Period:

	Province:	Caledonides
	Geotec.unit:	Blåhø-Surna Nappe Complex
	Tectonic complex:	Blåhø Nappe
	Igneous complex:

Group:

Blåhø

Formation:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Quartz	Major mineral (>10%)
	Gangue mineral	Amphibole	Major mineral (>10%)
	Gangue mineral	Biotite	Major mineral (>10%)
	Ore mineral	Pyrrhotite	Major mineral (>10%)
	Ore mineral	Pyrite	Accessory mineral (<1%)
	Ore mineral	Chalcopyrite	Accessory mineral (<1%)

Lithology:

	Relationship	Rock	Origin
	Wall rock	Amphibolite	Extrusive Original rock :Basalt
			Metamorphic facies :Amphibolite

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :130 / 30	Post-mineralisation ;...Effect :None

Information(s) in free text format

Description

Mineraliseringen har utgående 25 m nord for et høydepunkt (1013 m.o.h.), og er undersøkt med et lite skjerp (5 m3 tipp). Det er ikke kjent når skjerping har foregått. I 1985 utførte Folldal Verk A/S elektromagnetiske (Turam) målinger over mineraliseringen. I tildels klorittisert, fin- til middelskornig og karbonatholdig amfibolskifer er det i skjerpet en 2.5 m mektig rustsone, bestående av grov- til middelskornig, lite foliert amfibolitt med magnetkis-disseminasjon og spor av svovelkis og kobberkis. Svovelkis og kobberkis opptrer overveiende langs kontaktene til få-cm-mektige kvartslinser. I rustsonen er det også et par dm-mektige lag av klorittisert amfibolskifer. I bunnen av rustsonen er det 20 cm massiv, finkornig magnetkis-mineralisering. Mineraliseringen kan pga. overdekning ikke følges i strøkretningen.

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.:

Elvebakk, H. & Lile, O.B. 1986: Elektromagnetiske målinger, Turam, Kongsvoll og Heimtjønnhø 1985. BV 4462.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	ST0106.01	Bedrock	Sampler: Wilberg/...Stored: Løkken Comment: Fink. massiv py-min. No. of registrated element analyses = 1

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

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Analyse Results

from

Deposit Area 5021 - 018 Kongsvoll

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#
ST0106.01	Bedrock	476	102	12	7	145	.9	6.0

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Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
ST0106.01	5.0	6.0	7	1.9	18	10.00	-3	5	24.50

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Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
ST0106.01	77	18	1211	44.07	8.00	-8.00	-2	37.0	7.00

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Sample No.	B*
ST0106.01	12

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The fact sheet was created on 03.05.2024

Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no

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