Faktarka for Forekomstområde 1833

					English version
	INDUSTRIMINERALDATABASEN
	Forekomstområde 1833 - 332
	(Sist oppdatert 07.des.2015)

Navn på deposit area : Nakkan

(Objekt Id : 1833,332,00,00)

Lokalisering

Fylke :

Nordland (18)

Kommune :

Rana (1833)

Kart 1:50000:

Mo i Rana (1927-1)

Kart 1:250000:

Mo i Rana

Markeringspunkt:

Lengdegrad:

13.9225680

Breddegrad:

66.3310600

EU89-UTM Zone 33

(Coordinates IS confirmed)

X-koord:

451735 m.

Y-koord:

7357227 m.

Materialtype

Hovedtype:

Talk

Subtype:

Talk

Production

Activity:	Prospektering	Reserves:	1700 thousand tons
Prod. method:	Underjordsdrift	Production:
Prod. status:	Ikke satt i drift	Volume of dump:
		Resource estimat. standard:	Ikke standardisert

Betydning

Offentlig: National Importance (reg. 20.02.2015)

Economical: Meget viktig , (Confirmed 19.feb.2001 by Havard Gautneb)

Products

Element/product Crude ore grade or quality

SOA/TA %

Ownership

Type of ownership Owner Land- and title number

Concessionary (Mining rights) Norwegian Talc Altermark AS

Mineralization

Era: Period:

Dating: Method:

Genesis: Form:

Main texture: Min. distribution:

Main grain size:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province: Caledonides

Geotec.unit: Rødingsfjell Nappe Complex

Tectonic complex: Straumbotn Nappe

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Not defined Talc Major mineral (50-90%)

Not defined Magnesite Major mineral (10-50%)

Not defined Chlorite Subordinate mineral (1-10%)

Not defined Magnetite Accessory mineral (<1%)

Opplysning(er) i fritekstformat

Fri tekst

Nakkan forekomsten ble funnet med helikopter geofysikk, magnetisk modellering og etterfølgende boringer. Avstanden til Altermarkgruve er 3 km og avstand til Store Esjeklumpen er 150 meter. Det er estimert at forekomsten inneholder 6 millioner tonn med talk

Bibliography:

From NGU's Reference Archive:

Karlsen, Tor Arne ; Rian, Edvin ; Olesen, Odleiv , 2000

Overwiew of talc resources in the Altermark talc province, northern Norway, and possible uses of the talc ore

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU Bulletin; No.436;93-102 pages

Abstract:

Active prospecting during the past 10 years has proved that the Altermark area contains much more talc than previously recognised in the Nakkan-Esjeklumpen area, 10 M tonnes or more of talc-carbonate ore are probably present, distributed in ultramafic bodies. The ore, which occurs as one of several layers within compositionally zoned ultramafic lenses dominated by antigorite serpentinites, has the following general mineralogy; talc (45-65%), carbonate (30-50%), chlorite (0-4%) and magnetite (0-3%). Relative to other known similar deposits, the ore is rather coarse-grained, and the minerals tend to be idio- blastic. Several products can be made from the talc-carbonate ore. By applying flotation or other kinds of mineral separation techniques, it is likely that high-quality talc-concentrate could be made in addition to calc-carbonate mixtures. a concentrate of by-product breunnerite would possibly be of ecomonic value.

Søvegjarto, U.; Marker, M.; Graversen, O. , 1988

Mo i Rana. Berggrunnskart; Mo i Rana; 19271; 1:50 000; trykt i farger;

;Norges geologiske undersøkelse;KART

	Type of ownership	Owner	Land- and title number
	Concessionary (Mining rights)	Norwegian Talc Altermark AS

	Era:		Period:
	Dating:		Method:
	Genesis:		Form:
	Main texture:		Min. distribution:

	Province:	Caledonides
	Geotec.unit:	Rødingsfjell Nappe Complex
	Tectonic complex:	Straumbotn Nappe
	Igneous complex:

Relationship	Mineral	Amount
Not defined	Talc	Major mineral (50-90%)
Not defined	Magnesite	Major mineral (10-50%)
Not defined	Chlorite	Subordinate mineral (1-10%)
Not defined	Magnetite	Accessory mineral (<1%)