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THE ORE DATABASE
Occurence 3824 - 019 Byrtevatn-I
(Object Id: 5513)
(Last updated: 28.03.2020)

Location
County: Vestfold og Telemark Municipality: Tokke (3824)
Map 1:50000: Dalen (1513-4) Map 1:250000: Sauda
Coordinate system: EU89-UTM Zone 32
East: 434570 m. North: 6595035 m.
Longitude: 7.8446930 Latitude: 59.4886690
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Resource
Resource Type: Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) Resource Subtype: Copper
Element(s): Cu Fe Ti
Importance
Raw material meaning: Little Importance (reg. 18.02.2015)

Resources and production
Activity: Test mining Reserves:
Operating method: Underground mining Historical production:


Operations
From - To Activity Comments
1865 - 1865 Inspection
1905 - 1905 Test mining Company/Institution :N.P. Søgaard
1911 - 1917 Test mining Company/Institution :K.T. Midtgaarden
Sporadic working in 1911, 1916, 1917
1923 - 1923 Test mining Company/Institution :O.O. Sønning

Mineralization
Era: Proterozoic Period: Neoproterozoic
Genesis: Hydrothermal vein Form: Layer
Main texture: Fracture filling Min. distribution: Irregular (scattered)
Main grain size: Very unevenly grained Main alteration:
Strike/Dip: Direction:
Plunge:
Ti-deposit type(s)
Main type: Magmatic Ilm/Mt-ratio:
Sub type: Mt +/- Ilm +/- Ap in mafic intrusion %TiO(Ore):
Titanium province: Deposits outside the Ti - provinces %P2O5(Ore):
Host rock: %MgO(Ilm):
Main Ti mineral: Ilmenite %V2O3(Mt):
ppm U (Rutile):
Stratigraphic classification of host rock
Era: Proterozoic Period: Mesoproterozoic
Province: South Norwegian Basement Province
Geotec.unit: Telemark Supergroup
Tectonic complex:
Igneous complex:
Group: Bandak Group Formation:

Mineralogy
Relationship Mineral Amount
Gangue mineral Epidote Major mineral (>10%)
Gangue mineral Calcite Major mineral (>10%)
Gangue mineral Quartz Major mineral (>10%)
Ore mineral Bornite Major mineral (>10%)
Ore mineral Chalcocite Major mineral (>10%)
Ore mineral Hematite Subordinate mineral (1-10%)
Ore mineral Ilmenite Subordinate mineral (1-10%)

Lithology:
Relationship Rock Origin
Host rock Marble Sedimentary
Original rock :Limestone
Wall rock Greenstone Extrusive
Original rock :Basalt

Structures
Location: Type: Orientation(360 gr.): Relation to min.:
Wall rock Foliation Strike/Dip :273 / 68 Post-mineralisation ;...Effect :Controls

Information(s) in free text format
Free text
Dette skjerpet befinner seg 270 m sørvest for Byrtevatn II (TE 0128). Det ligger nede ved bunnen av en liten dal like øst for kraftlinje. Skjerpet består av en ca. 15 m lang stoll med en vannfylt strosse innerst. Retningen på stollen er rett øst. Tipphaugen anslås til å ha et volum på ca. 200 kbm. Mineraliseringen består av kobberglans og litt bornitt, samt en god del jern-oksider i uregelmessige, noen cm tykke årer av karbonat med epidot og litt kvarts. I følge Nordrum og Van der Wel (1981) er jern-oksidene hematitt og ilmenitt. Årene er tilknyttet en sone med uren marmor, ca 1 m mektig i metabasalt/grønnstein. Denne er parallell foliasjonen som har retning N273Ø/68. Forekomsten ble funnet før 1865. Den ble mutet i 1905 av N.P. Søgaard, av K.T. Midtgaarden i 1911, 1916, 1917 og av O.O. Sønning i 1923.

Bibliography:
From NGU's Reference Archive:
Nordrum, F.S.; van der Wel, D. , 1981
Mineral-, stein- og ertsforekomster innen kartblad Sauda M 1:250 000. (Med fargetrykt kart.) Mineral, rock and ore deposits within the map-sheet Sauda (1:250 000).
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL; KARTBESKRIVELSE;NGU; Skrifter; No.366; 34;1-58 + ka pages
Abstract:
The mineral, rock and ore deposits within map-sheet Sauda are described. The most important types are slate and schist, fluorite, and iron-titanium, copper and zinc deposits. Mica, feldspar, soapstone, asbestos, manganese, molybdenum and lead deposits are also present. No significant mining or quarrying activity is in progress at the present time (1978). Most of the occurrences of slate and schist are located within the lower Caledonian thrust zone. The iron-titanium deposits are of magmatic origin and related to mafic intrusives. The fluorite, copper and molybdenum deposits are associated with various stages of hydrothermal activity in Precambrian time. The Sauda zinc deposits occur in metamorphic rocks and have been affected by hydrothermal activity. The lead mineralizations are confined to regions along the eastern border of the Caledonian mountain chain. They are most likely of the same type as the lead deposits occurring along this border elsewhere in Scandinavia.

Fieldsamples
Sample No. Sample type Miscellanrous
TE0127.01 Dump
Sampler: Terje Bjerkgård
Comment: Uregelmessige aggregater av kobberglans, bornitt og jernoksider i kalsitt, noe epidot og kvarts
No. of registrated element analyses = 1
NB! All analyse values are shown at the end of the printout.:


Analyse Results
from
Deposit Area 3824 - 019 Byrtevatn-I

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#
TE0127.01 Dump 42900 -100 -100 20 40 94.0 180.0
------------------
Sample No. Pt# Pd# As* Cd* Mo* Sb* Bi* Cr* Mn*
TE0127.01 -10.0 -10.0 -100 -10.0 80.00 10 500 20 800
------------------
Sample No. Fe% W* Sr* Na* Mg* Al* P* Ca* Hg*
TE0127.01 2.59 40 110.0 -100 11300 14700 300 76300 -10


The fact sheet was created on 18.10.2021

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