Fact Sheet for <b>Occurence 5037

					Norsk versjon
	THE ORE DATABASE
	Occurence 5037 - 020 Naust
	(Object Id: 305) (Last updated: 12.01.2022)

Location

County:

Trøndelag

Municipality:

Levanger (5037)

Map 1:50000:

Verran (1622-1)

Map 1:250000:

Trondheim

Coordinate system:

EU89-UTM Zone 32

East:

602268 m.

North:

7072219 m.

Longitude:

11.0735730

Latitude:

63.7625940

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Resource

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

Importance

Raw material meaning:

Little Importance (reg. 18.02.2015)

Resources and production

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

Mineralization

Era: Paleozoic Period: Ordovician

Genesis: Volcex Form: Layer

Main texture: Min. distribution: Semi-massive (20-50 % ore minerals)

Main grain size: Main alteration: Chloritisation

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 Major mineral (>10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Pyrite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Host rock Greenstone Extrusive
Original rock :Basalt

Metamorphic facies :Greenschist

Structures

Location: Type: Orientation(360 gr.): Relation to min.:

Host rock Foliation Strike/Dip :315 / 25 Post-mineralisation ;...Effect :Controls

Host rock Fold axis Dir./Plunge :75 / 30 Post-mineralisation ;...Effect :Modifies

Information(s) in free text format

Free text

Naust skjerp består av en liten stoll like over flomålet ca. 100 m vest for gårdene på Bergsøra. Stollen er ca. 10 m lang og går i NNV retning (330 grader). Inne i stollen er det en grønnlig klorittskifer med slirer og linser med karbonat. I østveggen er det en tynn forvitret rustsone, bestående av jernsulfider. Umulig å få tatt prøve her. Bergarten er ellers skifrig og sterkt foldet med foliasjon 330/15. Rustsonen fortsetter ned på strandblotning der den mineraliserte sonen har en mektighet på 1-10 cm. Prøve fra malmsonen herfra (Naust-1) viser at mineraliseringen inneholder mest magnetkis, men også litt pyritt og aksessorisk kobberkis. Foldeakse her viste 075/30 og foliasjon 315/25. Like nedenfor stollen ble det funnet enkelte mineraliserte biter som inneholdt finkornet massiv pyritt med kvarts (prøve Naust-2).

Photo(s) from the Deposit area:

Photo no. 1 showing Stollen"

Photo no. 2 showing Mineralisering"

Bibliography:

From NGU's Reference Archive:

Bøckman, K.L. , 1936

Rapport over Yterøy kisfelt.

;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 35;10 pages

Abstract:

Lok. nr. 30387 - 30389 En befaring er gjort i tida 30.07 - 07.08 1936. Det er gitt en detaljert beskrivelse av: - Beliggenhet og adkomst - Topografi - Generell geologi - Malmgeologi a) Kisdragene på den NØ-lige halvdelen av øya I Stenvik-Bergvin Lotvikan II Ytterøy Kisgruber III Solstad- Falstadåsen- Eines IV Løvåsen- Falstadåsen øvre V Øverst: Falstadåsen VI Laugsandskjerpene b) Skjerp på den SV-lige halvdelen av øya: Kjølsvik, Jørstad, Nordvik og Naust - Historikk - Framtidsmuligheter Elektriske undersøkelse anbefales p.g.a gruvefeltets gunstige beliggenhet og muligheter for å påvise nye forekomster.

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

Falck-Muus, R. 1954: Bergverksdriften ved Ytterøyforekomsten. BV243, rapportarkivet, Direktoratet for Mineralforvaltning.

Fieldsamples

Sample No. Sample type Miscellanrous

NAUST-1 Bedrock

Sampler: T. Bjerkgård/...Stored: Løkken

Comment: Semimassive to massive pyrrhotite with lesser pyrite in quartz, from ore zone at the beach.

No. of registrated element analyses = 1

NAUST-2 Dump

Sampler: T. Bjerkgård/...Stored: Løkken

Comment: Finegrained, massive pyrite with quartz, from 10 cm band in a block.

No. of registrated element analyses = 1

1094 Bedrock

Sampler: Grenne, T.

Comment: Mass. fk./mk. py+/-po,konk. grst./metagråvakke.

No. of registrated element analyses = 1

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

Name of Sample point: Prøvepunkt 1

(Object Id: 653 20,00,01)

Location

County: Trøndelag Municipality: Levanger (5037)

Map 1:50000: Verran (1622-1) Map 1:250000: Trondheim

Coordinate system: EU89-UTM Zone 32

East: 602369 m. North: 7072342 m.

Longitude: 11.0756840 Latitude: 63.7636650

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Resource

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

Element(s): Kis

Fieldsamples

Sample No. Sample type Miscellanrous

1093 Bedrock

Sampler: Grenne, T.

Comment: Mass./semimass. mk. po-py(-cp?)lag i metagråvakke.

No. of registrated element analyses = 1

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

Name of Sample point: Prøvepunkt 2

(Object Id: 654 20,00,02)

Location

County: Trøndelag Municipality: Levanger (5037)

Map 1:50000: Verran (1622-1) Map 1:250000: Trondheim

Coordinate system: EU89-UTM Zone 32

East: 602019 m. North: 7072042 m.

Longitude: 11.0683960 Latitude: 63.7610770

Show on map

Resource

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

Element(s): Kis

Fieldsamples

Sample No. Sample type Miscellanrous

1095 Bedrock

Sampler: Grenne, T.

Comment: Amfibolrik intermed. ba., endel diss. mk. py(-cp).

No. of registrated element analyses = 1

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

Analyse Results

from

Deposit Area 5037 - 020 Naust

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#

NAUST-1 Bedrock 502 14 3 57 171 .8 7.0

NAUST-2 Dump 141 41 5 32 61 .6 16.0

1093 Bedrock 144 130 7 24 116 .6 19.0

1094 Bedrock 131 41 4 20 42 .6 33.0

1095 Bedrock 26 142 12 18 3 .1 5.0

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

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

NAUST-1 -5.0 1.0 13 .2 10 41.00 -1 1 -1

NAUST-2 -5.0 2.0 66 .2 20 28.00 -1 3 -1

1093 4.0 10.0 139 .4 10 13.00 4 2

1094 5.0 1.0 62 .2 6 2.00 5 2

1095 4.0 5.0 2 .2 89 4.00 2 2

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

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

NAUST-1 7.00 6.00 -1.00 -1.00 78 26 478 37.10

NAUST-2 5.00 12.00 -1.00 -1.00 169 52 461 25.90

1093 18.17 24 21 325 25.22

1094 35.56 22 14 247 23.07

1095 .13 41 7 954 8.90

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

Sample No. Th* U* W* Sr* Nb* Ta* La* B* P*

NAUST-1 -1.00 -1.00 -1 1.00 -1.00 150

NAUST-2 -1.00 -1.00 -1 2.00 -1.00 490

1093 1.00 5.00 1 18.0 6.00 3

1094 1.00 5.00 1 10.0 2.00 8

1095 1.00 5.00 1 101.0 11.00 2

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

Sample No. Sc* Ti* Te*

NAUST-1 9.00 2350 -1.00

NAUST-2 16.00 4910 -1.00

1093

1094

1095

Era:	Paleozoic	Period:	Ordovician
Genesis:	Volcex	Form:	Layer
Main texture:		Min. distribution:	Semi-massive (20-50 % 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	Major mineral (>10%)
Ore mineral	Pyrrhotite	Major mineral (>10%)
Ore mineral	Pyrite	Major mineral (>10%)

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

Location:	Type:	Orientation(360 gr.):	Relation to min.:
Host rock	Foliation	Strike/Dip :315 / 25	Post-mineralisation ;...Effect :Controls
Host rock	Fold axis	Dir./Plunge :75 / 30	Post-mineralisation ;...Effect :Modifies

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
NAUST-1	Bedrock	502	14	3	57	171	.8	7.0
NAUST-2	Dump	141	41	5	32	61	.6	16.0
1093	Bedrock	144	130	7	24	116	.6	19.0
1094	Bedrock	131	41	4	20	42	.6	33.0
1095	Bedrock	26	142	12	18	3	.1	5.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sn*	Sb*	Bi*
NAUST-1	-5.0	1.0	13	.2	10	41.00	-1	1	-1
NAUST-2	-5.0	2.0	66	.2	20	28.00	-1	3	-1
1093	4.0	10.0	139	.4	10	13.00		4	2
1094	5.0	1.0	62	.2	6	2.00		5	2
1095	4.0	5.0	2	.2	89	4.00		2	2

Sample No.	Se*	Ga*	Ge*	In*	S%	V*	Cr*	Mn*	Fe%
NAUST-1	7.00	6.00	-1.00	-1.00		78	26	478	37.10
NAUST-2	5.00	12.00	-1.00	-1.00		169	52	461	25.90
1093					18.17	24	21	325	25.22
1094					35.56	22	14	247	23.07
1095					.13	41	7	954	8.90

Sample No.	Sc*	Ti*	Te*
NAUST-1	9.00	2350	-1.00
NAUST-2	16.00	4910	-1.00
1093
1094
1095