Fact Sheet for Deposit Area 919

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 919 - 012
	(Last updated 15.mar.2024)

Name of Deposit Area : Bøylestad

(Object Id : 0919,012,00,00)

Drill Cores from the Deposit Area: See Borehole Area Bøylestad

Location

County :

Aust-Agder (09)

Municipality :

Froland (0919)

Map 1:50000:

Nelaug (1612-3)

Map 1:250000:

Arendal

Marking point:

Longitude:

8.7065090

Latitude:

58.5729620

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

482929 m.

Y-coord:

6492539 m.

Commodity

	Main Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Sub Type:	Copper
			Element(s):	Cu Zn Kis Co

Production

Activity:	Mining	Reserves:
Prod. method:	Open pit and underground mining	Production:	6 thousand tons
Prod. status:	Disused, closed	Volume of dump:	1200 m3

Importance

Public: Not Assessed (reg. 20.03.2017)

Economical: Could be significant , (Confirmed 23.feb.2001 by Jan Sverre Sandstad)

Products

Element/product Crude ore grade or quality

CU 0.9 %

ZN 1.7 %

Operations

From - To Activity Comments

1866 - 1882 Regular production Company/Institution :Bøilestad kobberverk

I følge produksjonsstatistikk (Ba 3681). Andre kilder angir drift i 70 år.

1983 - 1983 Geology Company/Institution :ARCO Norway, Inc.

2000 - 2000 Sampling Company/Institution :NGU

Mineralization

Era: Proterozoic Period: Mesoproterozoic

Dating: Method:

Genesis: Volcex Form: Plate

Main texture: Structureless Min. distribution: Massive (>50 % ore minerals)

Main grain size: Medium grained (1-3 mm) Main alteration: Silicification

Strike/Dip: 28 / 70 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Proterozoic Period: Mesoproterozoic

Province: South Norwegian Basement Province

Geotec.unit: Bamble Complex

Tectonic complex:

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Feldspar Major mineral (>10%)

Gangue mineral Calcite Subordinate mineral (1-10%)

Gangue mineral Chlorite Subordinate mineral (1-10%)

Gangue mineral Garnet Accessory mineral (<1%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Pyrite Subordinate mineral (1-10%)

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 :15 / 65 Post-mineralisation ;...Effect :Modifies

Wall rock Schistosity Strike/Dip :16 / 60 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Mining in the Bøylestad area consists of several minor pits and, and the 1-3 m thick ore has been exploited to a depth of 120 m. At least 6000 tonnes has been mined over a period of 70 years in the 19th century. The massive ore is located within altered amphibolite and comprises massive pyrrhotite and sphalerite and veinlets of chalcopyrite and pyrrhotite.

Photo(s) from the Deposit area:

Photo no. 1 showing Dobbelsynken i Bøylestad"

Bibliography:

From NGU's Reference Archive:

Bech, Lone , 1984

Detailed geological mapping of the Skyttemyr-Bøylestad ore and ist host-rock package, Bamble section, 1983.

;ARCO Norway;RAPPORT;Report; No.84-230-20;22 s. + v pages

Abstract:

The formerly mined Skyttemyr-Bøylestad ore is situated in the Froland district of the Bamble belt, Norway. The ore is a 2.5 km long horizon with Au-bearing, massive pyrrhotite-chalcopyrite-bodies, centrally located in the at least 15 km long north-east-striking Skyttemyr sulfide zone. This zone marks the border between a thick "normal" volcanic-sedimentary package to the east. Alternating biotite-quartz gneiss, garnet amphibolite, sillimmanite gneiss, quartzites, calc-silicates, carbonates, albitites and sulfide-bearing or rusty units constitute the last mentioned. The Skyttemyr sone is the most Au and sulfide-rich zone in the Al-rich package. East of this only traces of sulfide are found. Highest Au-values (max. = 2.94 ppm) are clearly confined to the central-most Cu-rich massive ore at Skyttemyr, and the Au-content decreases to trace values 1 km north and south of this location. Zn seems partly to show a reverse behaviour. [...]

Froland copper property, Norway.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 4156;5 pages

Abstract:

Forekomsten omfatter Skytmyr, Boilestad og Sletne gruver sammen med flere skjerp. Malmsonen er omgitt av gneiser og kan følges opptil 3,2 km. Mineraliseringen er svovel og magnetkis med noe kobber. Det blir gitt en beskrivelse av gruvene og skjerpene mellom dem, hvor det tilslutt er behandlet gruvenes økonomi.

, 1885 (?)

Bøilestad, Skytmyr.

;Norges geologiske undersøkelse;TEKNISK RAPPORT;Bergarkivet; No.BA 3681;5 pages

Abstract:

Oversikt / tall for drift 1866-1885. Rapporten som er håndskrevet, gir gruvetekniske opplysninger.

Fieldsamples

Sample No. Sample type Miscellanrous

AA0159.04 Dump

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Massiv magnetkis-sinkblende+kobberkis malm (tipp ved hovedgruva).

No. of registrated element analyses = 1

AA0159.05 Dump

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Kobberkis-magnetkis årer/strenger i kvarts-feltspat-amfibol/kloritt bergart, rik Cu-min fra tipp ved hovedgruva.

No. of registrated element analyses = 1

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

Name of Locality : Midtre Bøylestad

(Object Id : 0919,012,01,00)

Location

County : Aust-Agder (09) Municipality : Froland (0919)

Map 1:50000: Nelaug (1612-3) Map 1:250000: Arendal

Marking point: Longitude: 8.7061650 Latitude: 58.5729610

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-coord: 482909 m. Y-coord: 6492539 m.

Commodity

Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper

Element(s): Cu Zn Kis

Production

Activity: Mining Reserves:

Prod. method: Open pit and underground mining Production:

Prod. status: Disused, closed Volume of dump: 20 m3

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Feldspar Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Biotite Subordinate mineral (1-10%)

Gangue mineral Sillimanite Accessory mineral (<1%)

Gangue mineral Garnet Accessory mineral (<1%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Pyrite Subordinate mineral (1-10%)

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 :6 / 55 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Det midtre dagbruddet har retning 12º og ligger 80 m sør for dobbelsjaktene i hovedbruddet. Det er et 35 m langt, opptil 6 m dypt og 1,5-2 m bredt dagbrudd med en vannfylt sjakt midt i og en mindre stoll i sørenden. En liten skråsjakt fører ned til denne stollen fra sørvest. Massiv malm er ikke blottet i bruddet, kun svak disseminasjon av magnetkis og dels kobberkis opptrer i veggene som består av dels silisifisert og biotittisert amfibolitt med foliasjon 6º/55º. Sidebergartene er dermed de samme som i hovedbruddet. Enkelte kvarts- og pegmatittslirer finnes også. Ved skråsjakta finnes en 40 cm bred sone med kraftig disseminasjon og mange årer/strenger av sulfider; i hovedsak magnetkis og kobberkis (prøve .02). Bergartene svinger der mer sørvest og malmsona har retning 50º/80º. Videre sørover stryker bergartene mer nord-sør igjen. Semi-massiv magnetkis+sinblende breksjetype malm med kvartsøyne og bergartsfragmenter er tatt fra mineraliserte blokker i nordenden av bruddet (.03).

Photo(s) from the Deposit area:

Photo no. 1 showing Midtre Bøylestad dagskjæring"

Fieldsamples

Sample No. Sample type Miscellanrous

AA0159.02 Bedrock

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Kobberkis+pyritt/magnetkis årer/strenger i felsisk bergart med noe biotitt og granat (fast fjell sørlige skjæring).

No. of registrated element analyses = 1

AA0159.03 Dump

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Semi-massiv magnetkis-sinkblende+kobberkis, med mange grønne bergartsfragmenter og få kvartsøyne.

No. of registrated element analyses = 1

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

Name of Locality : Søndre Bøylestad

(Object Id : 0919,012,02,00)

Location

County : Aust-Agder (09) Municipality : Froland (0919)

Map 1:50000: Nelaug (1612-3) Map 1:250000: Arendal

Marking point: Longitude: 8.7058310 Latitude: 58.5717930

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-coord: 482889 m. Y-coord: 6492409 m.

Commodity

Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper

Element(s): Cu Zn Kis

Production

Activity: Pitting Reserves:

Prod. method: Production:

Prod. status: Volume of dump:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Feldspar Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Biotite Subordinate mineral (1-10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Pyrite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Wall rock Biotite gneis Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Structures

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

Wall rock Foliation Strike/Dip :14 / 45 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Det sørligste bruddet har retning 8º og ligger lengst sør i hogstfeltet. Det er 12 m langt, 2-3 m bredt og opptil 3 m dypt, og er dels gjenrast og gjengrodd. Kraftig forvitra og skifrig biotittgneis i heng har foliasjon 14º/45º. En tipphaug sørøst for åpningen inneholder de samme bergartene og mineraliseringstypene som ved bruddene i nord. I tillegg finnes magnetkis-kobberkis aggregater/strenger i grovkornet, kvarts-feltspat pegmatitt (prøve .01).

Fieldsamples

Sample No. Sample type Miscellanrous

AA0159.01 Dump

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Magnetkis-kobberkis strenger/aggregater i pegmatittisk kvarts-feltspat gang.

No. of registrated element analyses = 1

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

Name of Locality : Sletne sør

(Object Id : 0919,012,03,00)

Location

County : Aust-Agder (09) Municipality : Froland (0919)

Map 1:50000: Nelaug (1612-3) Map 1:250000: Arendal

Marking point: Longitude: 8.7026130 Latitude: 58.5660380

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-coord: 482699 m. Y-coord: 6491770 m.

Commodity

Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper

Element(s): Cu Zn Kis

Production

Activity: Test mining Reserves:

Prod. method: Underground mining Production:

Prod. status: Disused, closed Volume of dump: 120 m3

Photo(s) from the Deposit area:

Photo no. 1 showing Synken i Sletne sør"

Fieldsamples

Sample No. Sample type Miscellanrous

AA0159.07 Dump

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Semi-massiv magnetkis-sinkblende med litt kobberkis i kvarts-amfibol-kloritt rik grunnmasse.

No. of registrated element analyses = 1

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

Name of Locality : Sletne nord

(Object Id : 0919,012,04,00)

Location

County : Aust-Agder (09) Municipality : Froland (0919)

Map 1:50000: Nelaug (1612-3) Map 1:250000: Arendal

Marking point: Longitude: 8.7032950 Latitude: 58.5667580

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-coord: 482740 m. Y-coord: 6491850 m.

Commodity

Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Copper

Element(s): Cu Zn Kis

Production

Activity: Pitting Reserves:

Prod. method: Production:

Prod. status: Volume of dump: 60 m3

Mineralogy

Relationship Mineral Amount

Gangue mineral Feldspar Major mineral (>10%)

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Pyrite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Wall rock Altered amphibolite Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Structures

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

Wall rock Foliation Strike/Dip :14 / 55 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Dette er en 9 m lang, 1-2 m bred og opptil 2 m høy vannfylt, dagskjæring med retning 16º. Den er omgitt av en ringmur og i tillegg finnes en tipp på 60 m³. Kvartsrik glimmergneis med foliasjon 14º/55º er blottet i heng, mens svakt sulfiddisseminert amfibolitt finnes i ligg. Malmsona er ikke blottet. I ringmuren og på tipp finnes massiv magnetkis-sinkblende med spor av kobberkis, mens strenger/aggregater med kobberkis-magnetkis i tilknytning til kvartslinser i amfibolitten er mest vanlig (prøve .06).

Fieldsamples

Sample No. Sample type Miscellanrous

AA0159.06 Dump

Sampler :J.S. Sandstad/...Stored :Løkken

Comment :Kobberkis og magnetkis strenger/aggregater i grovkornet kvarts.

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 919 - 012 Bøylestad

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#

AA0159.01 Dump 13443 4579 26 258 236 8.5 286.0

AA0159.02 Bedrock 11438 1412 81 39 30 5.8 70.0

AA0159.03 Dump 7142 17403 72 343 243 2.7 49.0

AA0159.04 Dump 952 43923 32 326 416 1.3 21.0

AA0159.05 Dump 22210 5253 465 90 114 25.1 1986.0

AA0159.06 Dump 2914 160 19 119 292 1.8 1.0

AA0159.07 Dump 2386 45578 413 242 496 2.3 11.0

------------------

Sample No. Pt# Pd# As* Cd* Ba* Mo* Sb* Bi* S%

AA0159.01 4.0 14.0 346 25.8 13 7.00 2 35 16.10

AA0159.02 1.0 4.0 49 5.0 135 4.00 5 17 2.25

AA0159.03 7.0 2.0 699 56.8 81 2.00 2 13 17.70

AA0159.04 1.0 1.0 27 147.1 24 2.00 2 2 26.30

AA0159.05 4.0 10.0 107 17.8 27 3.00 2 38 7.54

AA0159.06 1.0 2.0 742 .9 2 4.00 2 4 8.19

AA0159.07 1.0 15.0 169 307.9 9 4.00 2 5 14.50

------------------

Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*

AA0159.01 13 34 249 23.01 1.00 10.00 1 8.0 1.00

AA0159.02 181 168 616 7.47 4.00 9.00 1 12.0 9.00

AA0159.03 100 132 408 28.86 1.00 4.00 1 9.0 5.00

AA0159.04 9 24 158 35.38 1.00 4.00 1 9.0 2.00

AA0159.05 81 180 420 12.09 1.00 13.00 1 15.0 2.00

AA0159.06 12 40 106 14.01 1.00 4.00 12 1.0 1.00

AA0159.07 91 198 895 31.58 1.00 4.00 1 1.0 6.00

------------------

Sample No. B*

AA0159.01 2

AA0159.02 4

AA0159.03 2

AA0159.04 2

AA0159.05 2

AA0159.06 2

AA0159.07 4

	Element/product	Crude ore grade or quality
	CU	0.9 %
	ZN	1.7 %

From - To	Activity	Comments
1866 - 1882	Regular production	Company/Institution :Bøilestad kobberverk
		I følge produksjonsstatistikk (Ba 3681). Andre kilder angir drift i 70 år.
1983 - 1983	Geology	Company/Institution :ARCO Norway, Inc.
2000 - 2000	Sampling	Company/Institution :NGU

Era:	Proterozoic	Period:	Mesoproterozoic
Dating:		Method:
Genesis:	Volcex	Form:	Plate
Main texture:	Structureless	Min. distribution:	Massive (>50 % ore minerals)

	Province:	South Norwegian Basement Province
	Geotec.unit:	Bamble Complex
	Tectonic complex:
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Amphibole	Major mineral (>10%)
Gangue mineral	Feldspar	Major mineral (>10%)
Gangue mineral	Calcite	Subordinate mineral (1-10%)
Gangue mineral	Chlorite	Subordinate mineral (1-10%)
Gangue mineral	Garnet	Accessory mineral (<1%)
Ore mineral	Sphalerite	Major mineral (>10%)
Ore mineral	Chalcopyrite	Major mineral (>10%)
Ore mineral	Pyrrhotite	Major mineral (>10%)
Ore mineral	Pyrite	Subordinate mineral (1-10%)

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

Location:	Type:	Orientation(360 gr.):	Relation to min.:
Wall rock	Foliation	Strike/Dip :15 / 65	Post-mineralisation ;...Effect :Modifies
Wall rock	Schistosity	Strike/Dip :16 / 60	Post-mineralisation ;...Effect :Modifies

	Abstract:
	Forekomsten omfatter Skytmyr, Boilestad og Sletne gruver sammen med flere skjerp. Malmsonen er omgitt av gneiser og kan følges opptil 3,2 km. Mineraliseringen er svovel og magnetkis med noe kobber. Det blir gitt en beskrivelse av gruvene og skjerpene mellom dem, hvor det tilslutt er behandlet gruvenes økonomi.

	Abstract:
	Oversikt / tall for drift 1866-1885. Rapporten som er håndskrevet, gir gruvetekniske opplysninger.

Activity:	Pitting	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:

Activity:	Test mining	Reserves:
Prod. method:	Underground mining	Production:
Prod. status:	Disused, closed	Volume of dump:	120 m3

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
AA0159.01	Dump	13443	4579	26	258	236	8.5	286.0
AA0159.02	Bedrock	11438	1412	81	39	30	5.8	70.0
AA0159.03	Dump	7142	17403	72	343	243	2.7	49.0
AA0159.04	Dump	952	43923	32	326	416	1.3	21.0
AA0159.05	Dump	22210	5253	465	90	114	25.1	1986.0
AA0159.06	Dump	2914	160	19	119	292	1.8	1.0
AA0159.07	Dump	2386	45578	413	242	496	2.3	11.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
AA0159.01	4.0	14.0	346	25.8	13	7.00	2	35	16.10
AA0159.02	1.0	4.0	49	5.0	135	4.00	5	17	2.25
AA0159.03	7.0	2.0	699	56.8	81	2.00	2	13	17.70
AA0159.04	1.0	1.0	27	147.1	24	2.00	2	2	26.30
AA0159.05	4.0	10.0	107	17.8	27	3.00	2	38	7.54
AA0159.06	1.0	2.0	742	.9	2	4.00	2	4	8.19
AA0159.07	1.0	15.0	169	307.9	9	4.00	2	5	14.50

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
AA0159.01	13	34	249	23.01	1.00	10.00	1	8.0	1.00
AA0159.02	181	168	616	7.47	4.00	9.00	1	12.0	9.00
AA0159.03	100	132	408	28.86	1.00	4.00	1	9.0	5.00
AA0159.04	9	24	158	35.38	1.00	4.00	1	9.0	2.00
AA0159.05	81	180	420	12.09	1.00	13.00	1	15.0	2.00
AA0159.06	12	40	106	14.01	1.00	4.00	12	1.0	1.00
AA0159.07	91	198	895	31.58	1.00	4.00	1	1.0	6.00