Fact Sheet for Deposit Area 833

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 833 - 019
	(Last updated 28.mar.2020)

Name of Deposit Area : Byrtevatn-I

(Object Id : 0833,019,00,00)

Location

County :

Telemark (08)

Municipality :

Tokke (0833)

Map 1:50000:

Dalen (1513-4)

Map 1:250000:

Sauda

Marking point:

Longitude:

7.8446930

Latitude:

59.4886690

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

434570 m.

Y-coord:

6595035 m.

Commodity

	Main Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Sub Type:	Copper
			Element(s):	Cu Fe Ti

Production

Activity:	Test mining	Reserves:
Prod. method:	Underground mining	Production:
Prod. status:	Disused, closed	Volume of dump:	200 m3

Importance

Public: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 05.feb.2003 by Leif Furuhaug)

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

Dating: Method:

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 833 - 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

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

Era:	Proterozoic	Period:	Neoproterozoic
Dating:		Method:
Genesis:	Hydrothermal vein	Form:	Layer
Main texture:	Fracture filling	Min. distribution:	Irregular (scattered)

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):

	Province:	South Norwegian Basement Province
	Geotec.unit:	Telemark Supergroup
	Tectonic complex:
	Igneous complex:

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%)

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

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

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