Fact Sheet for Deposit Area 624

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 624 - 067
	(Last updated 19.mar.2020)

Name of Deposit Area : Bakken

(Object Id : 0624,067,00,00)

Location

County :

Buskerud (06)

Municipality :

Øvre Eiker (0624)

Map 1:50000:

Kongsberg (1714-2)

Map 1:250000:

Skien

Marking point:

Longitude:

9.7444280

Latitude:

59.6953780

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

541903 m.

Y-coord:

6617721 m.

Commodity

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

Production

Activity:	Pitting	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:	10 m3

Importance

Public: Not Assessed (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 23.nov.2019 by Jan Sverre Sandstad)

Mineralization

Era: Paleozoic Period: Permian

Dating: Method:

Genesis: Hydrothermal breccia Form: Irregular

Main texture: Vein network Min. distribution: Irregular (scattered)

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

Strike/Dip: 15 / 90 Direction:

Plunge:

Stratigraphic classification of host rock

Era: Proterozoic Period: Mesoproterozoic

Province: South Norwegian Basement Province

Geotec.unit: Kongsberg Complex

Tectonic complex:

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Coal blende Subordinate mineral (1-10%)

Ore mineral Pyrite Major mineral (>10%)

Ore mineral Galena Major mineral (>10%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock Banded dioritic gneiss Intrusive
Original rock :Diorite

Metamorphic facies :Amphibolite

Structures

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

Host rock Foliation Strike/Dip :224 / 60

Information(s) in free text format

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Forekomsten ligger ca. 300 m sør for skogsbilveien langs et østvendt stup og består av en 6 m lang, 1-2 m bred og opptil 4 m høy skjæring. Denne følger en sone med årenettverk og minst 40 cm brede ganger av kvarts med orientering omkring 15°/90°. Subparallelle kvartsårer med hulromsfylling danner dels en breksjesone. Sulfidmineralene finnes både i breksjesonen og i kvartsganger. Foliasjonen til biotitt-amfibol gneissen er 224°/60°.

Fieldsamples

Sample No. Sample type Miscellanrous

BU0346.02 Dump

Sampler :J.S. Sandstad/...Stored :L›kken/...Size(kg) :2

Comment :Aggregater av sinkblende-kobberkis-blyglans-pyritt i kvartsbreksje

No. of registrated element analyses = 1

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

Name of Locality : Bakken D

(Object Id : 0624,067,01,00)

Location

County : Buskerud (06) Municipality : Øvre Eiker (0624)

Map 1:50000: Kongsberg (1714-2) Map 1:250000: Skien

Marking point: Longitude: 9.7470960 Latitude: 59.6963420

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-coord: 542051 m. Y-coord: 6617830 m.

Commodity

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

Element(s): Zn Pb Cu

Production

Activity: Pitting Reserves:

Prod. method: Production:

Prod. status: Volume of dump: 20 m3

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Coal blende Subordinate mineral (1-10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Galena Major mineral (>10%)

Ore mineral Pyrite Major mineral (>10%)

Ore mineral Sphalerite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Host rock Banded dioritic gneiss Intrusive
Original rock :Diorite

Metamorphic facies :Amphibolite

Structures

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

Host rock Foliation Strike/Dip :168 / 85 Pre-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Skjerpet består av en mindre skjæring med vegger på 5x1 m langs østsida av en mindre rygg. Det er trolig en synk som i hovedsak er gjenfylt, og en tipp med volum på 20 m3 er spredt utover i glissen furuskog. I sørveggen finnes en ca. 50 cm bred sone med flere parallelle kvartsganger med orientering 170°/85° tilnærmet parallelt foliasjonen i biotitt-amfibol gneis, 168°/85°. Hulromsfylling er vanlig i de 15-20 cm brede gangene. Sulfidmineralene er anrika mellom gangene og dels sammen med kullblende langs kanten av dem.

Fieldsamples

Sample No. Sample type Miscellanrous

BU0346.01 Dump

Sampler :J.S. Sandstad/...Stored :L›kken/...Size(kg) :2

Comment :Kobberkis-blyglans-pyritt aggregater og sinkblende b†nd lang randsona i kvarts

No. of registrated element analyses = 1

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

Name of Locality : Bakken B

(Object Id : 0624,067,02,00)

Location

County : Buskerud (06) Municipality : Øvre Eiker (0624)

Map 1:50000: Kongsberg (1714-2) Map 1:250000: Skien

Marking point: Longitude: 9.7436430 Latitude: 59.6944490

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-coord: 541859 m. Y-coord: 6617617 m.

Commodity

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

Element(s): Zn Pb Cu

Production

Activity: Pitting Reserves:

Prod. method: Production:

Prod. status: Volume of dump: 20 m3

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Coal blende Subordinate mineral (1-10%)

Ore mineral Galena Major mineral (>10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Sphalerite Major mineral (>10%)

Ore mineral Pyrite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock Banded dioritic gneiss Intrusive
Original rock :Diorite

Metamorphic facies :Amphibolite

Structures

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

Host rock Foliation Strike/Dip :18 / 85 Pre-mineralisation ;...Effect :None

Information(s) in free text format

Free text

Skjerpet ligger vel 100 m SSV for hovedforekomsten og består av en 2x3 m vannfylt synk. En ca. 1 m bred sone med kvartsganger med orientering 24°/85° er observert. Også her er det vanlig med hulromsfylling av kvarts i gangene og mørke kullblende-førende bånd med finkornet sinkblende mellom dem. Sulfidmineralene finnes også som aggregater og disseminasjon i kvartsbreksje.

Name of Locality : Bakken A

(Object Id : 0624,067,03,00)

Location

County : Buskerud (06) Municipality : Øvre Eiker (0624)

Map 1:50000: Kongsberg (1714-2) Map 1:250000: Skien

Marking point: Longitude: 9.7434570 Latitude: 59.6940730

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-coord: 541849 m. Y-coord: 6617576 m.

Commodity

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

Element(s): Zn Pb Cu

Production

Activity: Pitting Reserves:

Prod. method: Production:

Prod. status: Volume of dump: 3 m3

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Ore mineral Pyrite Major mineral (>10%)

Information(s) in free text format

Free text

Skjerpet ligger vel 40 m SSV i forlengelsen av mineraliseringene i Bakken B. Det består av en 1 m dyp vannfylt skjæring med sidevegger på 3x1 m. Nettverk av sulfidmineraliserte kvartsårer finnes; i hovedsak aggregater av pyritt.

Analyse Results

from

Deposit Area 624 - 067 Bakken

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#

BU0346.01 Dump 13600 2080 63700 2 6 100.0 25.0

BU0346.02 Dump 12300 112500 5580 42 8 68.4 24.0

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

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

BU0346.01 -5.0 -1.0 22 10.1 10 5.20 1 60 65

BU0346.02 -5.0 -1.0 82 517.0 20 0.71 1 2 33

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

Sample No. Se* Ga* Ge* In* S% V* Cr* Mn* Fe%

BU0346.01 67.90 1.26 0.20 2.24 2.95 25 3 71 2.76

BU0346.02 30.00 2.59 0.11 6.94 8.68 3 2 167 4.68

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

Sample No. Th* U* W* Rb* Sr* Y* Zr* Nb* Ta*

BU0346.01 -0.20 0.18 0 1.7 0.5 0.3 -1 0.11 -0.01

BU0346.02 -0.20 -0.05 0 1.6 0.3 0.2 -1 0.18 -0.01

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

Sample No. Cs* La* Ce* B* Li* Be* Na* Mg* Al*

BU0346.01 0.29 1.30 1.75 -10 1 -0 -0 0 0

BU0346.02 0.19 0.70 1.86 -10 3 -0 -0 0 0

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

Sample No. P* K * Ca* Sc* Ti* Te* Hf* Re* Hg*

BU0346.01 20 0 0 1.30 -0 4.65 -0.02 -0 0

BU0346.02 10 0 -0 2.10 -0 1.87 -0.02 -0 1

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

Sample No. Tl*

BU0346.01 0

BU0346.02 0

Era:	Paleozoic	Period:	Permian
Dating:		Method:
Genesis:	Hydrothermal breccia	Form:	Irregular
Main texture:	Vein network	Min. distribution:	Irregular (scattered)

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

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Coal blende	Subordinate mineral (1-10%)
Ore mineral	Pyrite	Major mineral (>10%)
Ore mineral	Galena	Major mineral (>10%)
Ore mineral	Sphalerite	Major mineral (>10%)
Ore mineral	Chalcopyrite	Major mineral (>10%)

Relationship	Rock	Origin
Host rock	Banded dioritic gneiss	Intrusive Original rock :Diorite
		Metamorphic facies :Amphibolite

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Host rock	Foliation	Strike/Dip :224 / 60

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
BU0346.01	Dump	13600	2080	63700	2	6	100.0	25.0
BU0346.02	Dump	12300	112500	5580	42	8	68.4	24.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
BU0346.01	-5.0	-1.0	22	10.1	10	5.20	1	60	65
BU0346.02	-5.0	-1.0	82	517.0	20	0.71	1	2	33

Sample No.	Se*	Ga*	Ge*	In*	S%	V*	Cr*	Mn*	Fe%
BU0346.01	67.90	1.26	0.20	2.24	2.95	25	3	71	2.76
BU0346.02	30.00	2.59	0.11	6.94	8.68	3	2	167	4.68

Sample No.	Th*	U*	W*	Rb*	Sr*	Y*	Zr*	Nb*	Ta*
BU0346.01	-0.20	0.18	0	1.7	0.5	0.3	-1	0.11	-0.01
BU0346.02	-0.20	-0.05	0	1.6	0.3	0.2	-1	0.18	-0.01

Sample No.	Cs*	La*	Ce*	B*	Li*	Be*	Na*	Mg*	Al*
BU0346.01	0.29	1.30	1.75	-10	1	-0	-0	0	0
BU0346.02	0.19	0.70	1.86	-10	3	-0	-0	0	0