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	THE ORE DATABASE
	Occurence 5540 - 030 Toppfjellet
	(Object Id: 1429) (Last updated: 21.02.2005)

Mineralization

	Era:	Paleozoic	Period:
	Genesis:	Shear zone formation	Form:	Layer
	Main texture:	Foliated	Min. distribution:	Disseminated (<20 % ore minerals)

Main grain size:

Medium grained (1-3 mm)

Main alteration:

Chloritisation

	Strike/Dip:	100 / 15	Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Paleozoic

Period:

	Province:	Caledonides
	Geotec.unit:	Reisa Nappe Complex
	Tectonic complex:	Vaddasdekket
	Igneous complex:

Group:

Formation:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Chlorite	Major mineral (>10%)
	Gangue mineral	Garnet	Major mineral (>10%)
	Gangue mineral	Biotite	Major mineral (>10%)
	Gangue mineral	Quartz	Subordinate mineral (1-10%)
	Gangue mineral	Amphibole	Subordinate mineral (1-10%)
	Ore mineral	Pyrrhotite	Major mineral (>10%)
	Ore mineral	Chalcopyrite	Major mineral (>10%)

Lithology:

	Relationship	Rock	Origin
	Host rock	Granatglimmerskifer	Sedimentary Original rock :Greywacke
			Metamorphic facies :Amphibolite

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :100 / 15	Post-mineralisation ;...Effect :None
	Host rock	Fold axis	Strike/Dip :310 / 5	Post-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Arbeide på forekomsten foregikk sannsynligvis på samme tid som de andre Skardalsforekomstene, rundt århundreskiftet. Mineraliseringen har utgående på østsiden av Skardalens utløp i Kåfjorden i høyde 240 moh. Ved UTM 485970 7711700 går en minst 20 m lang stoll (vannfylt innerst) mot S (100 m3 tipp) i klorittisert granat-amfibol-biotittskifer. Over 1-2 m mektighet er denne skjærpåvirket og rusten og impregnert med noe kobberkis og magnetkis, samt at det er små kvartslinser i skjærsonen. Sulfidimpregnasjonen er noe sterkere i et 10-20 cm mektig bånd som er sterkere skjærpåvirket og klorittisert. I den middelskornete granatklorittskiferen er det konkordante stringere, disseminasjon, sprekkefylling og diskordante årer med kobberkis (prøve 01 og 02). 30 m mot øst er det en gjengrodd skjæring mot sør som ender i en gjenrast stoll (100 m3 tipp). Tippen er overgrodd (fra en eldre driftsperiode?). Mineralisering ses ikke.

Bibliography:

From NGU's Reference Archive:

Vokes, Frank M. , 1957

	The copper deposits of the Birtavarre district, Troms, Northern Norway. Kopperforekomster i Birtavarre-området Troms.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.199;1-239 + p pages

Abstract:

The report gives the results of a 4-year (1952-55) programme for the investigation of a former copper-mining area in the north of Norway, carried out by the Geological Survey of Norway (NGU). The stratigraphy and structure of the district have been discribed in a previous NGU publication (Padget 1955). The ore deposits occur in one particular division (Ankerlia Series) of the layered Caledonian schists which underlie the whole area (see Plates 1 and 2). No deposits have been found outside this division. The greatest concentration of deposits occurs in the centre area along the south limb of a major, open E-W anticline (Moskogaissa anticline). In the same area the normally NW-plunging linear structures of the schists show a marked swing to an E-W direction (Plate 2). It is suggested that this area of "structural anomaly" has been responsible for the concentration of the sulphides. However, all kinds of control have been relatively weak and nowhere have the orebodies reached significant size by modern standards. It appears that the ore-bearing solutions spread out over large areas along zones of minor shearing within the Ankerlia Series. These zones lie roughly concordant with the schistosity and bedding for the schists and manifest themselves at outcrop as bands of marked rusting which are easy to follow in the field.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	TR0484.01	Bedrock	Sampler: Wilberg, R./...Stored: Løkken Comment: Middk. granat-klorittsk. med cpy-diss. No. of registrated element analyses = 1
	TR0484.02	Bedrock	Sampler: Wilberg, R./...Stored: Løkken Comment: Middk. granat-klorittsk. med cpy-diss. No. of registrated element analyses = 1
	TR0484.03	Bedrock	Sampler: Wilberg, R./...Stored: Løkken Comment: Fink. amf-bio-sk. fra ligg. 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 5540 - 030 Toppfjellet

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#
TR0484.01	Bedrock	1935	314	-3	25	68	.3	39.0
TR0484.02	Bedrock	5179	417	-3	41	96	.6	31.0
TR0484.03	Bedrock	84	78	-3	3	18	-.3	3.0

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Sample No.	Pt#	Pd#	Rh#	As*	Cd*	Ba*	Mo*	Sb*	Bi*
TR0484.01	-3.0	-3.0	-5.0	-2	.9	185	1.00	-2	4
TR0484.02	-3.0	-3.0	-5.0	-2	1.7	73	1.00	-2	7
TR0484.03	-3.0	-3.0	-5.0	-2	-.2	12	-1.00	2	-2

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Sample No.	S%	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*
TR0484.01	.45	65	79	226	4.89	11.00	-5.00	-2	4.0
TR0484.02	1.84	72	73	292	6.89	9.00	-5.00	-2	4.0
TR0484.03	.01	19	23	170	1.02	4.00	-5.00	-2	14.0

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Sample No.	La*	B*
TR0484.01	15.00	4
TR0484.02	6.00	3
TR0484.03	7.00	-3

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The fact sheet was created on 03.05.2024

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