Fact Sheet for Deposit Area 1636

					Norsk versjon
	THE ORE DATABASE
	Deposit Area 1636 - 026
	(Last updated 13.apr.2020)

Name of Deposit Area : Halsetåsen

(Object Id : 1636,026,00,00)

Location

County :

Sør-Trøndelag (16)

Municipality :

Meldal (1636)

Map 1:50000:

Løkken (1521-3)

Map 1:250000:

Trondheim

Marking point:

Longitude:

9.5757790

Latitude:

63.1143580

EU89-UTM Zone 32

X-coord:

529050 m.

Y-coord:

6998460 m.

Commodity

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

Production

Activity:	Pitting	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:

Importance

Public: Not Assessed (reg. 18.02.2015)

Economical: Not classified/evaluated

Mineralization

Era: Paleozoic Period: Ordovician

Dating: Method:

Genesis: Volcex Form: Layer

Main texture: Banded Min. distribution: Massive (>50 % ore minerals)

Main grain size: Fine grained (< 1 mm) Main alteration:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period: Ordovician

Province: Caledonides

Geotec.unit: Trondheim Nappe Complex

Tectonic complex: Støren Nappe

Igneous complex:

Group: Støren Group Formation:

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Chlorite Subordinate mineral (1-10%)

Ore mineral Pyrite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Wall rock Jasper Sedimentary
Original rock :Exhalite

Metamorphic facies :Greenschist

Information(s) in free text format

Free text

Flere horisonter med assosiert vasskis og jaspis finnes i Svinsåsmarka i den sørvestlige delen Løkken-området. De ligger i den øvre sekvensen med grønnstein og kan følges i flere kilometers lengde (Grenne & Slack 2003). En av disse er Halsetåsen som er et større jaspisbrudd i den østre delen av Halsetåsen. Jaspis ble tidligere tatt ut derfra som tilsetning i asfalt. Vasskishorisonten er ikke blottet lengre, men en større blokk med båndet vasskis ble prøvetatt. Den består av veksling mellom bånd og laminer med svært finkornet pyritt, kvarts og kloritt-stilpnomelan.

Bibliography:

References not to be found in NGU's Reference Archive.:

Sand, K. 1982. Feltarbeidsrapport 1982 Løkken. BV 1822.

Grenne, T. & Slack, J.F. 2003. bedded jaspers of the Ordovician Løkken ophiolite, Norway: seafloor deposition and diagenetic maturation of hydrothermal plume-derived silica-iron gels. Mineralium Deposita 38, 625-639.

Fieldsamples

Sample No. Sample type Miscellanrous

JS-L1905 Dump

Sampler :J.S. Sandstad/...Stored :Løkken/...Size(kg) :2

Comment :Massive pyrite ore, very fine grained 'vasskis'

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 1636 - 026 Halsetåsen

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#

JS-L1905 Dump 724 472 687 20 194 38.9 61.0

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

Sample No. Pt# Pd# As* Cd* Ba* Mo* Sn* Sb* Bi*

JS-L1905 10.0 9.0 841 2.2 -10 56.40 1 74 0

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

Sample No. Se* Ga* Ge* In* S% V* Cr* Mn* Fe%

JS-L1905 11.00 11.25 0.43 0.13 10.00 324 55 481 30.00

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

Sample No. Th* U* W* Rb* Sr* Y* Zr* Nb* Ta*

JS-L1905 4.43 13.60 9 0.1 1.8 29.8 58 3.60 0.27

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

Sample No. Cs* La* Ce* Li* Be* Na* Mg* Al* P*

JS-L1905 0.05 20.60 36.90 2 0 0 1 3 1000

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

Sample No. K * Ca* Sc* Ti* Te* Hf* Re* Tl*

JS-L1905 -0 0 7.50 0 0.59 1.50 38 1

Era:	Paleozoic	Period:	Ordovician
Dating:		Method:
Genesis:	Volcex	Form:	Layer
Main texture:	Banded	Min. distribution:	Massive (>50 % ore minerals)

	Province:	Caledonides
	Geotec.unit:	Trondheim Nappe Complex
	Tectonic complex:	Støren Nappe
	Igneous complex:

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Chlorite	Subordinate mineral (1-10%)
Ore mineral	Pyrite	Major mineral (>10%)

Relationship	Rock	Origin
Wall rock	Jasper	Sedimentary Original rock :Exhalite
		Metamorphic facies :Greenschist

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JS-L1905	Dump	724	472	687	20	194	38.9	61.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
JS-L1905	10.0	9.0	841	2.2	-10	56.40	1	74	0

Sample No.	Se*	Ga*	Ge*	In*	S%	V*	Cr*	Mn*	Fe%
JS-L1905	11.00	11.25	0.43	0.13	10.00	324	55	481	30.00

Sample No.	Th*	U*	W*	Rb*	Sr*	Y*	Zr*	Nb*	Ta*
JS-L1905	4.43	13.60	9	0.1	1.8	29.8	58	3.60	0.27

Sample No.	Cs*	La*	Ce*	Li*	Be*	Na*	Mg*	Al*	P*
JS-L1905	0.05	20.60	36.90	2	0	0	1	3	1000

Sample No.	K *	Ca*	Sc*	Ti*	Te*	Hf*	Re*	Tl*
JS-L1905	-0	0	7.50	0	0.59	1.50	38	1