Norsk versjon
	THE ORE DATABASE
	Occurence 4028 - 042 Heiskar
	(Object Id: 5483) (Last updated: 28.03.2020)

Operations

	From - To	Activity	Comments
	1889 - 1889	Test mining
	2006 - 2006	Sampling	Company/Institution :NGU

Mineralization

	Era:	Proterozoic	Period:
	Genesis:	Metamorphic formation	Form:	Lens
	Main texture:	Fracture filling	Min. distribution:	Irregular (scattered)

Main grain size:

Fine grained (< 1 mm)

Main alteration:

	Strike/Dip:	76 / 90	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	Carbonate	Major mineral (>10%)
	Gangue mineral	Quartz	Major mineral (>10%)
	Ore mineral	Chalcopyrite	Major mineral (>10%)
	Ore mineral	Bornite	Accessory mineral (<1%)

Lithology:

	Relationship	Rock	Origin
	Wall rock	Greenstone	Extrusive Original rock :Basalt
			Metamorphic facies :Greenschist

Information(s) in free text format

Free text

En rekke arbeider er utført langs en ca. 250 m lang kvartsgang som er orientert VSV-ØNØ og finnes på toppen av åsen nord for Dalane gruver. En rekke grøfter og grunne skjæringer er anlagt. Koordinatene til forekomsten er gitt til en over 10 m dyp sjakt. Dagskjæringer fortsetter i begge retninger fra denne. I den vestlige delen av området er det også flere tverrgående grunne grøfter. Vertsbergart for kvartsgangen er finkornet, grågrønn grønnstein. Foliasjonen i denne er i den østlige delen av området 72º/85º. Kvartsgangen er subkonkordant til denne retningen og den er i sjaktveggen normalt 10-20 cm bred, men kan være vel 30 cm. Forekomsten har ingen økonomisk interesse.

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
	TE0097.02	Dump	Sampler: J.S. Sandstad/...Stored: L¿kken/...Size(kg): 2 Comment: Chalcopyrite aggregates/veinlets in coarse-grained quartz No. of registrated element analyses = 1

NB! All analyse values are shown at the end of the printout.:

Name of Locality: Heiskar NØ

(Object Id: 17802 42,01,00)

Location

County:

Telemark

Municipality:

Kviteseid (4028)

Map 1:50000:

Bandak (1513-1)

Map 1:250000:

Skien

Coordinate system:

EU89-UTM Zone 32

East:

463493 m.

North:

6591926 m.

Longitude:

8.3558870

Latitude:

59.4642580

Show on map

Resource

	Resource Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Resource Subtype:	Copper
			Element(s):	Cu

Resources and production

	Activity:	Pitting	Reserves:
	Operating method:		Historical production:

Mineralogy

	Relationship	Mineral	Amount
	Gangue mineral	Quartz	Major mineral (>10%)
	Gangue mineral	Carbonate	Major mineral (>10%)
	Ore mineral	Chalcopyrite	Major mineral (>10%)

Lithology:

	Relationship	Rock	Origin
	Wall rock	Greenstone	Extrusive Original rock :Basalt
			Metamorphic facies :Greenschist

Structures

	Location:	Type:	Orientation(360 gr.):	Relation to min.:
	Wall rock	Foliation	Strike/Dip :72 / 85	Syn-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Dette er den østligste del av skjæringa. Den overlagres her delvis av en nylig anlagt traktorsti i forbindelse med tømmerhogst. Middelskornet kobberkis+bornitt danner aggregater i den karbonatførende kvartsgangen som er minst 25 cm bred i dette området.

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
	TE0097.01	Dump	Sampler: J.S. Sandstad/...Stored: L¿kken/...Size(kg): 2 Comment: Chalcopyrite+bornite aggregates in carbonate-bearing quartz No. of registrated element analyses = 1

NB! All analyse values are shown at the end of the printout.:

Name of Locality: stoll

(Object Id: 39607 42,02,00)

Location

County:

Telemark

Municipality:

Kviteseid (4028)

Map 1:50000:

Bandak (1513-1)

Map 1:250000:

Skien

County:

(Unavailable)

Resource

	Resource Type:	Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn)	Resource Subtype:	Copper
			Element(s):	Cu

Resources and production

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

---

Analyse Results

from

Deposit Area 4028 - 042 Heiskar

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#
TE0097.01	Dump	117320	-100	-100	-10	10	8.0	40.0
TE0097.02	Dump	28310	-100	-100	10	10	13.0	40.0

------------------

Sample No.	As*	Cd*	Mo*	Sb*	Bi*	Cr*	Mn*	Fe%	W*
TE0097.01	-100	-10.0	30.00	30	-100	-10	1400	11.12	-10
TE0097.02	-100	-10.0	70.00	-10	200	-10	1000	3.76	-10

------------------

Sample No.	Sr*	P*	Ca*
TE0097.01	60.0	0	2
TE0097.02	30.0	0	1

---

The fact sheet was created on 23.04.2024

Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no

Copyright © 2024 Geological Survey of Norway