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THE ORE DATABASE
Occurence 4012 - 023 Dørdal
(Object Id: 5648)
(Last updated: 29.11.2001)

Location
County: Telemark Municipality: Bamble (4012)
Map 1:50000: Kragerø (1712-4) Map 1:250000: Arendal
Coordinate system: EU89-UTM Zone 32
East: 527230 m. North: 6536140 m.
Longitude: 9.4734670 Latitude: 58.9640020
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Sulphides
Element(s): Kis
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

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


Operations
From - To Activity Comments
2000 - 2000 Sampling Company/Institution :NGU

Mineralization
Era: Proterozoic Period: Mesoproterozoic
Genesis: Form: Lens
Main texture: Structureless Min. distribution: Disseminated (<20 % ore minerals)
Main grain size: Fine grained (< 1 mm) Main alteration: Sericitisation
Strike/Dip: 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 Feldspar Major mineral (>10%)
Gangue mineral Sericite Major mineral (>10%)
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Biotite Subordinate mineral (1-10%)
Ore mineral Pyrite Major mineral (>10%)

Lithology:
Relationship Rock Origin
Host rock Quartz-biotite schist| Sedimentary
Original rock :Greywacke
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Fold axis Dir./Plunge :106 / 0 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format
Free text
Et lite skjerpet ligger nær et jorde ved gården Dørdal på nordsida av E18. Det er utsprengt 1x2 m på vestsida av en mindre knaus. Vertsbergart er en kvarts-biotitt skifer med mange, få cm-tynne kvartsslirer. Skjerpet er anlagt i ombøyningen til en åpen, liggende fold med foldeakse 106°/0°. Svak sulfiddisseminasjon opptrer i en 20 cm bred sterkt rustfarga og noe serisittisert sone i skiferen (prøve .01). Pyritt er det viktigste sulfidmineralet. Mineraliseringen er ubetydelig og har ingen økonomisk interesse.

Fieldsamples
Sample No. Sample type Miscellanrous
TE0262.01 Dump
Sampler: J.S. Sandstad/...Stored: Løkken
Comment: Svak pyritt disseminasjon i grågrønn svært rustfarga bergart i kvarts-biotittskifer.
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:


Analyse Results
from
Deposit Area 4012 - 023 Dørdal

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#
TE0262.01 Dump 338 153 14 31 67 .2 16.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sb* Bi* S%
TE0262.01 1.0 7.0 6 .3 27 8.00 6 2 2.99
------------------
Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*
TE0262.01 67 42 130 8.42 10.00 4.00 4 5.0 15.00
------------------
Sample No. B*
TE0262.01 4


The fact sheet was created on 29.03.2024

Questions or comments regarding the fact sheet can be emailed to:
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