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THE ORE DATABASE
Occurence 3314 - 040 Hestedalsetra
(Object Id: 6011)
(Last updated: 19.03.2020)
Location
County: Buskerud Municipality: Øvre Eiker (3314)
Map 1:50000: Kongsberg (1714-2) Map 1:250000: Skien
Coordinate system: EU89-UTM Zone 32
East: 540726 m. North: 6620057 m.
Longitude: 9.7239900 Latitude: 59.7164700
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Lead
Element(s): Pb Zn Ag Cu
Importance
Raw material meaning: Not Assessed (reg. 18.02.2015)

Resources and production
Activity: Pitting Reserves:
Operating method: Historical production:


Mineralization
Era: Paleozoic Period: Permian
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: 0 / 70 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 Sphalerite Major mineral (>10%)
Ore mineral Arsenopyrite Major mineral (>10%)
Ore mineral Chalcopyrite Subordinate mineral (1-10%)
Ore mineral Cobaltite Subordinate mineral (1-10%)
Ore mineral Galena Subordinate mineral (1-10%)

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

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Foliation Strike/Dip :4 / 90 Pre-mineralisation ;...Effect :None

Information(s) in free text format
Free text
Forekomsten ligger vel 100 m nord for ei hytte i bunnen av en skråning med glissen furuskog. Den består av en dagskjæring, 3x2 m med et par mindre groper nord for denne. Sulfidmineraliseringene har likhetstrekk med de som finnes i Aspesæter-skjerpene, men er i tillegg rik på arsenkis. Sinkblende og arsenkis, og mindre mengder blyglans, kobberkis og pyritt opptrer i kvarts med hulromsfyllinger og båndet kvarts omgitt av kvartsbreksje. Sinkblende ser ut til å dominere og danner aggregater og bånd i urein kvarts, mens blyglans gjerne er anrika rundt kvartslinser. En minst 30 cm bred kvartsgang er blottet i dagskjæringa og har retning 0°/70°. Vertsbergarten er båndet biotitt-hornblende gneis med foliasjon 4°/90°.

Fieldsamples
Sample No. Sample type Miscellanrous
BU0204.01 Dump
Sampler: J.S. Sandstad/...Stored: L›kken/...Size(kg): 2
Comment: Rik sinkblende-arsenkis+blyglans+kobberkis+pyritt aggregater/b†nd 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 3314 - 040 Hestedalsetra

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#
BU0204.01 Dump 910 68800 7500 542 31 16.5 798.0
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Sample No. Pt# Pd# As* Cd* Ba* Mo* Sn* Sb* Bi*
BU0204.01 -5.0 1.0 10000 209.0 10 0.58 1 72 6
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Sample No. Se* Ga* Ge* In* S% V* Cr* Mn* Fe%
BU0204.01 13.00 1.93 0.06 3.18 7.34 7 3 809 4.95
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Sample No. Th* U* W* Rb* Sr* Y* Zr* Nb* Ta*
BU0204.01 -0.20 0.06 0 5.1 13.1 3.1 1 0.08 -0.01
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Sample No. Cs* La* Ce* B* Li* Be* Na* Mg* Al*
BU0204.01 0.67 1.00 2.42 -10 5 -0 -0 0 0
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Sample No. P* K * Ca* Sc* Ti* Te* Hf* Re* Hg*
BU0204.01 50 0 1 2.40 -0 0.47 0.04 -0 0
------------------
Sample No. Tl*
BU0204.01 0

The fact sheet was created on 26.04.2024
Questions or comments regarding the fact sheet can be emailed to:
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