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THE ORE DATABASE
Deposit Area 624 - 044
(Last updated 19.mar.2020)

Name of Deposit Area : Darbu
(Object Id : 0624,044,00,00)
Location
County : Buskerud (06) Municipality : Øvre Eiker (0624)
Map 1:50000: Kongsberg (1714-2) Map 1:250000: Skien
Marking point: Longitude: 9.7509260 Latitude: 59.7070870
EU89-UTM Zone 32 (Coordinates IS confirmed)
X-coord: 542254 m. Y-coord: 6619029 m.
Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Lead
Element(s): Pb Zn Ag
Production
Activity: Pitting Reserves:
Prod. method: Production:
Prod. status: Volume of dump: 8 m3

Importance
Public: Not Assessed (reg. 18.02.2015)
Economical: Not classified/evaluated

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: 350 / 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%)
Ore mineral Galena Major mineral (>10%)
Ore mineral Sphalerite Major mineral (>10%)
Ore mineral Pyrite Major mineral (>10%)
Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Lithology:
Relationship Rock Origin
Host rock Dioritic gneiss Intrusive
Original rock :Diorite
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Foliation Strike/Dip :0 / 65 Pre-mineralisation ;...Effect :None

Information(s) in free text format
Free text
Hovedforekomsten består av en liten skjæring som er dels fylt med skrot og ligger i en østvendt skråning ca. 20 m vest for skogsbilveien opp mot Aspesæter. Videre ca. 150 m lengre øst opp i skråningen finnes en synk som også er kalt Jøstanrud. I nordveggen i hovedforekomsten er det blottet 2-10 cm brede kvartsårer/-linser i mørk, finkornet sidestein med svak disseminasjon av pyritt. Orienteringen til foliasjonen i hornblendeførende diorittisk gneis like ved er 358°/85°. I tippen som er spredt jevnt utover finnes noen blokker med aggregater av sinkblende, blyglans og pyritt i noe urein kvarts.

Fieldsamples
Sample No. Sample type Miscellanrous
BU0208.01 Dump
Sampler :J.S. Sandstad/...Stored :L›kken/...Size(kg) :2
Comment :Disseminasjon/aggregater av sinkblende-blyglans-pyritt+kobberkis i kvarts
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Name of Locality : Jøstanrud
(Object Id : 0624,044,01,00)
Location
County : Buskerud (06) Municipality : Øvre Eiker (0624)
Map 1:50000: Kongsberg (1714-2) Map 1:250000: Skien
Marking point: Longitude: 9.7482440 Latitude: 59.7071840
EU89-UTM Zone 32 (Coordinates IS confirmed)
X-coord: 542102 m. Y-coord: 6619039 m.
Commodity
Main Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Sub Type: Lead
Element(s): Pb Zn Ag
Production
Activity: Pitting Reserves:
Prod. method: Production:
Prod. status: Volume of dump: 6 m3


Mineralogy
Relationship Mineral Amount
Gangue mineral Quartz Major mineral (>10%)
Ore mineral Pyrite Major mineral (>10%)
Ore mineral Galena Subordinate mineral (1-10%)

Lithology:
Relationship Rock Origin
Host rock Dioritic gneiss Intrusive
Original rock :Diorite
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Foliation Strike/Dip :358 / 85 Pre-mineralisation ;...Effect :None

Information(s) in free text format
Free text
Forekomsten består av en N-S orientert, vannfylt synk med sidevegger på 3x1,5 m. Det er dårlig blottet omkring skjerpet , men en omkring 30 cm bred, rustfarget kvartsgang med hulrom etter pyritt? står igjen i sørveggen. Gangens orientering er tilnærmet 10°/85°. Kvartsårebreksje kan anes i nordveggen. Pyritt ser ut til å være dominerende sulfid, men også en større blokk med svak disseminasjon av blyglans i tillegg til pyritt ble påvist.

Fieldsamples
Sample No. Sample type Miscellanrous
BU0208.02 Dump
Sampler :J.S. Sandstad/...Stored :L›kken/...Size(kg) :2
Comment :Svak disseminsjon av blyglans+kobberkis-pyritt i m›rk gr† kvarts
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:

Analyse Results
from
Deposit Area 624 - 044 Darbu

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#
BU0208.01 Dump 423 37900 3740 14 2 6.9 21.0
BU0208.02 Dump 138 440 1185 3 4 4.2 24.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sn* Sb* Bi*
BU0208.01 -5.0 -1.0 114 217.0 30 0.75 0 3 1
BU0208.02 -5.0 -1.0 69 1.7 50 2.00 0 1 6
------------------
Sample No. Se* Ga* Ge* In* S% V* Cr* Mn* Fe%
BU0208.01 6.50 1.03 -0.05 0.93 3.72 2 2 104 2.54
BU0208.02 2.60 3.21 -0.05 0.17 .64 12 4 183 2.43
------------------
Sample No. Th* U* W* Rb* Sr* Y* Zr* Nb* Ta*
BU0208.01 -0.20 -0.05 0 2.6 0.5 0.5 -1 0.15 -0.01
BU0208.02 0.20 0.71 0 5.9 2.8 1.3 2 -0.05 -0.01
------------------
Sample No. Cs* La* Ce* B* Li* Be* Na* Mg* Al*
BU0208.01 0.14 6.20 13.95 -10 1 -0 -0 0 0
BU0208.02 0.73 8.30 17.90 -10 9 0 0 0 1
------------------
Sample No. P* K * Ca* Sc* Ti* Te* Hf* Re* Hg*
BU0208.01 10 0 0 0.30 -0 0.19 -0.02 -0 0
BU0208.02 250 0 0 1.50 -0 0.16 0.06 0 0
------------------
Sample No. Tl*
BU0208.01 0
BU0208.02 0

The fact sheet was created on 18.05.2024
Questions or comments regarding the fact sheet can be emailed to:
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