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THE ORE DATABASE
Occurence 4005 - 019 Dalskåta
(Object Id: 5762)
(Last updated: 28.03.2020)

Location
County: Telemark Municipality: Notodden (4005)
Map 1:50000: Gransherad (1614-2) Map 1:250000: Skien
Coordinate system: EU89-UTM Zone 32
East: 510862 m. North: 6605378 m.
Longitude: 9.1923600 Latitude: 59.5865020
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Copper
Element(s): Cu
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

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


Mineralization
Era: Proterozoic Period: Neoproterozoic
Genesis: Unknown Form: Lens
Main texture: Fracture filling Min. distribution: Disseminated (<20 % ore minerals)
Main grain size: Fine grained (< 1 mm) Main alteration: Biotitisation
Strike/Dip: 335 Direction:
Plunge:
Stratigraphic classification of host rock
Era: Proterozoic Period: Mesoproterozoic
Province: South Norwegian Basement Province
Geotec.unit: Telemark Supergroup
Tectonic complex:
Igneous complex:
Group: Heddal Group Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Biotite Major mineral (>10%)
Gangue mineral Quartz Major mineral (>10%)
Gangue mineral Feldspar Major mineral (>10%)
Ore mineral Bornite Major mineral (>10%)
Ore mineral Chalcocite Subordinate mineral (1-10%)

Lithology:
Relationship Rock Origin
Host rock Quartz-feldspar gneiss Sedimentary
Original rock :Sandstone
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Host rock Foliation Strike/Dip :345 / 35 Syn-mineralisation ;...Effect :Modifies

Information(s) in free text format
Free text
Skjerpet ligger i brattskråning tett ved oppkjøring til et nyere bolighus nordøst for Heddal kirke. Det skal være skjerpet før 1865. Det følger et naturlig trinn i terrenget og er omtrent 5 m langt med en opptil 2,5 m høy, naturlig skjæring. Det er anlagt langs en mørk, biotitt-rik sone i en fint båndet kvarts-feltspat rik gneis som trolig representerer et metasediment. Sona er 20-30 cm mektig og fører svak disseminasjon av kobberglans+bornitt?. Forekomsten er ubetydelig.

Fieldsamples
Sample No. Sample type Miscellanrous
TE0376.01 Bedrock
Sampler: J.S. Sandstad/...Stored: L¿kken/...Size(kg): 2
Comment: Weak chalcocite+bornite? disemination in felsic biotite gneiss
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:


Analyse Results
from
Deposit Area 4005 - 019 Dalskåta

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#
TE0376.01 Bedrock 9102 129 5 37 14 26.1 25.0
------------------
Sample No. Pt# Pd# As* Cd* Ba* Mo* Sb* Bi* V*
TE0376.01 6.0 7.0 2 -.5 238 -1.00 3 -3 103
------------------
Sample No. Cr* Mn* Fe% W* Sr* La* B* P* Ca*
TE0376.01 3 1291 7.17 -2 44.0 3.00 -3 0 1


The fact sheet was created on 19.04.2024

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