Fact Sheet for <b>Occurence 1111

					Norsk versjon
	THE ORE DATABASE
	Occurence 1111 - 021 Ørsland
	(Object Id: 5000) (Last updated: 09.02.2005)

Location

County:

Rogaland

Municipality:

Sokndal (1111)

Map 1:50000:

Sokndal (1311-4)

Map 1:250000:

Mandal

Coordinate system:

EU89-UTM Zone 32

East:

343149 m.

North:

6474399 m.

Longitude:

6.3173500

Latitude:

58.3822830

Show on map

Resource

	Resource Type:	Ferrous metals(Fe, Mn, Ti)	Resource Subtype:	Iron-Titanium
			Element(s):	Fe Ti P

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Mineralization

Era: Proterozoic Period: Neoproterozoic

Genesis: Orthomagmatic formation Form:

Main texture: Min. distribution:

Main grain size: 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): 3 - 6

Titanium province: Rogaland anorthosite province %P2O5(Ore): 1 - 3

Host rock: Norite %MgO(Ilm): 1 - 3

Main Ti mineral: Ilmenite %V2O3(Mt):

ppm U (Rutile):

Stratigraphic classification of host rock

Era: Proterozoic Period: Neoproterozoic

Province: South Norwegian Basement Province

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Formation:

Information(s) in free text format

Free text

Oxide-rich modally layered rocks, containing ilmenite, magnetite and apatite. First described by Lenschow (1917), who dismissed it as an ilmenite deposit (sensu strictu) of significance. The cumulate suite is fairly mafic and can be followed along strike towards Bakka for 4-500 m.

Bibliography:

From NGU's Reference Archive:

Larsen, Rune B. , 1996

Distribution of Fe-Ti oxide minerals in the Ørsland, Bakka-Krune and Einebakka area of the Bjerkreim-Sokndal layered norite, Rogaland

;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.96.130;9 pages

Abstract:

Geological mapping in scale 1:5000 in the Sokndal Lobe of the Bjerkreim-Sokndal layered norite intrusion has confirmed that cyclic unit no.IV of the magmatic stratigraphy comprise a high density of Fe-Ti oxide rich layers. The area naturally divides in the Ørsland, Bakka-Krune and Einebakka areas which indi- vidually are shaped as mega-lenses connested to each other via more narrow zones. However, seen together they comprise an open synfom dipping 40o to the west. Zones with a high desity of Fe-Ti oxide rich layers has a patchy distri- bution exhibiting thicknesses from 1 to 120 meters and a limited extent along strike. The Bakka-Krune area has the largest size but the most patchy appearance of Fe-Ti oxides which makes it very difficult to evaluate the total resources. The Einebakka area comprise the largest continuous zone of Fe-Ti oxide rich layers with a documented strike length of 450 meters and thicknesses between 20 and 120 meters.

Era:	Proterozoic	Period:	Neoproterozoic
Genesis:	Orthomagmatic formation	Form:
Main texture:		Min. distribution:

Main type:	Magmatic	Ilm/Mt-ratio:
Sub type:	Mt +/- Ilm +/- Ap in mafic intrusion	%TiO(Ore):	3 - 6
Titanium province:	Rogaland anorthosite province	%P2O5(Ore):	1 - 3
Host rock:	Norite	%MgO(Ilm):	1 - 3
Main Ti mineral:	Ilmenite	%V2O3(Mt):
		ppm U (Rutile):

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