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THE ORE DATABASE
Occurence 4034 - 064 Mostøyl
(Object Id: 5492)
(Last updated: 28.03.2020)

Location
County: Telemark Municipality: Tokke (4034)
Map 1:50000: Bandak (1513-1) Map 1:250000: Skien
Coordinate system: EU89-UTM Zone 32
East: 461502 m. North: 6594893 m.
Longitude: 8.3202260 Latitude: 59.4907220
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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:


Operations
From - To Activity Comments
1870 - 1870 Pitting
2006 - 2006 Sampling Company/Institution :NGU

Mineralization
Era: Proterozoic Period: Neoproterozoic
Genesis: Hydrothermal vein Form: Lens
Main texture: Fracture filling Min. distribution: Irregular (scattered)
Main grain size: Fine grained (< 1 mm) Main alteration:
Strike/Dip: 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: Høydalsmo group Formation: Morgedal formation

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

Lithology:
Relationship Rock Origin
Wall rock Carbonaceous meta-arenitt Sedimentary
Original rock :Sandstone
Metamorphic facies :Amphibolite

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Wall rock Foliation Strike/Dip :26 / 54 Pre-mineralisation ;...Effect :None

Information(s) in free text format
Free text
Forekomsten er lett tilgjengelig øst for er stor parkeringsplass på nordsida av E134 ca. 800 m øst for Mostøyl-krysset. En liten vannfylt skråsynk ligger på vestsida av en liten kolle, rett under en høyspentmast. Sideveggen er 5x2 m lange, og synken skal være 12 m dyp. Den ble påvist ca. 1869 med forsøksdrift året etter (Dons 1963). Berggrunnen domineres av brunlig grå, karbonatførende meta-arenitt med foliasjon 26º/54º. Kvartsgangen er ikke synlig i skjerpet i dag, men på tippen finnes kobberglans+bornitt disseminasjon og strenger i karbonatførende kvarts. Forekomsten er ubetydelig.

Bibliography:
From NGU's Reference Archive:
Dons, Johannes A. , 1963
De prekambriske bergarter i Telemark, I. Gruber og skjerp innen gradeteigkart E36V Kviteseid.
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.216;1-80 pages
Abstract:
Approximately 115 mines and claims have been examined in the years 1941-1961 during regional geological mapping of the Kviteseid quadrangle. The map area covers a part of the "Thelemark-Sætersdal ore province" established by prof. J.H.L. Vogt in 1886. The oldest mine in the area, opened in the year 1524, was worked for silver bearing chalcopyrite and bornite. Other mines have been worked for gold, native copper and silver, molybdenite, galena, arsenopyrite, bismuthinite. All the mines have long since been abandoned and most of the surface workings are overgrown and difficult to find. The 15 native copper and silver deposits (which also contain vanadium minerals) form a separate group. They are all situated along the contact between a sandstone and an overlying basalt, the ore being confined to the sandstone. Most of the other deposits are of Quartz vein type. In quartzites which cover the greatest part of the map area, most of the quartz veins are barren. The great abundance of ore minerals in quartz veins in basic lavas and basic sills may be due to favourable pH conditions in these rocks. The galena deposits are found within a limited area close to a penetrating granite. The ore mineral paragenese in some of the deposits may have been formed under hypothermal to mesothermal conditions whereas other possibly originated at lower temperatures.

Fieldsamples
Sample No. Sample type Miscellanrous
TE0106.01 Dump
Sampler: J.S. Sandstad/...Stored: L¿kken/...Size(kg): 2
Comment: Weak chalcocite+bornite dissemination in carbonate-bearing quartz
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:


Analyse Results
from
Deposit Area 4034 - 064 Mostøyl

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#
TE0106.01 Dump 310 -100 -100 10 10 2.0 10.0
------------------
Sample No. As* Cd* Mo* Sb* Bi* Cr* Mn* Fe% W*
TE0106.01 -100 -10.0 10.00 -10 -100 -10 3600 3.24 10
------------------
Sample No. Sr* P* Ca*
TE0106.01 70.0 0 3


The fact sheet was created on 20.04.2024

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