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	THE ORE DATABASE
	Occurence 4625 - 003 Arereirhaugen
	(Object Id: 4801) (Last updated: 05.03.2025)

Mineralization

	Era:	Paleozoic	Period:	Ordovician
	Genesis:	Orthomagmatic formation	Form:	Irregular
	Main texture:	Cataclastic	Min. distribution:	Massive (>50 % ore minerals)

Main grain size:

Fine grained (< 1 mm)

Main alteration:

	Strike/Dip:		Direction:
			Plunge:

Stratigraphic classification of host rock

Era:

Paleozoic

Period:

Ordovician

	Province:
	Geotec.unit:
	Tectonic complex:
	Igneous complex:	Sunnhordland Batholith

Group:

Formation:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Plagioclase	Subordinate mineral (1-10%)
	Gangue mineral	Hornblende	Subordinate mineral (1-10%)
	Ore mineral	Pyrrhotite	Major mineral (>10%)
	Ore mineral	Chalcopyrite	Subordinate mineral (1-10%)

Lithology:

	Relationship	Rock	Origin
	Host rock	Gabbro	Intrusive Original rock :Gabbro

Information(s) in free text format

Free text

Skjerpet ligger på nordsiden av Fugløy, ca. 10 m.o.h. og 30 m fra dette. Det ligger få m vest for en skjærsone som danner en liten dal. Skjærsonen er orientert N-S og faller ca. 50o mot V. Den inneholder en minst 3 m tykk granittåre. Mineraliseringen er ganske liten, dens form og orientering lyktes det ikke å studere, men den er ikke lagformig. I skjerpet ses en 0.5 m tykk pegmatittåre som skjærer mineraliseringen. I tippmaterialet ses blokker som består av pegmatitt og malm. Sulfidene forekommer enten som massive klumper eller som "veinlets" (15-20%) i den gabbroide vertsbergarten. 10 m sydvest for skjerpet ses en liten rustsone som har ca. 1% magnetkis. Mineraliseringen er antageligvis likvid-magmatisk.

Historic

Hos Foslie (1925) er denne navngitt som 301 Arereirhaugen skjerp førende magnetkis og kobber.

Bibliography:

From NGU's Reference Archive:

Foslie, Steinar , 1925

	Syd-Norges gruber og malmforekomster.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.126;1-89 + ka pages

Abstract:

On the map accompanying this paper all the mines and ore deposits of Southern Norway are collected for the first time.The material has been gathered from printed and unprinted sources, communications from mining engineers and geologists, and through personal visits. Included are all mines and ore deposits of former, present and future importance. Among the 1407 deposits on the map, there are furthermore included all of doubtful value and many which are quite unworkable, but of geological interest, or those which mark the distribution of ore bearing formations. For this reason it has been necessary to mark the deposits with signs of different size. The object is only to facilitate a comprehensive view of the map, and is not an effort of economic classification, which for most of them would be quite impossible. The sizes refer to the presumed importance of the ore deposit, and has nothing to do with the extent of the mining operations. Mines and deposits out of work during the period 1913-1923 have been separately marked (see the legend), also deposits which were formerly of much greater importance than now. For the smallest mines and deposits no distinction has been made in these respects. Among them are represented partly those, which are in reality unworkable, partly those which are little investigated.

Fieldsamples

	Sample No.	Sample type	Miscellanrous
	HO0112.01	Bedrock	Sampler: Wulff, P./...Stored: Løkken Comment: Massiv po med kornstørrelse 1 mm, noe forvitret. No. of registrated element analyses = 1
	HO0112.02	Bedrock	Sampler: Wulff, P./...Stored: Løkken Comment: Gabbroid bergart med 15-20 % po og litt (< 1 %) cpy i tynne årer. No. of registrated element analyses = 1
	HO0112.03	Bedrock	Sampler: Wulff, P./...Stored: Løkken Comment: Massiv po med 1 cm store, sterkt utvalsede plater. 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 4625 - 003 Arereirhaugen

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#
HO0112.01	Bedrock	1207	58	10	1856	2694	1.8	25.0
HO0112.02	Bedrock	1061	101	6	488	885	.7	10.0
HO0112.03	Bedrock	1882	54	-3	979	1628	1.0	5.0

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Sample No.	Pt#	Pd#	Rh#	As*	Cd*	Ba*	Mo*	Sb*	Bi*
HO0112.01	-3.0	14.0	-5.0	29	-.2	6	18.00	7	-2
HO0112.02	-3.0	-3.0	-5.0	6	-.2	8	9.00	2	-2
HO0112.03	-3.0	11.0	-5.0	22	-.2	9	15.00	8	2

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Sample No.	S%	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*
HO0112.01	25.95	14	157	93	39.21	-2.00	-5.00	5	2.0
HO0112.02	9.34	35	140	432	16.18	-2.00	-5.00	-2	8.0
HO0112.03	14.41	26	211	230	23.62	-2.00	-5.00	2	7.0

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Sample No.	La*	B*
HO0112.01	1.00	-3
HO0112.02	7.00	-3
HO0112.03	2.00	8

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The fact sheet was created on 13.07.2025

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

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