Faktarka for Forekomstområde 1644

					English version
	MALMDATABASEN
	Forekomstområde 1644 - 022
	(Sist oppdatert 07.nov.2023)

Navn på deposit area : Kårslått grube

(Objekt Id : 1644,022,00,00)

Lokalisering

Fylke :

Sør-Trøndelag (16)

Kommune :

Holtålen (1644)

Kart 1:50000:

Ålen (1720-4)

Kart 1:250000:

Røros

Markeringspunkt:

Lengdegrad:

11.3513300

Breddegrad:

62.8662550

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-koord:

619625 m.

Y-koord:

6972872 m.

Materialtype

	Hovedtype:	Basemetaller (Cu,Zn,Pb,Fe sulfider,As,Sb,Bi,Sn)	Subtype:	Kobber
			Element(s):	Cu Co

Production

Activity:	Gruvedrift	Reserves:
Prod. method:	Underjordsdrift	Production:
Prod. status:	Nedlagt	Volume of dump:	150 m3

Betydning

Offentlig: Little Importance (reg. 18.02.2015)

Economical: Lite viktig

Operations

From - To Activity Comments

- 1887 Test mining Company/Institution :Røros Kobberverk

1887 - 1887 Test mining Company/Institution :Trondhjem-Os Graphit-metal A/B

1887 - 1916 Regular production Company/Institution :O.K. Jensaas

1917 - 1917 Regular production Company/Institution :Røros Kobberverk

Mineralization

Era: Paleozoic Period: Ordovician

Dating: Method:

Genesis: Vulkeks Form: Linse

Main texture: Strukturløs Min. distribution: Semi-massiv

Main grain size: Middelskornet (1-3 mm) Main alteration: Klorittisering

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Paleozoic Period: Ordovician

Province: Caledonides

Geotec.unit: Trondheim Nappe Complex

Tectonic complex: Meråker Nappe

Igneous complex:

Group: Fundsjø Formation: Hersjø

Mineralogy

Relationship Mineral Amount

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Chlorite Major mineral (>10%)

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Biotite Subordinate mineral (1-10%)

Gangue mineral Ankerite Subordinate mineral (1-10%)

Gangue mineral Garnet Subordinate mineral (1-10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Ore mineral Pyrite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Wall rock Glimmerskiter/fyllitt Sedimentary
Original rock :Greywacke

Metamorphic facies :Amphibolite

Wall rock Amfibolitt Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Structures

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

Wall rock Foliation Strike/Dip :140 / 50 Post-mineralisation ;...Effect :Modifies

Wall rock Foliation Strike/Dip :148 / 40 Post-mineralisation ;...Effect :Modifies

Wall rock Schistosity Strike/Dip :175 / 45 Post-mineralisation ;...Effect :Modifies

Opplysning(er) i fritekstformat

Fri tekst

Kårslått består av tre områder med synker over en lengde på ca. 250 m i NV-SØ retning. Den første driften var antakelig av Røros Kobberverk inntil 1887. Selskapet Trondhjem-Os Graphit-Metal A/B drev forsøksdrift i 1887, deretter ble hele feltet overtatt og dels funnet av O.K. Jensaas. i løpet av hans driftstid inntil 1916 ble det tatt ut 6-7 tonn kobbermalm med ca. 7 % Cu. I 1917 drev Røros Kobberverk forsøksdrift og tok ut ytterligere 2-3 tonn malm.

Bilde(r) fra forekomstområdet:

Photo no. 1 showing Kårslått gruve"

Bibliography:

From NGU's Reference Archive:

Aasgaard, Gunnar , 1927

Gruber og skjerp i kisdraget Øvre Guldal-Tydal.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.129;1-196 pages

Abstract:

The occurences described in this paper form a connection between th mining districts around Røros to the south and those around Meråker to the north. The occurences lie in mountain regions partly above the forest line. The list on page 12 contains the names of all known occurrences of whatever size within the district considered. Pl. I is a geological outline map of the district, compiled from maps in the Norwegian Geological Survey. In a geological summary on pages 18-27 it is shown that no pyrite occurrences of economic importance so far have been found in an eastern zone along the Swedish boundary where the rocks consist of hard schist with sparagmites, and igneous rocks. Neither have such occurrences been found in a zone of "Stuedalsskifer" and an other zone of "Gulaskifer" towards west, both indicated on the map. The occurrences of pyrite are chiefly found in connection with fine grained, light green or gravish, partly feldspar bearing schist and in connection with green schists, mostly fine grained hornblende schists. All these zones of schist gnereally strike north and dip west. The pyrite bearing schist lie on both sildes of a large zone of igneous rocks extending from Kjølifjell in the south over Hyllingen and Melshogna to Fangen in the Meråker district in the north.

Fieldsamples

Sample No. Sample type Miscellanrous

ST0213.03 Dump

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

Kommentar :cpy+po malm, middelskornet, strenger/aggregater i kvarts+amfibol linser/+årer i grønnskifer.

No. of registrated element analyses = 1

ST0213.04 Dump

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

Kommentar :po-cpy min, finkornet, diss./strenger i og langs kvarts+biotitt åre.

No. of registrated element analyses = 1

399762 Dump

Sampler :MINDEX ASA

No. of registrated element analyses = 1

399763 Dump

Sampler :MINDEX ASA

No. of registrated element analyses = 1

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

Navn på locality : Kårslått, Synk nr. 4

(Objekt Id : 1644,022,01,00)

Lokalisering

Fylke : Sør-Trøndelag (16) Kommune : Holtålen (1644)

Kart 1:50000: Ålen (1720-4) Kart 1:250000: Røros

Markeringspunkt: Lengdegrad: 11.3514340 Breddegrad: 62.8657710

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-koord: 619633 m. Y-koord: 6972819 m.

Materialtype

Hovedtype: Basemetaller (Cu,Zn,Pb,Fe sulfider,As,Sb,Bi,Sn) Subtype: Kobber

Element(s): Cu

Production

Activity: Prøvedrift Reserves:

Prod. method: Underjordsdrift Production:

Prod. status: Volume of dump: 20 m3

Mineralogy

Relationship Mineral Amount

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Chlorite Major mineral (>10%)

Gangue mineral Garnet Subordinate mineral (1-10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Wall rock Glimmerskifer/fyllitt Sedimentary
Original rock :Greywacke

Metamorphic facies :Amphibolite

Wall rock Amfibolitt Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Navn på locality : Kårslått, Synk nr.3

(Objekt Id : 1644,022,02,00)

Lokalisering

Fylke : Sør-Trøndelag (16) Kommune : Holtålen (1644)

Kart 1:50000: Ålen (1720-4) Kart 1:250000: Røros

Markeringspunkt: Lengdegrad: 11.3466250 Breddegrad: 62.8667940

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-koord: 619384 m. Y-koord: 6972924 m.

Materialtype

Hovedtype: Basemetaller (Cu,Zn,Pb,Fe sulfider,As,Sb,Bi,Sn) Subtype: Kobber

Element(s): Cu

Production

Activity: Prøvedrift Reserves:

Prod. method: Dag- og underjordsdrift Production:

Prod. status: Nedlagt Volume of dump: 60 m3

Bilde(r) fra forekomstområdet:

Photo no. 1 showing Kårslått II"

Fieldsamples

Sample No. Sample type Miscellanrous

ST0213.05 Dump

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

Kommentar :po-cpy malm, fin-middelskornet, semi-massiv i granatførende fyllitt.

No. of registrated element analyses = 1

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

Navn på locality : Kårslått, Synk nr. 5

(Objekt Id : 1644,022,03,00)

Lokalisering

Fylke : Sør-Trøndelag (16) Kommune : Holtålen (1644)

Kart 1:50000: Ålen (1720-4) Kart 1:250000: Røros

Markeringspunkt: Lengdegrad: 11.3548400 Breddegrad: 62.8648990

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-koord: 619809 m. Y-koord: 6972728 m.

Materialtype

Hovedtype: Basemetaller (Cu,Zn,Pb,Fe sulfider,As,Sb,Bi,Sn) Subtype: Kobber

Element(s): Cu

Production

Activity: Prøvedrift Reserves:

Prod. method: Underjordsdrift Production:

Prod. status: Nedlagt Volume of dump: 100 m3

Mineralogy

Relationship Mineral Amount

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Garnet Subordinate mineral (1-10%)

Ore mineral Chalcopyrite Major mineral (>10%)

Ore mineral Pyrrhotite Major mineral (>10%)

Lithology:

Relationship Rock Origin

Wall rock Glimmerskifer/fyllitt Sedimentary
Original rock :Greywacke

Metamorphic facies :Amphibolite

Structures

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

Wall rock Schistosity Strike/Dip :140 / 55 Post-mineralisation ;...Effect :Modifies

Wall rock Mineral lineation Dir./Plunge :230 / 50 Post-mineralisation ;...Effect :Modifies

Bilde(r) fra forekomstområdet:

Photo no. 1 showing Kårslått III"

Fieldsamples

Sample No. Sample type Miscellanrous

ST0213.01 Dump

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

Kommentar :po+cpy min., semi-massiv, kvarts+amfibol+granat matriks.

No. of registrated element analyses = 1

ST0213.02 Dump

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

Kommentar :cpy årer og strenger i fyllittisk skifer med amfibolnåler.

No. of registrated element analyses = 1

399760 Dump

Sampler :MINDEX ASA

No. of registrated element analyses = 1

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

Navn på locality : Svenuken I

(Objekt Id : 1644,022,04,00)

Lokalisering

Fylke : Sør-Trøndelag (16) Kommune : Holtålen (1644)

Kart 1:50000: Ålen (1720-4) Kart 1:250000: Røros

Markeringspunkt: Lengdegrad: 11.3346550 Breddegrad: 62.8669330

EU89-UTM Zone 32 (Coordinates IS confirmed)

X-koord: 618774 m. Y-koord: 6972917 m.

Materialtype

Hovedtype: Basemetaller (Cu,Zn,Pb,Fe sulfider,As,Sb,Bi,Sn) Subtype: Kobber

Element(s): Cu

Production

Activity: Røsking Reserves:

Prod. method: Production:

Prod. status: Volume of dump: 2 m3

Mineralogy

Relationship Mineral Amount

Gangue mineral Amphibole Major mineral (>10%)

Gangue mineral Quartz Major mineral (>10%)

Gangue mineral Ankerite Subordinate mineral (1-10%)

Ore mineral Pyrite Major mineral (>10%)

Ore mineral Chalcopyrite Subordinate mineral (1-10%)

Lithology:

Relationship Rock Origin

Wall rock Garbenskifer Sedimentary
Original rock :Greywacke

Metamorphic facies :Amphibolite

Wall rock Amfibolitt Extrusive
Original rock :Basalt

Metamorphic facies :Amphibolite

Structures

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

Wall rock Foliation Strike/Dip :197 / 55 Post-mineralisation ;...Effect :None

Bilde(r) fra forekomstområdet:

Photo no. 1 showing Svenuken I"

Fieldsamples

Sample No. Sample type Miscellanrous

JS97007 Dump

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

Kommentar :py diss. og aggregater i bånd med grovkornet amfibol+kvarts+ankeritt i garbenskifer med grovkornete amfibolnåler.

No. of registrated element analyses = 1

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

Analyse Results

from

Forekomstområde 1644 - 022 Kårslått grube

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#

JS97007 Dump 7166 65 4 21 4 6.6 547.0

ST0213.01 Dump 15137 155 5 1289 48 7.5 199.0

ST0213.02 Dump 26181 326 3 542 20 6.5 636.0

ST0213.03 Dump 58741 289 -3 158 38 15.3 994.0

ST0213.04 Dump 6694 25 5 36 17 1.5 180.0

ST0213.05 Dump 13375 84 5 161 45 2.7 21.0

399760 Dump 39000 550 63 465 22 10.0 486.0

399762 Dump 37000 210 67 114 29 7.6 293.0

399763 Dump 204800 644 288 200 33 43.3 244.0

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

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

JS97007 1.0 1.0 6 1.0 6 3.00 4 4 .62

ST0213.01 -1.0 -1.0 6 1.8 9 32.00 -3 5 21.51

ST0213.02 3.0 -1.0 4 4.3 12 11.00 6 -3 9.19

ST0213.03 2.0 -1.0 -2 6.3 12 1.00 19 -3 10.58

ST0213.04 3.0 1.0 -2 .5 33 -1.00 3 -3 2.33

ST0213.05 3.0 -1.0 -2 -.2 36 -1.00 -3 4 14.97

399760 149 8.4 6 18.00 3 6

399762 131 1.8 23 5.00 3 3

399763 80 14.0 3 18.00 3 3

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

Sample No. V* Cr* Mn* Fe% Th* U* W* Sr* La*

JS97007 41 6 467 8.06 7.00 -8.00 -2 10.0 22.00

ST0213.01 40 1 832 41.58 6.00 -8.00 27 12.0 6.00

ST0213.02 165 7 479 29.88 8.00 -8.00 16 6.0 12.00

ST0213.03 112 18 336 24.52 7.00 -8.00 -2 3.0 10.00

ST0213.04 29 17 96 4.88 -2.00 -8.00 -2 3.0 3.00

ST0213.05 92 39 211 24.47 4.00 -8.00 -2 7.0 6.00

399760 112 53 674 10.00 18.0 9.00

399762 152 142 526 19.10 8.0 19.00

399763 9 53 109 10.00 3.0 0.50

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

Sample No. B* Ti*

JS97007 -3

ST0213.01 4

ST0213.02 -3

ST0213.03 -3

ST0213.04 -3

ST0213.05 -3

399760 180

399762 360

399763 30

From - To	Activity	Comments
- 1887	Test mining	Company/Institution :Røros Kobberverk
1887 - 1887	Test mining	Company/Institution :Trondhjem-Os Graphit-metal A/B
1887 - 1916	Regular production	Company/Institution :O.K. Jensaas
1917 - 1917	Regular production	Company/Institution :Røros Kobberverk

Era:	Paleozoic	Period:	Ordovician
Dating:		Method:
Genesis:	Vulkeks	Form:	Linse
Main texture:	Strukturløs	Min. distribution:	Semi-massiv

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

Relationship	Mineral	Amount
Gangue mineral	Quartz	Major mineral (>10%)
Gangue mineral	Chlorite	Major mineral (>10%)
Gangue mineral	Amphibole	Major mineral (>10%)
Gangue mineral	Biotite	Subordinate mineral (1-10%)
Gangue mineral	Ankerite	Subordinate mineral (1-10%)
Gangue mineral	Garnet	Subordinate mineral (1-10%)
Ore mineral	Chalcopyrite	Major mineral (>10%)
Ore mineral	Pyrrhotite	Major mineral (>10%)
Ore mineral	Pyrite	Subordinate mineral (1-10%)

Relationship	Rock	Origin
Wall rock	Glimmerskiter/fyllitt	Sedimentary Original rock :Greywacke
		Metamorphic facies :Amphibolite
Wall rock	Amfibolitt	Extrusive Original rock :Basalt
		Metamorphic facies :Amphibolite

Location:	Type:	Orientation(360 gr.):	Relation to min.:
Wall rock	Foliation	Strike/Dip :140 / 50	Post-mineralisation ;...Effect :Modifies
Wall rock	Foliation	Strike/Dip :148 / 40	Post-mineralisation ;...Effect :Modifies
Wall rock	Schistosity	Strike/Dip :175 / 45	Post-mineralisation ;...Effect :Modifies

Activity:	Prøvedrift	Reserves:
Prod. method:	Underjordsdrift	Production:
Prod. status:		Volume of dump:	20 m3

Activity:	Røsking	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:	2 m3

Sample No.	Sample Type	Cu*	Zn*	Pb*	Co*	Ni*	Ag*	Au#
JS97007	Dump	7166	65	4	21	4	6.6	547.0
ST0213.01	Dump	15137	155	5	1289	48	7.5	199.0
ST0213.02	Dump	26181	326	3	542	20	6.5	636.0
ST0213.03	Dump	58741	289	-3	158	38	15.3	994.0
ST0213.04	Dump	6694	25	5	36	17	1.5	180.0
ST0213.05	Dump	13375	84	5	161	45	2.7	21.0
399760	Dump	39000	550	63	465	22	10.0	486.0
399762	Dump	37000	210	67	114	29	7.6	293.0
399763	Dump	204800	644	288	200	33	43.3	244.0

Sample No.	Pt#	Pd#	As*	Cd*	Ba*	Mo*	Sb*	Bi*	S%
JS97007	1.0	1.0	6	1.0	6	3.00	4	4	.62
ST0213.01	-1.0	-1.0	6	1.8	9	32.00	-3	5	21.51
ST0213.02	3.0	-1.0	4	4.3	12	11.00	6	-3	9.19
ST0213.03	2.0	-1.0	-2	6.3	12	1.00	19	-3	10.58
ST0213.04	3.0	1.0	-2	.5	33	-1.00	3	-3	2.33
ST0213.05	3.0	-1.0	-2	-.2	36	-1.00	-3	4	14.97
399760			149	8.4	6	18.00	3	6
399762			131	1.8	23	5.00	3	3
399763			80	14.0	3	18.00	3	3

Sample No.	V*	Cr*	Mn*	Fe%	Th*	U*	W*	Sr*	La*
JS97007	41	6	467	8.06	7.00	-8.00	-2	10.0	22.00
ST0213.01	40	1	832	41.58	6.00	-8.00	27	12.0	6.00
ST0213.02	165	7	479	29.88	8.00	-8.00	16	6.0	12.00
ST0213.03	112	18	336	24.52	7.00	-8.00	-2	3.0	10.00
ST0213.04	29	17	96	4.88	-2.00	-8.00	-2	3.0	3.00
ST0213.05	92	39	211	24.47	4.00	-8.00	-2	7.0	6.00
399760	112	53	674	10.00				18.0	9.00
399762	152	142	526	19.10				8.0	19.00
399763	9	53	109	10.00				3.0	0.50